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                # PHP mysql_free_result() 函數 ## 定義和用法 mysql_free_result() 函數釋放結果內存。 如果成功,則返回 true,如果失敗,則返回 false。 ## 語法 ~~~ mysql_free_result(data) ~~~ 參數描述 data 必需。要釋放的結果標識符。該結果標識符是從 mysql_query() 返回的結果。 ## 提示和注釋 注釋:mysql_free_result() 僅需要在考慮到返回很大的結果集時會占用多少內存時調用。在腳本結束后所有關聯的內存都會被自動釋放。 ## 例子 ~~~ <?php $con = mysql_connect("localhost", "peter", "abc123"); if (!$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)); // 釋放內存 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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