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This article is about how php can send CAPTCHA. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Php to achieve the function of sending CAPTCHA: 1, create a good HTML and js files; 2, create a "Msm.php" file, the content is "public function sendmsm () {...}"; 3, send a HTTP request through CURL.

This article operating environment: Windows7 system, PHP7.1 version, DELL G3 computer

How does php achieve the function of sending CAPTCHA?

PHP implements sending SMS verification code:

1. Html code

Mobile phone number: CAPTCHA: get CAPTCHA

II. Js code

/ * send verification code * @ return {[type]} [description] * / function get_svg () {var phone = $("input [name = 'telephone']") .val (); if (! (/ ^ 1 [34578]\ d {9} $/ .test (phone) {layer.msg ("Please enter your cell phone number correctly!") ; return false;} var url = "/ msm/sendmsm/phone/" + phone;$.get (url, function (resdata) {console.log (resdata); layer.msg (resdata.data); if (resdata.type = = 1) {$(".code _ btn"). Attr ('onclick', "return false;"); listion_sendmsm ();}) return false;} function listion_sendmsm () {var time = 61 SetTime = setInterval (function () {if (time $conf ['msm_appkey'],' password' = > $conf ['msm_secretkey'],' msg' = > urlencode ($content), 'phone' = > $telephone,'report' = > true); $result = $this- > curlPost ("http://smssh2.253.com/msg/send/json", $postArr); $json = json_decode ($result); if ($json-> code! = 0) {return false;} else {return true }} / * send HTTP request via CURL * @ param string $url / / request URL * @ param array $postFields / / request parameters * @ return mixed * * / private function curlPost ($url,$postFields) {$postFields = json_encode ($postFields); $ch = curl_init (); curl_setopt ($ch, CURLOPT_URL, $url); curl_setopt ($ch, CURLOPT_HTTPHEADER, array ('Content-Type: application/json) Charset=utf-8' / / json version requires Content-Type: application/json;); curl_setopt ($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_POST, 1); curl_setopt ($ch, CURLOPT_POSTFIELDS, $postFields); curl_setopt ($ch, CURLOPT_TIMEOUT,60); curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0); curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0) $ret = curl_exec ($ch); if (false = = $ret) {$result = curl_error ($ch);} else {$rsp = curl_getinfo ($ch, CURLINFO_HTTP_CODE); if (200! = $rsp) {$result = "request status". $rsp. "". Curl_error ($ch);} else {$result = $ret;}} curl_close ($ch); return $result;}

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