checkusername.php

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<?php
//检测帐号重复
include_once("functions/class_mysql.php");
$check_rs=$db->query("select username from users where `username`='".$_GET['UserName']."'");
$check_row=$db->fetch_array($check_rs);
$db->close();
if($check_row){
	echo "1";
	exit;
}
else{
	echo "0";
	exit;
}
?>