cURL不工作 - PHP

Question

I want to connect this site ( https://ais.usvisa-info.com/en-ae/niv/users/sign_in ) with cURL in PHP but blank screen is displayed and no error. where is the problem?

Thanks

CODE:

<?php
function login($url, $data){
    $fp = fopen("cookie.txt", "w");
    fclose($fp);
    $login = curl_init();
    curl_setopt($login, CURLOPT_COOKIEJAR, "cookie.txt");
    curl_setopt($login, CURLOPT_COOKIEFILE, "cookie.txt");
    curl_setopt($login, CURLOPT_TIMEOUT, 40000);
    curl_setopt($login, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($login, CURLOPT_URL, $url);
    curl_setopt($login, CURLOPT_FOLLOWLOCATION, TRUE);
    curl_setopt($login, CURLOPT_POST, TRUE);
    curl_setopt($login, CURLOPT_POSTFIELDS, $data);
    ob_start();
    return curl_exec ($login);
    ob_end_clean();
    curl_close ($login);
    unset($login);
}
?>

<?php
    echo login("https://ais.usvisa-info.com/en-ae/niv/users/sign_in", 'utf8=✓&authenticity_token=TEST&user[email]=test@yss.com&user[password]=12345&recaptcha_challenge_field=TEST&recaptcha_response_field=TEST&commit=Sing In');
?>

Answer 1

You are echoing out the result of login. login returns curl_exec($login). Since you called curl_setopt($login, CURLOPT_RETURNTRANSFER, TRUE); , it will return the result on success and FALSE on failure. The result is probably an empty string if you do not have an error (take a look at the server logs to be sure).

Read more about the return value here .

By the way, return finishes the function and any further lines after that are completely irrelevant. Please, store the result of curl_exec into a local variable and return that at the end of the function .