PHP实现小米3有货检测后发邮件

<?php
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, "http://www.mi.com/buyphone/mi3");
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($curl);
curl_close($curl);
preg_match_all("/isLack:(.*),/",$data,$out);
if($out[1][24]=='false'){
    mail("admin@qq.com","小米3黑色电信版有货了","购买地址 http://order.mi.com/event/selectPacket/goodsid/2140800022");
}else{
    echo "Wait";    
}

if($out[1][23]=='false'){    
    mail("admin@qq.com","小米3白色电信版有货了","购买地址 http://order.mi.com/event/selectPacket/goodsid/2141000021");
}else{
    echo "Wait";    
}

if($out[1][25]=='false'){
    echo "Buy";    
    mail("admin@qq.com","小米3银色电信版有货了","购买地址 http://order.mi.com/event/selectPacket/goodsid/2141300016");
}else{
    echo "Wait";
}