File: D:/HostingSpaces/KWessing/buddypress/bp-forums/bbpress/bb-includes/backpress/class.bpdb.php
<?php
// backPress DB Class
// ORIGINAL CODE FROM:
// Justin Vincent (justin@visunet.ie)
// http://php.justinvincent.com
define( 'EZSQL_VERSION', 'BP1.25' );
define( 'OBJECT', 'OBJECT', true );
define( 'OBJECT_K', 'OBJECT_K', false );
define( 'ARRAY_A', 'ARRAY_A', false );
define( 'ARRAY_K', 'ARRAY_K', false );
define( 'ARRAY_N', 'ARRAY_N', false );
if ( !defined( 'SAVEQUERIES' ) ) {
define( 'SAVEQUERIES', false );
}
if ( !defined( 'BPDB__ERROR_STRING' ) ) {
define( 'BPDB__ERROR_STRING', 'DB Error: %s, %s: %s' );
}
if ( !defined( 'BPDB__ERROR_HTML' ) ) {
define( 'BPDB__ERROR_HTML', '<div class="error"><p><strong>DB Error in %3$s:</strong> %1$s</p><pre>%2$s</pre></div>' );
}
if ( !defined( 'BPDB__CONNECT_ERROR_MESSAGE' ) ) {
define( 'BPDB__CONNECT_ERROR_MESSAGE', 'DB Error: cannot connect' );
}
if ( !defined( 'BPDB__SELECT_ERROR_MESSAGE' ) ) {
define( 'BPDB__SELECT_ERROR_MESSAGE', 'DB Error: cannot select' );
}
if ( !defined( 'BPDB__DB_VERSION_ERROR' ) ) {
define( 'BPDB__DB_VERSION_ERROR', 'DB Requires MySQL version 4.0 or higher' );
}
if ( !defined( 'BPDB__PHP_EXTENSION_MISSING' ) ) {
define( 'BPDB__PHP_EXTENSION_MISSING', 'DB Requires The MySQL PHP extension' );
}
class BPDB
{
/**
* Whether to show SQL/DB errors
*
* @since 1.0
* @access private
* @var bool
*/
var $show_errors = false;
/**
* Whether to suppress errors during the DB bootstrapping.
*
* @access private
* @since 1.0
* @var bool
*/
var $suppress_errors = false;
/**
* The last error during query.
*
* @since 1.0
* @var string
*/
var $last_error = '';
/**
* Amount of queries made
*
* @since 1.0
* @access private
* @var int
*/
var $num_queries = 0;
/**
* The last query made
*
* @since 1.0
* @access private
* @var string
*/
var $last_query = null;
/**
* Saved info on the table column
*
* @since 1.0
* @access private
* @var array
*/
var $col_info = array();
/**
* Saved queries that were executed
*
* @since 1.0
* @access private
* @var array
*/
var $queries = array();
/**
* Whether to use the query log
*
* @since 1.0
* @access private
* @var bool
*/
var $save_queries = false;
/**
* Table prefix
*
* You can set this to have multiple installations
* in a single database. The second reason is for possible
* security precautions.
*
* @since 1.0
* @access private
* @var string
*/
var $prefix = '';
/**
* Whether the database queries are ready to start executing.
*
* @since 1.0
* @access private
* @var bool
*/
var $ready = false;
/**
* The currently connected MySQL connection resource.
*
* @since 1.0
* @access private
* @var bool|resource
*/
var $dbh = false;
/**
* List of tables
*
* @since 1.0
* @access private
* @var array
*/
var $tables = array();
/**
* Whether to use mysql_real_escape_string
*
* @since 1.0
* @access public
* @var bool
*/
var $real_escape = false;
/**
* PHP4 style constructor
*
* @since 1.0
*
* @return unknown Returns the result of bpdb::__construct()
*/
function BPDB()
{
$args = func_get_args();
register_shutdown_function( array( &$this, '__destruct' ) );
return call_user_func_array( array( &$this, '__construct' ), $args );
}
/**
* PHP5 style constructor
*
* Grabs the arguments, calls bpdb::_init() and then connects to the database
*
* @since 1.0
*
* @return void
*/
function __construct()
{
$args = func_get_args();
$args = call_user_func_array( array( &$this, '_init' ), $args );
$this->db_connect_host( $args );
}
/**
* Initialises the class variables based on provided arguments
*
* @since 1.0
*
* @param array $args The provided connection settings
* @return array The current connection settings after processing by init
*/
function _init( $args )
{
if ( !extension_loaded( 'mysql' ) ) {
$this->show_errors();
$this->bail( BPDB__PHP_EXTENSION_MISSING );
return;
}
if ( 4 == func_num_args() ) {
$args = array(
'user' => $args,
'password' => func_get_arg( 1 ),
'name' => func_get_arg( 2 ),
'host' => func_get_arg( 3 )
);
}
$defaults = array(
'user' => false,
'password' => false,
'name' => false,
'host' => 'localhost',
'charset' => false,
'collate' => false,
'errors' => false
);
$args = wp_parse_args( $args, $defaults );
switch ( $args['errors'] ) {
case 'show' :
$this->show_errors( true );
break;
case 'suppress' :
$this->suppress_errors( true );
break;
}
return $args;
}
/**
* PHP5 style destructor, registered as shutdown function in PHP4
*
* @since 1.0
*
* @return bool Always returns true
*/
function __destruct()
{
return true;
}
/**
* Figure out which database server should handle the query, and connect to it.
*
* @since 1.0
*
* @param string query
* @return resource mysql database connection
*/
function &db_connect( $query = '' )
{
$false = false;
if ( empty( $query ) ) {
return $false;
}
return $this->dbh;
}
/**
* Connects to the database server and selects a database
*
* @since 1.0
*
* @param array args
* name => string DB name (required)
* user => string DB user (optional: false)
* password => string DB user password (optional: false)
* host => string DB hostname (optional: 'localhost')
* charset => string DB default charset. Used in a SET NAMES query. (optional)
* collate => string DB default collation. If charset supplied, optionally added to the SET NAMES query (optional)
* @return void|bool void if cannot connect, false if cannot select, true if success
*/
function db_connect_host( $args )
{
extract( $args, EXTR_SKIP );
unset( $this->dbh ); // De-reference before re-assigning
$this->dbh = @mysql_connect( $host, $user, $password, true );
if ( !$this->dbh ) {
if ( !$this->suppress_errors ) {
$this->show_errors();
}
$this->bail( BPDB__CONNECT_ERROR_MESSAGE );
return;
}
$this->ready = true;
if ( $this->has_cap( 'collation' ) ) {
if ( !empty( $charset ) ) {
if ( function_exists( 'mysql_set_charset' ) ) {
mysql_set_charset( $charset, $this->dbh );
$this->real_escape = true;
} else {
$collation_query = "SET NAMES '{$charset}'";
if ( !empty( $collate ) ) {
$collation_query .= " COLLATE '{$collate}'";
}
$this->query( $collation_query, true );
}
}
}
return $this->select( $name, $this->dbh );
}
/**
* Sets the table prefix for the WordPress tables.
*
* @since 1.0
*
* @param string prefix
* @param false|array tables (optional: false)
* table identifiers are array keys
* array values
* empty: set prefix: array( 'posts' => false, 'users' => false, ... )
* string: set to that array value: array( 'posts' => 'my_posts', 'users' => 'my_users' )
* OR array values (with numeric keys): array( 'posts', 'users', ... )
*
* @return string the previous prefix (mostly only meaningful if all $table parameter was false)
*/
function set_prefix( $prefix, $tables = false )
{
if ( !$prefix ) {
return false;
}
if ( preg_match( '|[^a-z0-9_]|i', $prefix ) ) {
return new WP_Error( 'invalid_db_prefix', 'Invalid database prefix' ); // No gettext here
}
$old_prefix = $this->prefix;
if ( $tables && is_array( $tables ) ) {
$_tables =& $tables;
} else {
$_tables =& $this->tables;
$this->prefix = $prefix;
}
foreach ( $_tables as $key => $value ) {
if ( is_numeric( $key ) ) { // array( 'posts', 'users', ... )
$this->$value = $prefix . $value;
} elseif ( !$value ) {
$this->$key = $prefix . $key; // array( 'posts' => false, 'users' => false, ... )
} elseif ( is_string( $value ) ) { // array( 'posts' => 'my_posts', 'users' => 'my_users' )
$this->$key = $value;
}
}
return $old_prefix;
}
/**
* Selects a database using the current database connection.
*
* The database name will be changed based on the current database
* connection. On failure, the execution will bail and display an DB error.
*
* @since 1.0
*
* @param string $db MySQL database name
* @return bool True on success, false on failure.
*/
function select( $db, &$dbh )
{
if ( !@mysql_select_db( $db, $dbh ) ) {
$this->ready = false;
$this->show_errors();
$this->bail( BPDB__SELECT_ERROR_MESSAGE );
return false;
}
return true;
}
function _weak_escape( $string )
{
return addslashes( $string );
}
function _real_escape( $string )
{
if ( $this->dbh && $this->real_escape ) {
return mysql_real_escape_string( $string, $this->dbh );
} else {
return addslashes( $string );
}
}
function _escape( $data )
{
if ( is_array( $data ) ) {
foreach ( (array) $data as $k => $v ) {
if ( is_array( $v ) ) {
$data[$k] = $this->_escape( $v );
} else {
$data[$k] = $this->_real_escape( $v );
}
}
} else {
$data = $this->_real_escape( $data );
}
return $data;
}
/**
* Escapes content for insertion into the database using addslashes(), for security
*
* @since 1.0
*
* @param string|array $data
* @return string query safe string
*/
function escape( $data )
{
if ( is_array( $data ) ) {
foreach ( (array) $data as $k => $v ) {
if ( is_array( $v ) ) {
$data[$k] = $this->escape( $v );
} else {
$data[$k] = $this->_weak_escape( $v );
}
}
} else {
$data = $this->_weak_escape( $data );
}
return $data;
}
/**
* Escapes content by reference for insertion into the database, for security
*
* @since 1.0
*
* @param string $s
*/
function escape_by_ref( &$string )
{
$string = $this->_real_escape( $string );
}
/**
* Escapes array recursively for insertion into the database, for security
* @param array $array
*/
function escape_deep( $array )
{
return $this->_escape( $array );
}
/**
* Prepares a SQL query for safe execution. Uses sprintf()-like syntax.
*
* This function only supports a small subset of the sprintf syntax; it only supports %d (decimal number), %s (string).
* Does not support sign, padding, alignment, width or precision specifiers.
* Does not support argument numbering/swapping.
*
* May be called like {@link http://php.net/sprintf sprintf()} or like {@link http://php.net/vsprintf vsprintf()}.
*
* Both %d and %s should be left unquoted in the query string.
*
* <code>
* wpdb::prepare( "SELECT * FROM `table` WHERE `column` = %s AND `field` = %d", "foo", 1337 )
* </code>
*
* @link http://php.net/sprintf Description of syntax.
* @since 1.0
*
* @param string $query Query statement with sprintf()-like placeholders
* @param array|mixed $args The array of variables to substitute into the query's placeholders if being called like {@link http://php.net/vsprintf vsprintf()}, or the first variable to substitute into the query's placeholders if being called like {@link http://php.net/sprintf sprintf()}.
* @param mixed $args,... further variables to substitute into the query's placeholders if being called like {@link http://php.net/sprintf sprintf()}.
* @return null|string Sanitized query string
*/
function prepare( $query = null ) // ( $query, *$args )
{
if ( is_null( $query ) ) {
return;
}
$args = func_get_args();
array_shift( $args );
// If args were passed as an array (as in vsprintf), move them up
if ( isset( $args[0] ) && is_array( $args[0] ) ) {
$args = $args[0];
}
$query = str_replace( "'%s'", '%s', $query ); // in case someone mistakenly already singlequoted it
$query = str_replace( '"%s"', '%s', $query ); // doublequote unquoting
$query = str_replace( '%s', "'%s'", $query ); // quote the strings
array_walk( $args, array( &$this, 'escape_by_ref' ) );
return @vsprintf( $query, $args );
}
/**
* Get SQL/DB error
*
* @since 1.0
*
* @param string $str Error string
*/
function get_error( $str = '' )
{
if ( empty( $str ) ) {
if ( $this->last_error ) {
$str = $this->last_error;
} else {
return false;
}
}
$caller = $this->get_caller();
$error_str = sprintf( BPDB__ERROR_STRING, $str, $this->last_query, $caller );
if ( class_exists( 'WP_Error' ) ) {
return new WP_Error( 'db_query', $error_str, array( 'query' => $this->last_query, 'error' => $str, 'caller' => $caller ) );
} else {
return array( 'query' => $this->last_query, 'error' => $str, 'caller' => $caller, 'error_str' => $error_str );
}
}
/**
* Print SQL/DB error.
*
* @since 1.0
*
* @param string $str The error to display
* @return bool False if the showing of errors is disabled.
*/
function print_error( $str = '' )
{
if ( $this->suppress_errors ) {
return false;
}
$error = $this->get_error( $str );
if ( is_object( $error ) && is_a( $error, 'WP_Error' ) ) {
$err = $error->get_error_data();
$err['error_str'] = $error->get_error_message();
} else {
$err =& $error;
}
$log_file = ini_get( 'error_log' );
if ( !empty( $log_file ) && ( 'syslog' != $log_file ) && is_writable( $log_file ) && function_exists( 'error_log' ) ) {
error_log($err['error_str'], 0);
}
// Is error output turned on or not
if ( !$this->show_errors ) {
return false;
}
$str = htmlspecialchars( $err['error'], ENT_QUOTES );
$query = htmlspecialchars( $err['query'], ENT_QUOTES );
$caller = htmlspecialchars( $err['caller'], ENT_QUOTES );
// If there is an error then take note of it
printf( BPDB__ERROR_HTML, $str, $query, $caller );
}
/**
* Enables showing of database errors.
*
* This function should be used only to enable showing of errors.
* bpdb::hide_errors() should be used instead for hiding of errors. However,
* this function can be used to enable and disable showing of database
* errors.
*
* @since 1.0
*
* @param bool $show Whether to show or hide errors
* @return bool Old value for showing errors.
*/
function show_errors( $show = true )
{
$errors = $this->show_errors;
$this->show_errors = $show;
return $errors;
}
/**
* Disables showing of database errors.
*
* @since 1.0
*
* @return bool Whether showing of errors was active or not
*/
function hide_errors()
{
return $this->show_errors( false );
}
/**
* Whether to suppress database errors.
*
* @since 1.0
*
* @param bool $suppress
* @return bool previous setting
*/
function suppress_errors( $suppress = true )
{
$errors = $this->suppress_errors;
$this->suppress_errors = $suppress;
return $errors;
}
/**
* Kill cached query results.
*
* @since 1.0
*/
function flush()
{
$this->last_result = array();
$this->col_info = array();
$this->last_query = null;
$this->last_error = '';
$this->num_rows = 0;
}
/**
* Perform a MySQL database query, using current database connection.
*
* More information can be found on the codex page.
*
* @since 1.0
*
* @param string $query
* @return int|false Number of rows affected/selected or false on error
*/
function query( $query, $use_current = false )
{
if ( !$this->ready ) {
return false;
}
// filter the query, if filters are available
// NOTE: some queries are made before the plugins have been loaded, and thus cannot be filtered with this method
if ( function_exists( 'apply_filters' ) ) {
$query = apply_filters( 'query', $query );
}
// initialise return
$return_val = 0;
$this->flush();
// Log how the function was called
$this->func_call = "\$db->query(\"$query\")";
// Keep track of the last query for debug..
$this->last_query = $query;
// Perform the query via std mysql_query function..
if ( SAVEQUERIES ) {
$this->timer_start();
}
if ( $use_current ) {
$dbh =& $this->dbh;
} else {
$dbh = $this->db_connect( $query );
}
$this->result = @mysql_query( $query, $dbh );
++$this->num_queries;
if ( SAVEQUERIES ) {
$this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() );
}
// If there is an error then take note of it..
if ( $this->last_error = mysql_error( $dbh ) ) {
return $this->print_error( $this->last_error );
}
if ( preg_match( "/^\\s*(insert|delete|update|replace|alter) /i", $query ) ) {
$this->rows_affected = mysql_affected_rows( $dbh );
// Take note of the insert_id
if ( preg_match( "/^\\s*(insert|replace) /i", $query ) ) {
$this->insert_id = mysql_insert_id( $dbh );
}
// Return number of rows affected
$return_val = $this->rows_affected;
} else {
$i = 0;
while ( $i < @mysql_num_fields( $this->result ) ) {
$this->col_info[$i] = @mysql_fetch_field( $this->result );
$i++;
}
$num_rows = 0;
while ( $row = @mysql_fetch_object( $this->result ) ) {
$this->last_result[$num_rows] = $row;
$num_rows++;
}
@mysql_free_result( $this->result );
// Log number of rows the query returned
$this->num_rows = $num_rows;
// Return number of rows selected
$return_val = $this->num_rows;
}
return $return_val;
}
/**
* Insert a row into a table.
*
* <code>
* wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) )
* </code>
*
* @since 1.0
* @see bpdb::prepare()
*
* @param string $table table name
* @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
* @param array|string $format (optional) An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings.
* @return int|false The number of rows inserted, or false on error.
*/
function insert( $table, $data, $format = null )
{
$formats = $format = (array) $format;
$fields = array_keys( $data );
$formatted_fields = array();
foreach ( $fields as $field ) {
if ( !empty( $format ) ) {
$form = ( $form = array_shift( $formats ) ) ? $form : $format[0];
} elseif ( isset( $this->field_types[$field] ) ) {
$form = $this->field_types[$field];
} elseif ( is_null( $data[$field] ) ) {
$form = 'NULL';
unset( $data[$field] );
} else {
$form = '%s';
}
$formatted_fields[] = $form;
}
$sql = "INSERT INTO `$table` (`" . implode( '`,`', $fields ) . "`) VALUES (" . implode( ",", $formatted_fields ) . ")";
return $this->query( $this->prepare( $sql, $data ) );
}
/**
* Update a row in the table
*
* <code>
* wpdb::update( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( 'ID' => 1 ), array( '%s', '%d' ), array( '%d' ) )
* </code>
*
* @since 1.0
* @see bpdb::prepare()
*
* @param string $table table name
* @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
* @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
* @param array|string $format (optional) An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings.
* @param array|string $format_where (optional) An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $where will be treated as strings.
* @return int|false The number of rows updated, or false on error.
*/
function update( $table, $data, $where, $format = null, $where_format = null )
{
if ( !is_array( $where ) ) {
return false;
}
$formats = $format = (array) $format;
$bits = $wheres = array();
foreach ( (array) array_keys( $data ) as $field ) {
if ( !empty( $format ) ) {
$form = ( $form = array_shift( $formats ) ) ? $form : $format[0];
} elseif ( isset( $this->field_types[$field] ) ) {
$form = $this->field_types[$field];
} elseif ( is_null( $data[$field] ) ) {
$form = 'NULL';
unset( $data[$field] );
} else {
$form = '%s';
}
$bits[] = "`$field` = {$form}";
}
$where_formats = $where_format = (array) $where_format;
foreach ( (array) array_keys( $where ) as $field ) {
if ( !empty( $where_format ) ) {
$form = ( $form = array_shift( $where_formats ) ) ? $form : $where_format[0];
} elseif ( isset( $this->field_types[$field] ) ) {
$form = $this->field_types[$field];
} elseif ( is_null( $where[$field] ) ) {
unset( $where[$field] );
$wheres[] = "`$field` IS NULL";
continue;
} else {
$form = '%s';
}
$wheres[] = "`$field` = {$form}";
}
$sql = "UPDATE `$table` SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres );
return $this->query( $this->prepare( $sql, array_merge( array_values( $data ), array_values( $where ) ) ) );
}
/**
* Retrieve one variable from the database.
*
* Executes a SQL query and returns the value from the SQL result.
* If the SQL result contains more than one column and/or more than one row, this function returns the value in the column and row specified.
* If $query is null, this function returns the value in the specified column and row from the previous SQL result.
*
* @since 1.0
*
* @param string|null $query SQL query. If null, use the result from the previous query.
* @param int $x (optional) Column of value to return. Indexed from 0.
* @param int $y (optional) Row of value to return. Indexed from 0.
* @return string Database query result
*/
function get_var( $query=null, $x = 0, $y = 0 )
{
$this->func_call = "\$db->get_var(\"$query\",$x,$y)";
if ( $query ) {
$this->query( $query );
}
// Extract var out of cached results based x,y vals
if ( !empty( $this->last_result[$y] ) ) {
$values = array_values( get_object_vars( $this->last_result[$y] ) );
}
// If there is a value return it else return null
return ( isset($values[$x]) && $values[$x]!=='' ) ? $values[$x] : null;
}
/**
* Retrieve one row from the database.
*
* Executes a SQL query and returns the row from the SQL result.
*
* @since 1.0
*
* @param string|null $query SQL query.
* @param string $output (optional) one of ARRAY_A | ARRAY_N | OBJECT constants. Return an associative array (column => value, ...), a numerically indexed array (0 => value, ...) or an object ( ->column = value ), respectively.
* @param int $y (optional) Row to return. Indexed from 0.
* @return mixed Database query result in format specifed by $output
*/
function get_row( $query = null, $output = OBJECT, $y = 0 )
{
$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
if ( $query ) {
$this->query( $query );
} else {
return null;
}
if ( !isset( $this->last_result[$y] ) ) {
return null;
}
if ( $output == OBJECT ) {
return $this->last_result[$y] ? $this->last_result[$y] : null;
} elseif ( $output == ARRAY_A ) {
return $this->last_result[$y] ? get_object_vars( $this->last_result[$y] ) : null;
} elseif ( $output == ARRAY_N ) {
return $this->last_result[$y] ? array_values( get_object_vars( $this->last_result[$y] ) ) : null;
} else {
$this->print_error( " \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N" );
}
}
/**
* Retrieve one column from the database.
*
* Executes a SQL query and returns the column from the SQL result.
* If the SQL result contains more than one column, this function returns the column specified.
* If $query is null, this function returns the specified column from the previous SQL result.
*
* @since 1.0
*
* @param string|null $query SQL query. If null, use the result from the previous query.
* @param int $x Column to return. Indexed from 0.
* @return array Database query result. Array indexed from 0 by SQL result row number.
*/
function get_col( $query = null , $x = 0 )
{
if ( $query ) {
$this->query( $query );
}
$new_array = array();
// Extract the column values
for ( $i=0; $i < count( $this->last_result ); $i++ ) {
$new_array[$i] = $this->get_var( null, $x, $i );
}
return $new_array;
}
/**
* Retrieve an entire SQL result set from the database (i.e., many rows)
*
* Executes a SQL query and returns the entire SQL result.
*
* @since 1.0
*
* @param string $query SQL query.
* @param string $output (optional) ane of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K | ARRAY_K constants. With one of the first three, return an array of rows indexed from 0 by SQL result row number. Each row is an associative array (column => value, ...), a numerically indexed array (0 => value, ...), or an object. ( ->column = value ), respectively. With OBJECT_K and ARRAY_K, return an associative array of row objects keyed by the value of each row's first column's value. Duplicate keys are discarded.
* @return mixed Database query results
*/
function get_results( $query = null, $output = OBJECT )
{
$this->func_call = "\$db->get_results(\"$query\", $output)";
if ( $query ) {
$this->query($query);
} else {
return null;
}
if ( $output == OBJECT ) {
// Return an integer-keyed array of row objects
return $this->last_result;
} elseif ( $output == OBJECT_K || $output == ARRAY_K ) {
// Return an array of row objects with keys from column 1
// (Duplicates are discarded)
$key = $this->col_info[0]->name;
foreach ( $this->last_result as $row ) {
if ( !isset( $new_array[ $row->$key ] ) ) {
$new_array[ $row->$key ] = $row;
}
}
if ( $output == ARRAY_K ) {
return array_map( 'get_object_vars', $new_array );
}
return $new_array;
} elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
// Return an integer-keyed array of...
if ( $this->last_result ) {
$i = 0;
foreach( $this->last_result as $row ) {
if ( $output == ARRAY_N ) {
// ...integer-keyed row arrays
$new_array[$i] = array_values( get_object_vars( $row ) );
} else {
// ...column name-keyed row arrays
$new_array[$i] = get_object_vars( $row );
}
++$i;
}
return $new_array;
}
}
}
/**
* Retrieve column metadata from the last query.
*
* @since 1.0
*
* @param string $info_type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill
* @param int $col_offset 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type
* @return mixed Column Results
*/
function get_col_info( $info_type = 'name', $col_offset = -1 )
{
if ( $this->col_info ) {
if ( $col_offset == -1 ) {
$i = 0;
foreach( (array) $this->col_info as $col ) {
$new_array[$i] = $col->{$info_type};
$i++;
}
return $new_array;
} else {
return $this->col_info[$col_offset]->{$info_type};
}
}
}
/**
* Starts the timer, for debugging purposes.
*
* @since 1.0
*
* @return true
*/
function timer_start()
{
$mtime = microtime();
$mtime = explode( ' ', $mtime );
$this->time_start = $mtime[1] + $mtime[0];
return true;
}
/**
* Stops the debugging timer.
*
* @since 1.0
*
* @return int Total time spent on the query, in milliseconds
*/
function timer_stop()
{
$mtime = microtime();
$mtime = explode( ' ', $mtime );
$time_end = $mtime[1] + $mtime[0];
$time_total = $time_end - $this->time_start;
return $time_total;
}
/**
* Wraps errors in a nice header and footer and dies.
*
* Will not die if bpdb::$show_errors is true
*
* @since 1.0
*
* @param string $message
* @return false|void
*/
function bail( $message )
{
if ( !$this->show_errors ) {
if ( class_exists( 'WP_Error' ) )
$this->error = new WP_Error( '500', $message );
else
$this->error = $message;
return false;
}
backpress_die( $message );
}
/**
* Whether or not MySQL database is at least the required minimum version.
*
* @since 1.0
*
* @return WP_Error
*/
function check_database_version( $dbh_or_table = false )
{
// Make sure the server has MySQL 4.0
if ( version_compare( $this->db_version( $dbh_or_table ), '4.0.0', '<' ) ) {
return new WP_Error( 'database_version', BPDB__DB_VERSION_ERROR );
}
}
/**
* Whether of not the database supports collation.
*
* Called when BackPress is generating the table scheme.
*
* @since 1.0
*
* @return bool True if collation is supported, false if version does not
*/
function supports_collation()
{
return $this->has_cap( 'collation' );
}
/**
* Generic function to determine if a database supports a particular feature
*
* @since 1.0
*
* @param string $db_cap the feature
* @param false|string|resource $dbh_or_table Which database to test. False = the currently selected database, string = the database containing the specified table, resource = the database corresponding to the specified mysql resource.
* @return bool
*/
function has_cap( $db_cap, $dbh_or_table = false )
{
$version = $this->db_version( $dbh_or_table );
switch ( strtolower( $db_cap ) ) {
case 'collation' :
case 'group_concat' :
case 'subqueries' :
return version_compare( $version, '4.1', '>=' );
break;
case 'index_hint_for_join' :
return version_compare( $version, '5.0', '>=' );
break;
case 'index_hint_lists' :
case 'index_hint_for_any' :
return version_compare( $version, '5.1', '>=' );
break;
}
return false;
}
/**
* The database version number
*
* @since 1.0
*
* @param false|string|resource $dbh_or_table Which database to test. False = the currently selected database, string = the database containing the specified table, resource = the database corresponding to the specified mysql resource.
* @return false|string false on failure, version number on success
*/
function db_version( $dbh_or_table = false )
{
if ( !$dbh_or_table ) {
$dbh =& $this->dbh;
} elseif ( is_resource( $dbh_or_table ) ) {
$dbh =& $dbh_or_table;
} else {
$dbh = $this->db_connect( "DESCRIBE $dbh_or_table" );
}
if ( $dbh ) {
return preg_replace( '|[^0-9\.]|', '', mysql_get_server_info( $dbh ) );
}
return false;
}
/**
* Retrieve the name of the function that called bpdb.
*
* Requires PHP 4.3 and searches up the list of functions until it reaches
* the one that would most logically had called this method.
*
* @since 1.0
*
* @return string The name of the calling function
*/
function get_caller()
{
// requires PHP 4.3+
if ( !is_callable( 'debug_backtrace' ) ) {
return '';
}
$bt = debug_backtrace();
$caller = array();
$bt = array_reverse( $bt );
foreach ( (array) $bt as $call ) {
if ( @$call['class'] == __CLASS__ ) {
continue;
}
$function = $call['function'];
if ( isset( $call['class'] ) ) {
$function = $call['class'] . "->$function";
}
$caller[] = $function;
}
$caller = join( ', ', $caller );
return $caller;
}
}