The regex in http_digest_parse from Example #2 does not work for me (PHP 5.2.6), because back references are not allowed in a character class. This worked for me:
<?php
function http_digest_parse($txt)
{
$needed_parts = array('nonce'=>1, 'nc'=>1, 'cnonce'=>1, 'qop'=>1, 'username'=>1, 'uri'=>1, 'response'=>1);
$data = array();
preg_match_all('@(\w+)=(?:(?:\'([^\']+)\'|"([^"]+)")|([^\s,]+))@', $txt, $matches, PREG_SET_ORDER);
foreach ($matches as $m) {
$data[$m[1]] = $m[2] ? $m[2] : ($m[3] ? $m[3] : $m[4]);
unset($needed_parts[$m[1]]);
}
return $needed_parts ? false : $data;
}
?>
