note 76213 added to function.mysql-insert-id
| From: | daiguo at osu1 dot php dot net | Date: | Thu, 05 Jul 2007 13:43:54 +0000 |
| Subject: | note 76213 added to function.mysql-insert-id | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-128247@lists.php.net to get a copy of this message | ||
To: Ben AT alfreido.com
<?php
function previous_id($table, $id_column) {
if ($table && $id_column) {
$result = mysql_query("SELECT MAX(".$id_column.") AS maxid FROM ".$table);
$stuff = mysql_fetch_assoc($result);
return $stuff['maxid'];
} else {
return false;
}
}
?>
Use MySQL's built-in function MAX(). It's faster because any min/max algorithm is faster
than sorting entire table.
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Manual Page -- http://www.php.net/manual/en/function.mysql-insert-id.php
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