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mysql释放结果内存代码示例

PHPz
Release： 2019-02-27 16:24:44
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mysql释放结果内存代码示例（相关mysql视频教程推荐：《mysql教程》）

定义和用法

mysql_free_result() 函数释放结果内存。

如果成功，则返回 true，如果失败，，则返回 false。

语法

mysql_free_result(data)参数 描述

data 必需。要释放的结果标识符。该结果标识符是从 mysql_query() 返回的结果。

提示和注释

注释：mysql_free_result() 仅需要在考虑到返回很大的结果集时会占用多少内存时调用。在脚本结束后所有关联的内存都会被自动释放。

例子

$con = mysql_connect("localhost", "peter", "abc123");
　　if (!$con)
　　{
　　die('Could not connect: ' . mysql_error());
　　}
　　$db_selected = mysql_select_db("test_db",$con);
　　$sql = "SELECT * from Person";
　　$result = mysql_query($sql,$con);
　　print_r(mysql_fetch_row($result));
　　// 释放内存
　　mysql_free_result($result);
　　$sql = "SELECT * from Customers";
　　$result = mysql_query($sql,$con);
　　print_r(mysql_fetch_row($result));
　　mysql_close($con);
　　?>
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Related labels：
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