Source for file common.php
Documentation is available at common.php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
* Contains the DB_common base class
* LICENSE: This source file is subject to version 3.0 of the PHP license
* that is available through the world-wide-web at the following URI:
* http://www.php.net/license/3_0.txt. If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
* @author Stig Bakken <ssb@php.net>
* @author Tomas V.V. Cox <cox@idecnet.com>
* @author Daniel Convissor <danielc@php.net>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version CVS: $Id: common.php,v 1.143 2007/09/21 13:40:41 aharvey Exp $
* @link http://pear.php.net/package/DB
* Obtain the PEAR class so it can be extended from
require_once DB_PEAR_PATH.
'PEAR.php';
* DB_common is the base class from which each database driver class extends
* All common methods are declared here. If a given DBMS driver contains
* a particular method, that method will overload the one here.
* @author Stig Bakken <ssb@php.net>
* @author Tomas V.V. Cox <cox@idecnet.com>
* @author Daniel Convissor <danielc@php.net>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version Release: 1.7.13
* @link http://pear.php.net/package/DB
* The current default fetch mode
* The name of the class into which results should be fetched when
* DB_FETCHMODE_OBJECT is in effect
* Was a connection present when the object was serialized()?
* @see DB_common::__sleep(), DB_common::__wake()
* The most recently executed query
* Run-time configuration options
* The 'optimize' option has been deprecated. Use the 'portability'
* @see DB_common::setOption()
'result_buffering' =>
500,
'seqname_format' =>
'%s_seq',
'portability' =>
DB_PORTABILITY_NONE,
'optimize' =>
'performance', // Deprecated. Use 'portability'.
* The parameters from the most recently executed query
* @since Property available since Release 1.7.0
* The elements from each prepared statement
* The data types of the various elements in each prepared statement
* Flag indicating that the last query was a manipulation query.
* Flag indicating that the next query <em>must</em> be a manipulation
* This constructor calls <kbd>$this->PEAR('DB_Error')</kbd>
* Automatically indicates which properties should be saved
* when PHP's serialize() function is called
* @return array the array of properties names that should be saved
// Don't disconnect(), people use serialize() for many reasons
if (isset
($this->autocommit)) {
return array('autocommit',
'fetchmode_object_class',
'fetchmode_object_class',
* Automatically reconnects to the database when PHP's unserialize()
* The reconnection attempt is only performed if the object was connected
* at the time PHP's serialize() function was run.
$this->connect($this->dsn, $this->options);
* Automatic string conversion for PHP 5
* @return string a string describing the current PEAR DB object
* @since Method available since Release 1.7.0
$info .=
': (phptype=' .
$this->phptype .
', dbsyntax=' .
$this->dbsyntax .
* DEPRECATED: String conversion method
* @return string a string describing the current PEAR DB object
* @deprecated Method deprecated in Release 1.7.0
* DEPRECATED: Quotes a string so it can be safely used within string
* @param string $string the string to be quoted
* @return string the quoted string
* @see DB_common::quoteSmart(), DB_common::escapeSimple()
* @deprecated Method deprecated some time before Release 1.2
$string =
$this->quote($string);
return substr($string, 1, -
1);
* DEPRECATED: Quotes a string so it can be safely used in a query
* @param string $string the string to quote
* @return string the quoted string or the string <samp>NULL</samp>
* if the value submitted is <kbd>null</kbd>.
* @see DB_common::quoteSmart(), DB_common::escapeSimple()
* @deprecated Deprecated in release 1.6.0
function quote($string =
null)
return ($string ===
null) ?
'NULL'
* Quotes a string so it can be safely used as a table or column name
* Delimiting style depends on which database driver is being used.
* NOTE: just because you CAN use delimited identifiers doesn't mean
* you SHOULD use them. In general, they end up causing way more
* problems than they solve.
* Portability is broken by using the following characters inside
* + backtick (<kbd>`</kbd>) -- due to MySQL
* + double quote (<kbd>"</kbd>) -- due to Oracle
* + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access
* Delimited identifiers are known to generally work correctly under
* + sybase (must execute <kbd>set quoted_identifier on</kbd> sometime
* InterBase doesn't seem to be able to use delimited identifiers
* via PHP 4. They work fine under PHP 5.
* @param string $str the identifier name to be quoted
* @return string the quoted identifier
* @since Method available since Release 1.6.0
* Formats input so it can be safely used in a query
* The output depends on the PHP data type of input and the database
* @param mixed $in the data to be formatted
* @return mixed the formatted data. The format depends on the input's
* <kbd>input</kbd> -> <samp>returns</samp>
* <kbd>null</kbd> -> the string <samp>NULL</samp>
* <kbd>integer</kbd> or <kbd>double</kbd> -> the unquoted number
* <kbd>bool</kbd> -> output depends on the driver in use
* Most drivers return integers: <samp>1</samp> if
* <kbd>true</kbd> or <samp>0</samp> if
* Some return strings: <samp>TRUE</samp> if
* <kbd>true</kbd> or <samp>FALSE</samp> if
* Finally one returns strings: <samp>T</samp> if
* <kbd>true</kbd> or <samp>F</samp> if
* <kbd>false</kbd>. Here is a list of each DBMS,
* the values returned and the suggested column type:
* <kbd>dbase</kbd> -> <samp>T/F</samp>
* <kbd>fbase</kbd> -> <samp>TRUE/FALSE</samp>
* <kbd>ibase</kbd> -> <samp>1/0</samp>
* (<kbd>SMALLINT</kbd>) [1]
* <kbd>ifx</kbd> -> <samp>1/0</samp>
* (<kbd>SMALLINT</kbd>) [1]
* <kbd>msql</kbd> -> <samp>1/0</samp>
* <kbd>mssql</kbd> -> <samp>1/0</samp>
* <kbd>mysql</kbd> -> <samp>1/0</samp>
* (<kbd>TINYINT(1)</kbd>)
* <kbd>mysqli</kbd> -> <samp>1/0</samp>
* (<kbd>TINYINT(1)</kbd>)
* <kbd>oci8</kbd> -> <samp>1/0</samp>
* <kbd>odbc</kbd> -> <samp>1/0</samp>
* (<kbd>SMALLINT</kbd>) [1]
* <kbd>pgsql</kbd> -> <samp>TRUE/FALSE</samp>
* <kbd>sqlite</kbd> -> <samp>1/0</samp>
* <kbd>sybase</kbd> -> <samp>1/0</samp>
* (<kbd>TINYINT(1)</kbd>)
* [1] Accommodate the lowest common denominator because not all
* versions of have <kbd>BOOLEAN</kbd>.
* other (including strings and numeric strings) ->
* the data with single quotes escaped by preceeding
* single quotes, backslashes are escaped by preceeding
* backslashes, then the whole string is encapsulated
* @see DB_common::escapeSimple()
* @since Method available since Release 1.6.0
if ($this->dbsyntax ==
'access'
* Formats a boolean value for use within a query in a locale-independent
* @param boolean the boolean value to be quoted.
* @return string the quoted string.
* @see DB_common::quoteSmart()
* @since Method available since release 1.7.8.
return $boolean ?
'1' :
'0';
* Formats a float value for use within a query in a locale-independent
* @param float the float value to be quoted.
* @return string the quoted string.
* @see DB_common::quoteSmart()
* @since Method available since release 1.7.8.
* Escapes a string according to the current DBMS's standards
* In SQLite, this makes things safe for inserts/updates, but may
* cause problems when performing text comparisons against columns
* containing binary data. See the
* {@link http://php.net/sqlite_escape_string PHP manual} for more info.
* @param string $str the string to be escaped
* @return string the escaped string
* @see DB_common::quoteSmart()
* @since Method available since Release 1.6.0
* Tells whether the present driver supports a given feature
* @param string $feature the feature you're curious about
* @return bool whether this driver supports $feature
return $this->features[$feature];
* Sets the fetch mode that should be used by default for query results
* @param integer $fetchmode DB_FETCHMODE_ORDERED, DB_FETCHMODE_ASSOC
* @param string $object_class the class name of the object to be returned
* by the fetch methods when the
* DB_FETCHMODE_OBJECT mode is selected.
* If no class is specified by default a cast
* to object from the assoc array row will be
* done. There is also the posibility to use
* and extend the 'DB_row' class.
* @see DB_FETCHMODE_ORDERED, DB_FETCHMODE_ASSOC, DB_FETCHMODE_OBJECT
function setFetchMode($fetchmode, $object_class =
'stdClass')
return $this->raiseError('invalid fetchmode mode');
* Sets run-time configuration options for PEAR DB
* Options, their data types, default values and description:
* <var>autofree</var> <kbd>boolean</kbd> = <samp>false</samp>
* <br />should results be freed automatically when there are no
* <var>result_buffering</var> <kbd>integer</kbd> = <samp>500</samp>
* <br />how many rows of the result set should be buffered?
* <br />In mysql: mysql_unbuffered_query() is used instead of
* mysql_query() if this value is 0. (Release 1.7.0)
* <br />In oci8: this value is passed to ocisetprefetch().
* <var>debug</var> <kbd>integer</kbd> = <samp>0</samp>
* <var>persistent</var> <kbd>boolean</kbd> = <samp>false</samp>
* <br />should the connection be persistent?
* <var>portability</var> <kbd>integer</kbd> = <samp>DB_PORTABILITY_NONE</samp>
* <br />portability mode constant (see below)
* <var>seqname_format</var> <kbd>string</kbd> = <samp>%s_seq</samp>
* <br />the sprintf() format string used on sequence names. This
* format is applied to sequence names passed to
* createSequence(), nextID() and dropSequence().
* <var>ssl</var> <kbd>boolean</kbd> = <samp>false</samp>
* <br />use ssl to connect?
* -----------------------------------------
* These modes are bitwised, so they can be combined using <kbd>|</kbd>
* and removed using <kbd>^</kbd>. See the examples section below on how
* <samp>DB_PORTABILITY_NONE</samp>
* turn off all portability features
* This mode gets automatically turned on if the deprecated
* <var>optimize</var> option gets set to <samp>performance</samp>.
* <samp>DB_PORTABILITY_LOWERCASE</samp>
* convert names of tables and fields to lower case when using
* <kbd>get*()</kbd>, <kbd>fetch*()</kbd> and <kbd>tableInfo()</kbd>
* This mode gets automatically turned on in the following databases
* if the deprecated option <var>optimize</var> gets set to
* <samp>portability</samp>:
* <samp>DB_PORTABILITY_RTRIM</samp>
* right trim the data output by <kbd>get*()</kbd> <kbd>fetch*()</kbd>
* <samp>DB_PORTABILITY_DELETE_COUNT</samp>
* force reporting the number of rows deleted
* Some DBMS's don't count the number of rows deleted when performing
* simple <kbd>DELETE FROM tablename</kbd> queries. This portability
* mode tricks such DBMS's into telling the count by adding
* <samp>WHERE 1=1</samp> to the end of <kbd>DELETE</kbd> queries.
* This mode gets automatically turned on in the following databases
* if the deprecated option <var>optimize</var> gets set to
* <samp>portability</samp>:
* <samp>DB_PORTABILITY_NUMROWS</samp>
* enable hack that makes <kbd>numRows()</kbd> work in Oracle
* This mode gets automatically turned on in the following databases
* if the deprecated option <var>optimize</var> gets set to
* <samp>portability</samp>:
* <samp>DB_PORTABILITY_ERRORS</samp>
* makes certain error messages in certain drivers compatible
* with those from other DBMS's
* + mysql, mysqli: change unique/primary key constraints
* DB_ERROR_ALREADY_EXISTS -> DB_ERROR_CONSTRAINT
* + odbc(access): MS's ODBC driver reports 'no such field' as code
* 07001, which means 'too few parameters.' When this option is on
* that code gets mapped to DB_ERROR_NOSUCHFIELD.
* DB_ERROR_MISMATCH -> DB_ERROR_NOSUCHFIELD
* <samp>DB_PORTABILITY_NULL_TO_EMPTY</samp>
* convert null values to empty strings in data output by get*() and
* fetch*(). Needed because Oracle considers empty strings to be null,
* while most other DBMS's know the difference between empty and null.
* <samp>DB_PORTABILITY_ALL</samp>
* turn on all portability features
* -----------------------------------------
* Example 1. Simple setOption() example
* $db->setOption('autofree', true);
* Example 2. Portability for lowercasing and trimming
* $db->setOption('portability',
* DB_PORTABILITY_LOWERCASE | DB_PORTABILITY_RTRIM);
* Example 3. All portability options except trimming
* $db->setOption('portability',
* DB_PORTABILITY_ALL ^ DB_PORTABILITY_RTRIM);
* @param string $option option name
* @param mixed $value value for the option
* @return int DB_OK on success. A DB_Error object on failure.
* @see DB_common::$options
if (isset
($this->options[$option])) {
* Backwards compatibility check for the deprecated 'optimize'
* option. Done here in case settings change after connecting.
if ($option ==
'optimize') {
if ($value ==
'portability') {
switch ($this->phptype) {
return $this->raiseError("unknown option $option");
* Returns the value of an option
* @param string $option the option name you're curious about
* @return mixed the option's value
if (isset
($this->options[$option])) {
return $this->raiseError("unknown option $option");
* Prepares a query for multiple execution with execute()
* Creates a query that can be run multiple times. Each time it is run,
* the placeholders, if any, will be replaced by the contents of
* execute()'s $data argument.
* Three types of placeholders can be used:
* + <kbd>?</kbd> scalar value (i.e. strings, integers). The system
* will automatically quote and escape the data.
* + <kbd>!</kbd> value is inserted 'as is'
* + <kbd>&</kbd> requires a file name. The file's contents get
* inserted into the query (i.e. saving binary
* $sth = $db->prepare('INSERT INTO tbl (a, b, c) VALUES (?, !, &)');
* $res = $db->execute($sth, $data);
* Use backslashes to escape placeholder characters if you don't want
* them to be interpreted as placeholders:
* "UPDATE foo SET col=? WHERE col='over \& under'"
* With some database backends, this is emulated.
* {@internal ibase and oci8 have their own prepare() methods.}}
* @param string $query the query to be prepared
* @return mixed DB statement resource on success. A DB_Error object
* @see DB_common::execute()
$tokens =
preg_split('/((?<!\\\)[&?!])/', $query, -
1,
PREG_SPLIT_DELIM_CAPTURE);
foreach ($tokens as $val) {
* Automaticaly generates an insert or update query and pass it to prepare()
* @param string $table the table name
* @param array $table_fields the array of field names
* @param int $mode a type of query to make:
* DB_AUTOQUERY_INSERT or DB_AUTOQUERY_UPDATE
* @param string $where for update queries: the WHERE clause to
* append to the SQL statement. Don't
* include the "WHERE" keyword.
* @return resource the query handle
* @uses DB_common::prepare(), DB_common::buildManipSQL()
function autoPrepare($table, $table_fields, $mode =
DB_AUTOQUERY_INSERT,
$query =
$this->buildManipSQL($table, $table_fields, $mode, $where);
* Automaticaly generates an insert or update query and call prepare()
* @param string $table the table name
* @param array $fields_values the associative array where $key is a
* field name and $value its value
* @param int $mode a type of query to make:
* DB_AUTOQUERY_INSERT or DB_AUTOQUERY_UPDATE
* @param string $where for update queries: the WHERE clause to
* append to the SQL statement. Don't
* include the "WHERE" keyword.
* @return mixed a new DB_result object for successful SELECT queries
* or DB_OK for successul data manipulation queries.
* A DB_Error object on failure.
* @uses DB_common::autoPrepare(), DB_common::execute()
function autoExecute($table, $fields_values, $mode =
DB_AUTOQUERY_INSERT,
* Produces an SQL query string for autoPrepare()
* buildManipSQL('table_sql', array('field1', 'field2', 'field3'),
* INSERT INTO table_sql (field1,field2,field3) VALUES (?,?,?)
* - This belongs more to a SQL Builder class, but this is a simple
* - Be carefull! If you don't give a $where param with an UPDATE
* query, all the records of the table will be updated!
* @param string $table the table name
* @param array $table_fields the array of field names
* @param int $mode a type of query to make:
* DB_AUTOQUERY_INSERT or DB_AUTOQUERY_UPDATE
* @param string $where for update queries: the WHERE clause to
* append to the SQL statement. Don't
* include the "WHERE" keyword.
* @return string the sql query for autoPrepare()
function buildManipSQL($table, $table_fields, $mode, $where =
false)
if (count($table_fields) ==
0) {
foreach ($table_fields as $value) {
return "INSERT INTO $table ($names) VALUES ($values)";
foreach ($table_fields as $value) {
$sql =
"UPDATE $table SET $set";
* Executes a DB statement prepared with prepare()
* $sth = $db->prepare('INSERT INTO tbl (a, b, c) VALUES (?, !, &)');
* $res = $db->execute($sth, $data);
* @param resource $stmt a DB statement resource returned from prepare()
* @param mixed $data array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return mixed a new DB_result object for successful SELECT queries
* or DB_OK for successul data manipulation queries.
* A DB_Error object on failure.
* {@internal ibase and oci8 have their own execute() methods.}}
* @see DB_common::prepare()
function &execute($stmt, $data =
array())
$result =
$this->simpleQuery($realquery);
// {{{ executeEmulateQuery()
* Emulates executing prepared statements if the DBMS not support them
* @param resource $stmt a DB statement resource returned from execute()
* @param mixed $data array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return mixed a string containing the real query run when emulating
* prepare/execute. A DB_Error object on failure.
* @see DB_common::execute()
foreach ($data as $value) {
$fp =
@fopen($value, 'rb');
* Performs several execute() calls on the same statement handle
* $data must be an array indexed numerically
* from 0, one execute call is done for every "row" in the array.
* If an error occurs during execute(), executeMultiple() does not
* execute the unfinished rows, but rather returns that error.
* @param resource $stmt query handle from prepare()
* @param array $data numeric array containing the
* data to insert into the query
* @return int DB_OK on success. A DB_Error object on failure.
* @see DB_common::prepare(), DB_common::execute()
foreach ($data as $value) {
$res =
$this->execute($stmt, $value);
* Frees the internal resources associated with a prepared query
* @param resource $stmt the prepared statement's PHP resource
* @param bool $free_resource should the PHP resource be freed too?
* Use false if you need to get data
* from the result set later.
* @return bool TRUE on success, FALSE if $result is invalid
* @see DB_common::prepare()
* Changes a query string for various DBMS specific reasons
* It is defined here to ensure all drivers have this method available.
* @param string $query the query string to modify
* @return string the modified query string
* @see DB_mysql::modifyQuery(), DB_oci8::modifyQuery(),
* DB_sqlite::modifyQuery()
// {{{ modifyLimitQuery()
* Adds LIMIT clauses to a query string according to current DBMS standards
* It is defined here to assure that all implementations
* have this method defined.
* @param string $query the query to modify
* @param int $from the row to start to fetching (0 = the first row)
* @param int $count the numbers of rows to fetch
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return string the query string with LIMIT clauses added
* Sends a query to the database server
* The query string can be either a normal statement to be sent directly
* to the server OR if <var>$params</var> are passed the query can have
* placeholders and it will be passed through prepare() and execute().
* @param string $query the SQL query or the statement to prepare
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return mixed a new DB_result object for successful SELECT queries
* or DB_OK for successul data manipulation queries.
* A DB_Error object on failure.
* @see DB_result, DB_common::prepare(), DB_common::execute()
function &query($query, $params =
array())
$ret =
$this->execute($sth, $params);
$result =
$this->simpleQuery($query);
* Generates and executes a LIMIT query
* @param string $query the query
* @param intr $from the row to start to fetching (0 = the first row)
* @param int $count the numbers of rows to fetch
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return mixed a new DB_result object for successful SELECT queries
* or DB_OK for successul data manipulation queries.
* A DB_Error object on failure.
function &limitQuery($query, $from, $count, $params =
array())
$result =
$this->query($query, $params);
if (is_a($result, 'DB_result')) {
$result->setOption('limit_from', $from);
$result->setOption('limit_count', $count);
* Fetches the first column of the first row from a query result
* Takes care of doing the query and freeing the results when finished.
* @param string $query the SQL query
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return mixed the returned value of the query.
* A DB_Error object on failure.
function &getOne($query, $params =
array())
$params = (array)
$params;
// modifyLimitQuery() would be nice here, but it causes BC issues
$res =
$this->execute($sth, $params);
$res =
$this->query($query);
* Fetches the first row of data returned from a query result
* Takes care of doing the query and freeing the results when finished.
* @param string $query the SQL query
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @param int $fetchmode the fetch mode to use
* @return array the first row of results as an array.
* A DB_Error object on failure.
function &getRow($query, $params =
array(),
$fetchmode =
DB_FETCHMODE_DEFAULT)
// compat check, the params and fetchmode parameters used to
// have the opposite order
} elseif ($params !==
null) {
// modifyLimitQuery() would be nice here, but it causes BC issues
$res =
$this->execute($sth, $params);
$res =
$this->query($query);
$err =
$res->fetchInto($row, $fetchmode);
* Fetches a single column from a query result and returns it as an
* @param string $query the SQL query
* @param mixed $col which column to return (integer [column number,
* starting at 0] or string [column name])
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
* @return array the results as an array. A DB_Error object on failure.
* @see DB_common::query()
function &getCol($query, $col =
0, $params =
array())
$params = (array)
$params;
$res =
$this->execute($sth, $params);
$res =
$this->query($query);
if (!is_array($row =
$res->fetchRow($fetchmode))) {
$ret =
array($row[$col]);
while (is_array($row =
$res->fetchRow($fetchmode))) {
* Fetches an entire query result and returns it as an
* associative array using the first column as the key
* If the result set contains more than two columns, the value
* will be an array of the values from column 2-n. If the result
* set contains only two columns, the returned value will be a
* scalar with the value of the second column (unless forced to an
* array with the $force_array parameter). A DB error code is
* returned on errors. If the result set contains fewer than two
* columns, a DB_ERROR_TRUNCATED error is returned.
* For example, if the table "mytable" contains:
* --------------------------------
* Then the call getAssoc('SELECT id,text FROM mytable') returns:
* ...while the call getAssoc('SELECT id,text,date FROM mytable') returns:
* '1' => array('one', '944679408'),
* '2' => array('two', '944679408'),
* '3' => array('three', '944679408')
* If the more than one row occurs with the same value in the
* first column, the last row overwrites all previous ones by
* default. Use the $group parameter if you don't want to
* overwrite like this. Example:
* getAssoc('SELECT category,id,name FROM mytable', false, null,
* DB_FETCHMODE_ASSOC, true) returns:
* '1' => array(array('id' => '4', 'name' => 'number four'),
* array('id' => '6', 'name' => 'number six')
* '9' => array(array('id' => '4', 'name' => 'number four'),
* array('id' => '6', 'name' => 'number six')
* Keep in mind that database functions in PHP usually return string
* values for results regardless of the database's internal type.
* @param string $query the SQL query
* @param bool $force_array used only when the query returns
* exactly two columns. If true, the values
* of the returned array will be one-element
* arrays instead of scalars.
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of
* items passed must match quantity of
* placeholders in query: meaning 1
* placeholder for non-array parameters or
* 1 placeholder per array element.
* @param int $fetchmode the fetch mode to use
* @param bool $group if true, the values of the returned array
* is wrapped in another array. If the same
* key value (in the first column) repeats
* itself, the values will be appended to
* this array instead of overwriting the
* @return array the associative array containing the query results.
* A DB_Error object on failure.
function &getAssoc($query, $force_array =
false, $params =
array(),
$fetchmode =
DB_FETCHMODE_DEFAULT, $group =
false)
$params = (array)
$params;
$res =
$this->execute($sth, $params);
$res =
$this->query($query);
if ($cols >
2 ||
$force_array) {
// XXX this part can be optimized
// we shift away the first element to get
// indices running from 0 again
$results[$row[0]][] =
$row[1];
$results[$row[0]] =
$row[1];
* Fetches all of the rows from a query result
* @param string $query the SQL query
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of
* items passed must match quantity of
* placeholders in query: meaning 1
* placeholder for non-array parameters or
* 1 placeholder per array element.
* @param int $fetchmode the fetch mode to use:
* + DB_FETCHMODE_ORDERED | DB_FETCHMODE_FLIPPED
* + DB_FETCHMODE_ASSOC | DB_FETCHMODE_FLIPPED
* @return array the nested array. A DB_Error object on failure.
function &getAll($query, $params =
array(),
$fetchmode =
DB_FETCHMODE_DEFAULT)
// compat check, the params and fetchmode parameters used to
// have the opposite order
} elseif ($params !==
null) {
$res =
$this->execute($sth, $params);
$res =
$this->query($query);
while (DB_OK ===
$res->fetchInto($row, $fetchmode)) {
foreach ($row as $key =>
$val) {
* Enables or disables automatic commits
* @param bool $onoff true turns it on, false turns it off
* @return int DB_OK on success. A DB_Error object if the driver
* doesn't support auto-committing transactions.
* Commits the current transaction
* @return int DB_OK on success. A DB_Error object on failure.
* Reverts the current transaction
* @return int DB_OK on success. A DB_Error object on failure.
* Determines the number of rows in a query result
* @param resource $result the query result idenifier produced by PHP
* @return int the number of rows. A DB_Error object on failure.
* Determines the number of rows affected by a data maniuplation query
* 0 is returned for queries that don't manipulate data.
* @return int the number of rows. A DB_Error object on failure.
* Generates the name used inside the database for a sequence
* The createSequence() docblock contains notes about storing sequence
* @param string $sqn the sequence's public name
* @return string the sequence's name in the backend
* @see DB_common::createSequence(), DB_common::dropSequence(),
* DB_common::nextID(), DB_common::setOption()
* Returns the next free id in a sequence
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true, the seqence is automatically
* created if it does not exist
* @return int the next id number in the sequence.
* A DB_Error object on failure.
* @see DB_common::createSequence(), DB_common::dropSequence(),
* DB_common::getSequenceName()
function nextId($seq_name, $ondemand =
true)
* The name of a given sequence is determined by passing the string
* provided in the <var>$seq_name</var> argument through PHP's sprintf()
* function using the value from the <var>seqname_format</var> option as
* the sprintf()'s format argument.
* <var>seqname_format</var> is set via setOption().
* @param string $seq_name name of the new sequence
* @return int DB_OK on success. A DB_Error object on failure.
* @see DB_common::dropSequence(), DB_common::getSequenceName(),
* @param string $seq_name name of the sequence to be deleted
* @return int DB_OK on success. A DB_Error object on failure.
* @see DB_common::createSequence(), DB_common::getSequenceName(),
* Communicates an error and invoke error callbacks, etc
* Basically a wrapper for PEAR::raiseError without the message string.
* @param mixed integer error code, or a PEAR error object (all
* other parameters are ignored if this parameter is
* @param int error mode, see PEAR_Error docs
* @param mixed if error mode is PEAR_ERROR_TRIGGER, this is the
* error level (E_USER_NOTICE etc). If error mode is
* PEAR_ERROR_CALLBACK, this is the callback function,
* either as a function name, or as an array of an
* object and method name. For other error modes this
* @param string extra debug information. Defaults to the last
* query and native error code.
* @param mixed native error code, integer or string depending the
* @return object the PEAR_Error object
function &raiseError($code =
DB_ERROR, $mode =
null, $options =
null,
$userinfo =
null, $nativecode =
null)
// The error is yet a DB error object
// because we the static PEAR::raiseError, our global
// handler should be used if it is set
if ($mode ===
null &&
!empty($this->_default_error_mode)) {
$mode =
$this->_default_error_mode;
$options =
$this->_default_error_options;
if ($userinfo ===
null) {
$userinfo .=
' [nativecode=' .
trim($nativecode) .
']';
* Gets the DBMS' native error code produced by the last query
* @return mixed the DBMS' error code. A DB_Error object on failure.
* Maps native error codes to DB's portable ones
* Uses the <var>$errorcode_map</var> property defined in each driver.
* @param string|int$nativecode the error code returned by the DBMS
* @return int the portable DB error code. Return DB_ERROR if the
* current driver doesn't have a mapping for the
if (isset
($this->errorcode_map[$nativecode])) {
return $this->errorcode_map[$nativecode];
// Fall back to DB_ERROR if there was no mapping.
* Maps a DB error code to a textual message
* @param integer $dbcode the DB error code
* @return string the error message corresponding to the error code
* submitted. FALSE if the error code is unknown.
* @see DB::errorMessage()
* Returns information about a table or a result set
* The format of the resulting array depends on which <var>$mode</var>
* you select. The sample output below is based on this query:
* SELECT tblFoo.fldID, tblFoo.fldPhone, tblBar.fldId
* JOIN tblBar ON tblFoo.fldId = tblBar.fldId
* <kbd>null</kbd> (default)
* [flags] => primary_key not_null
* [flags] => primary_key not_null
* <kbd>DB_TABLEINFO_ORDER</kbd>
* <p>In addition to the information found in the default output,
* a notation of the number of columns is provided by the
* <samp>num_fields</samp> element while the <samp>order</samp>
* element provides an array with the column names as the keys and
* their location index number (corresponding to the keys in the
* the default output) as the values.</p>
* <p>If a result set has identical field names, the last one is
* <kbd>DB_TABLEINFO_ORDERTABLE</kbd>
* <p>Similar to <kbd>DB_TABLEINFO_ORDER</kbd> but adds more
* dimensions to the array in which the table names are keys and
* the field names are sub-keys. This is helpful for queries that
* join tables which have identical field names.</p>
* [ordertable] => Array (
* The <samp>flags</samp> element contains a space separated list
* of extra information about the field. This data is inconsistent
* between DBMS's due to the way each DBMS works.
* + <samp>primary_key</samp>
* + <samp>unique_key</samp>
* + <samp>multiple_key</samp>
* + <samp>not_null</samp>
* Most DBMS's only provide the <samp>table</samp> and <samp>flags</samp>
* elements if <var>$result</var> is a table name. The following DBMS's
* provide full information from queries:
* If the 'portability' option has <samp>DB_PORTABILITY_LOWERCASE</samp>
* turned on, the names of tables and fields will be lowercased.
* @param object|string $result DB_result object from a query or a
* string containing the name of a table.
* While this also accepts a query result
* resource identifier, this behavior is
* @param int $mode either unused or one of the tableInfo modes:
* <kbd>DB_TABLEINFO_ORDERTABLE</kbd>,
* <kbd>DB_TABLEINFO_ORDER</kbd> or
* <kbd>DB_TABLEINFO_FULL</kbd> (which does both).
* These are bitwise, so the first two can be
* combined using <kbd>|</kbd>.
* @return array an associative array with the information requested.
* A DB_Error object on failure.
* @see DB_common::setOption()
* If the DB_<driver> class has a tableInfo() method, that one
* overrides this one. But, if the driver doesn't have one,
* this method runs and tells users about that fact.
* Lists the tables in the current database
* @return array the list of tables. A DB_Error object on failure.
* @deprecated Method deprecated some time before Release 1.2
* Lists internal database information
* @param string $type type of information being sought.
* Common items being sought are:
* tables, databases, users, views, functions
* Each DBMS's has its own capabilities.
* @return array an array listing the items sought.
* A DB DB_Error object on failure.
* Obtains the query string needed for listing a given type of objects
* @param string $type the kind of objects you want to retrieve
* @return string the SQL query string or null if the driver doesn't
* support the object type requested
* @see DB_common::getListOf()
// {{{ nextQueryIsManip()
* Sets (or unsets) a flag indicating that the next query will be a
* manipulation query, regardless of the usual DB::isManip() heuristics.
* @param boolean true to set the flag overriding the isManip() behaviour,
* false to clear it and fall back onto isManip()
* Checks if the given query is a manipulation query. This also takes into
* account the _next_query_manip flag and sets the _last_query_manip flag
* (and resets _next_query_manip) according to the result.
* @param string The query to check.
* @return boolean true if the query is a manipulation query, false
// {{{ _rtrimArrayValues()
* Right-trims all strings in an array
* @param array $array the array to be trimmed (passed by reference)
foreach ($array as $key =>
$value) {
$array[$key] =
rtrim($value);
// {{{ _convertNullArrayValuesToEmpty()
* Converts all null values in an array to empty strings
* @param array $array the array to be de-nullified (passed by reference)
foreach ($array as $key =>
$value) {
Documentation generated on Wed, 09 Feb 2011 08:59:06 +0700 by phpDocumentor 1.4.2