[php] PHP CURL & HTTPS

I found this function that does an AWESOME job (IMHO): http://nadeausoftware.com/articles/2007/06/php_tip_how_get_web_page_using_curl

/**
 * Get a web file (HTML, XHTML, XML, image, etc.) from a URL.  Return an
 * array containing the HTTP server response header fields and content.
 */
function get_web_page( $url )
{
    $options = array(
        CURLOPT_RETURNTRANSFER => true,     // return web page
        CURLOPT_HEADER         => false,    // don't return headers
        CURLOPT_FOLLOWLOCATION => true,     // follow redirects
        CURLOPT_ENCODING       => "",       // handle all encodings
        CURLOPT_USERAGENT      => "spider", // who am i
        CURLOPT_AUTOREFERER    => true,     // set referer on redirect
        CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
        CURLOPT_TIMEOUT        => 120,      // timeout on response
        CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
    );

    $ch      = curl_init( $url );
    curl_setopt_array( $ch, $options );
    $content = curl_exec( $ch );
    $err     = curl_errno( $ch );
    $errmsg  = curl_error( $ch );
    $header  = curl_getinfo( $ch );
    curl_close( $ch );

    $header['errno']   = $err;
    $header['errmsg']  = $errmsg;
    $header['content'] = $content;
    return $header;
}

The only problem I have is that it doesn't work for https://. Anny ideas what I need to do to make this work for https? Thanks!

This question is related to php curl https

The answer is


One important note, the solution mentioned above will not work on local host, you have to upload your code to server and then it will work. I was getting no error, than bad request, the problem was I was using localhost (test.dev,myproject.git). Both solution above work, the solution that uses SSL cert is recommended.

  1. Go to https://curl.haxx.se/docs/caextract.html, download the latest cacert.pem. Store is somewhere (not in public folder - but will work regardless)

  2. Use this code

".$result; //echo "
Path:".$_SERVER['DOCUMENT_ROOT'] . "/ssl/cacert.pem"; // this is for troubleshooting only ?>
  1. Upload the code to live server and test.

I was trying to use CURL to do some https API calls with php and ran into this problem. I noticed a recommendation on the php site which got me up and running: http://php.net/manual/en/function.curl-setopt.php#110457

Please everyone, stop setting CURLOPT_SSL_VERIFYPEER to false or 0. If your PHP installation doesn't have an up-to-date CA root certificate bundle, download the one at the curl website and save it on your server:

http://curl.haxx.se/docs/caextract.html

Then set a path to it in your php.ini file, e.g. on Windows:

curl.cainfo=c:\php\cacert.pem

Turning off CURLOPT_SSL_VERIFYPEER allows man in the middle (MITM) attacks, which you don't want!


Another option like Gavin Palmer answer is to use the .pem file but with a curl option

  1. download the last updated .pem file from https://curl.haxx.se/docs/caextract.html and save it somewhere on your server(outside the public folder)

  2. set the option in your code instead of the php.ini file.

In your code

curl_setopt($ch, CURLOPT_CAINFO, $_SERVER['DOCUMENT_ROOT'] .  "/../cacert-2017-09-20.pem");

NOTE: setting the cainfo in the php.ini like @Gavin Palmer did is better than setting it in your code like I did, because it will save a disk IO every time the function is called, I just make it like this in case you want to test the cainfo file on the fly instead of changing the php.ini while testing your function.


Examples related to php

I am receiving warning in Facebook Application using PHP SDK Pass PDO prepared statement to variables Parse error: syntax error, unexpected [ Preg_match backtrack error Removing "http://" from a string How do I hide the PHP explode delimiter from submitted form results? Problems with installation of Google App Engine SDK for php in OS X Laravel 4 with Sentry 2 add user to a group on Registration php & mysql query not echoing in html with tags? How do I show a message in the foreach loop?

Examples related to curl

What is the incentive for curl to release the library for free? curl: (35) error:1408F10B:SSL routines:ssl3_get_record:wrong version number Converting a POSTMAN request to Curl git clone error: RPC failed; curl 56 OpenSSL SSL_read: SSL_ERROR_SYSCALL, errno 10054 How to post raw body data with curl? Curl : connection refused How to use the curl command in PowerShell? Curl to return http status code along with the response How to install php-curl in Ubuntu 16.04 curl: (35) SSL connect error

Examples related to https

What's the net::ERR_HTTP2_PROTOCOL_ERROR about? Requests (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.") Error in PyCharm requesting website Android 8: Cleartext HTTP traffic not permitted ssl.SSLError: tlsv1 alert protocol version Invalid self signed SSL cert - "Subject Alternative Name Missing" How do I make a https post in Node Js without any third party module? Page loaded over HTTPS but requested an insecure XMLHttpRequest endpoint How to force Laravel Project to use HTTPS for all routes? Could not create SSL/TLS secure channel, despite setting ServerCertificateValidationCallback Use .htaccess to redirect HTTP to HTTPs