php官方例子有bug,简单问题
<?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));
// 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);
?>
为什么,上面两次mysql_query,只有第一次调用了mysql_free_result,下面的那个mysql_query需要调用吗,如果来回查询个几万次,怎么处理