- ini_get: documentation ( source)
- http_build_query: documentation ( source)
<?php
$data = array(
'secret' => 'value_secret',
'response' => 'value_response',
);
echo ini_get('arg_separator.output') ."\n";
echo http_build_query($data) ."\n";
echo http_build_query($data, null, '&') ."\n";