php自定义函数之简单提示框alert

/*—————————————————— */
//– 简单提示框函数
/*—————————————————— */
function alert ($msg,$url=”)
{
$str = ‘<script type=”text/javascript”>’;
$str.=”alert(‘”.$msg.”‘);”;

if ($url != ”)
{
$str.=”window.location.href=’{$url}’;”;
}
else
{
$str.=”window.history.back();”;
}
echo $str.=’</script>’;
}


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