file_get_contents with fallback to cURL

fetchUrl.php

<?php
function fetchUrl($url) {
    $allowUrlFopen = preg_match('/1|yes|on|true/i', ini_get('allow_url_fopen'));
    if ($allowUrlFopen) {
        return file_get_contents($url);
    } elseif (function_exists('curl_init')) {
        $c = curl_init($url);
        curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
        $contents = curl_exec($c);
        curl_close($c);
        if (is_string($contents)) {
            return $contents;
        }
    }
    return false;
}