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mysql_free_result
(PHP 4, PHP 5)
mysql_free_result — Free result memory
This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:
- mysqli_free_result()
- Assign the value of
NULLto the PDO object, or PDOStatement::closeCursor()
Description
$result
) : bool
mysql_free_result() will free all memory
associated with the result identifier result.
mysql_free_result() only needs to be called if you are concerned about how much memory is being used for queries that return large result sets. All associated result memory is automatically freed at the end of the script's execution.
Parameters
-
result -
The result resource that is being evaluated. This result comes from a call to mysql_query().
Return Values
Returns TRUE on success or FALSE on failure.
If a non-resource is used for the result, an
error of level E_WARNING will be emitted. It's worth noting that
mysql_query() only returns a resource
for SELECT, SHOW, EXPLAIN, and DESCRIBE queries.
Examples
Example #1 A mysql_free_result() example
<?php
$result = mysql_query("SELECT id,email FROM people WHERE id = '42'");
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
/* Use the result, assuming we're done with it afterwards */
$row = mysql_fetch_assoc($result);
/* Now we free up the result and continue on with our script */
mysql_free_result($result);
echo $row['id'];
echo $row['email'];
?>
Notes
Note:
For backward compatibility, the following deprecated alias may be used: mysql_freeresult()
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