How to get file_get_contents() to work with HTTPS?


Question

I'm working on setting up credit card processing and needed to use a workaround for CURL. The following code worked fine when I was using the test server (which wasn't calling an SSL URL), but now when I am testing it on the working server with HTTPS, it's failing with the error message "failed to open stream".

function send($packet, $url) {
  $ctx = stream_context_create(
    array(
      'http'=>array(
        'header'=>"Content-type: application/x-www-form-urlencoded",
        'method'=>'POST',
        'content'=>$packet
      )
    )
  );
  return file_get_contents($url, 0, $ctx);
}
1
99
2/17/2019 11:48:40 AM

Accepted Answer

Try the following script to see if there is an https wrapper available for your php scripts.

$w = stream_get_wrappers();
echo 'openssl: ',  extension_loaded  ('openssl') ? 'yes':'no', "\n";
echo 'http wrapper: ', in_array('http', $w) ? 'yes':'no', "\n";
echo 'https wrapper: ', in_array('https', $w) ? 'yes':'no', "\n";
echo 'wrappers: ', var_export($w);

the output should be something like

openssl: yes
http wrapper: yes
https wrapper: yes
wrappers: array(11) {
  [...]
}
87
7/24/2016 4:23:58 AM

To allow https wrapper:

  • the php_openssl extension must exist and be enabled
  • allow_url_fopen must be set to on

In the php.ini file you should add this lines if not exists:

extension=php_openssl.dll

allow_url_fopen = On

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