Program PHP development uses snoopy to simulate logging in to other websites with verification codes.

Realization requirements:
Get the session ID and verification code image of station A through snoopy, and display the login form on your website. After submission, snoopy submits the input information to station A to log in, and obtains the information inside for analysis.
(PS: ^_^Good php development learning exchange group: 256271784, verification: cxy, if you are interested, you can join and discuss together)
Get verification code and sessionid:

//Get the picture
$snoopy->fetch('http://www.a.com/imgcode.gif');
//Analyze the sessionid from the header information
preg_match ('/JSESSIONID=([w]+);/', $snoopy->headers[2],$sessionid);
$jsessionid=$sessionid[1];
$imgcode=base64_encode($snoopy- >results);
//Display login form
?>


 










Password< ;/th>







Verification code

Submit the form information to station A and display the post-login page:

$snoopy->cookies['JSESSIONID']=post('jsessionid');
$snoopy->submit('http://www.a.com/signin.html', $_POST);
echo $snoopy->results;

Summary of tips:
The obtained image binary code can be directly used in the src attribute of img through base64 encoding