file_get_contents-vs-curl.php

<?php

$urls = [
    'http://www.flickr.com/services/feeds/photos_public.gne',
    'https://i.stack.imgur.com/fgwQf.jpg',
    'https://api.wordpress.org/secret-key/1.1/salt/',
    'http://gabrielw.de',
    'https://google.com',
    'https://raw.githubusercontent.com/CodeBrauer/gmod-loadingscreen/master/img/bg.jpg',
];

$runs = 10;

for ($i=1; $i <= $runs; $i++) { 
    foreach ($urls as $url) {
        /** file_get_contents */
        $start_fgc = microtime(true);
        echo "($i/$runs/#1) Getting ".str_pad(substr($url, 0, 30), 30, ' ')."\r";
        $data      = file_get_contents($url);
        $stop_fgc  = microtime(true);

        $results[$url]['file_get_contents'][] = $stop_fgc - $start_fgc;

        /** curl */
        $start_curl = microtime(true);
        $ch = curl_init();
        $options = [
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_URL            => $url,
        ];

        echo "($i/$runs/#2) Getting ".str_pad(substr($url, 0, 30), 30, ' ')."\r";
        curl_setopt_array($ch, $options);
        $data = json_decode(curl_exec($ch));
        curl_close($ch);
        $stop_curl  = microtime(true);
        $results[$url]['curl'][] = $stop_curl - $start_curl;
    }
}

echo PHP_EOL . '== RESULTS =====================================' . PHP_EOL; 
echo "URL                            | fgc    | curl" . PHP_EOL;
foreach ($results as $url => $results) {
    $avg_curl = number_format( array_sum($results['curl']) / count($results['curl']), 4 );
    $avg_fgc = number_format( array_sum($results['file_get_contents']) / count($results['file_get_contents']), 4 );
    
    echo str_pad(substr($url, 0, 30), 30, ' ') . " | $avg_curl | $avg_fgc" . PHP_EOL;
}