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Send a MySQL query (PHP 4, PHP 5, PECL mysql:1.0)
resource mysql_db_query ( string database, string query [, resource link_identifier] )

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



The name of the database that will be selected.


The MySQL query.


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.


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


Example 1421. mysql_db_query() alternative example


if (!$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password')) {
'Could not connect to mysql';

if (!
mysql_select_db('mysql_dbname', $link)) {
'Could not select database';

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

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

while (
$row = mysql_fetch_assoc($result)) {





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.