MySQL
PHP Manual

mysql_db_query

(PHP 4, PHP 5, PECL mysql:1.0)

mysql_db_query — Send a MySQL query

Description

resource mysql_db_query ( string $database , string $query [, resource $link_identifier ] )

mysql_db_query() selects a database, and executes a query on it.

Parameters

database

The name of the database that will be selected.

query

The MySQL query.

link_identifier

The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If by chance no connection is found or established, an E_WARNING level warning is generated.

Return Values

Returns a positive MySQL result resource to the query result, or FALSE on error. The function also returns TRUE/FALSE for INSERT/UPDATE/DELETE queries to indicate success/failure.

ChangeLog

Version Description
4.0.6 This function is deprecated, do not use this function. Use mysql_select_db() and mysql_query() instead.

Examples

Example#1 mysql_db_query() alternative example

<?php

if (!$link mysql_connect('mysql_host''mysql_user''mysql_password')) {
    echo 
'Could not connect to mysql';
    exit;
}

if (!
mysql_select_db('mysql_dbname'$link)) {
    echo 
'Could not select database';
    exit;
}

$sql    'SELECT foo FROM bar WHERE id = 42';
$result mysql_query($sql$link);

if (!
$result) {
    echo 
"DB Error, could not query the database\n";
    echo 
'MySQL Error: ' mysql_error();
    exit;
}

while (
$row mysql_fetch_assoc($result)) {
    echo 
$row['foo'];
}

mysql_free_result($result);

?>

Notes

Note: Be aware that this function does NOT switch back to the database you were connected before. In other words, you can't use this function to temporarily run a sql query on another database, you would have to manually switch back. Users are strongly encouraged to use the database.table syntax in their sql queries or mysql_select_db() instead of this function.

See Also


MySQL
PHP Manual