php api验证码怎么写？php手机短信验证码功能、PHP短信api

/*--------------------------------

功能:     中国短信网PHP HTTP接口 发送短信

修改日期:   2009-04-08

说明:     http://http.c123.com/tx/?uid=用户账号&pwd=MD5位32密码&mobile=号码&content=内容

状态:

    100 发送成功

    101 验证失败

    102 短信不足

    103 操作失败

    104 非法字符

    105 内容过多

    106 号码过多

    107 频率过快

    108 号码内容空

    109 账号冻结

    110 禁止频繁单条发送

    111 系统暂定发送

    112 号码不正确

    120 系统升级

--------------------------------*/

$uid='9999';     //用户账号

$pwd='9999';     //密码

$mobile ='13912341234,13312341234,13512341234,02122334444';  //号码

$content='中国短信网PHP HTTP接口';      //内容

//即时发送

$res= sendSMS($uid,$pwd,$mobile,$content);

echo$res;

//定时发送

/*

$time = '2010-05-27 12:11';

$res = sendSMS($uid,$pwd,$mobile,$content,$time);

echo $res;

*/

functionsendSMS($uid,$pwd,$mobile,$content,$time='',$mid='')

{

    $http='http://http.c123.com/tx/';

    $data=array

        (

        'uid'=>$uid,                //用户账号

        'pwd'=>strtolower(md5($pwd)),   //MD5位32密码

        'mobile'=>$mobile,              //号码

        'content'=>$content,        //内容

        'time'=>$time,      //定时发送

        'mid'=>$mid                     //子扩展号

        );

    $re= postSMS($http,$data);         //POST方式提交

    if( trim($re) =='100')

    {

        return"发送成功!";

    }

    else

    {

        return"发送失败! 状态：".$re;

    }

}

functionpostSMS($url,$data='')

{

    $row=parse_url($url);

    $host=$row['host'];

    $port=$row['port'] ?$row['port']:80;

    $file=$row['path'];

    while(list($k,$v) = each($data))

    {

        $post.= rawurlencode($k)."=".rawurlencode($v)."&";//转URL标准码

    }

    $post=substr($post, 0 , -1 );

    $len=strlen($post);

    $fp= @fsockopen($host,$port,$errno,$errstr, 10);

    if(!$fp) {

        return"$errstr ($errno)n";

    }else{

        $receive='';

        $out="POST $file HTTP/1.1rn";

        $out.="Host: $hostrn";

        $out.="Content-type: application/x-www-form-urlencodedrn";

        $out.="Connection: Closern";

        $out.="Content-Length: $lenrnrn";

        $out.=$post;     

        fwrite($fp,$out);

        while(!feof($fp)) {

            $receive.=fgets($fp, 128);

        }

        fclose($fp);

        $receive=explode("rnrn",$receive);

        unset($receive[0]);

        returnimplode("",$receive);

    }

}

?>