MySQL and PHP
Copyright 1997-2021 the PHP Documentation Group.
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 null to the PDO object, or PDOStatement::closeCursor
|
bool mysql_free_result(resource result);
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.
result
The result resource that is being
evaluated. This result comes from a call to
mysql_query
.
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.
Example 6.32 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']; ?>
For backward compatibility, the following deprecated alias may
be used: mysql_freeresult
mysql_query
|
is_resource
|