gistfile1.txt

$trie = new Trie();
$start = microtime(true);
for ( $i = 0 ; $i < 20000000 ; $i++ ) {
    $sid = bin2hex(openssl_random_pseudo_bytes(8));
        $collision = $trie->search($sid) ; 
    if ( is_null($collision) ) {
        $trie->add($sid, 1);
    } else {
        echo "\n" ."Collision with previous Hash" ."\n" ;
    }
}

$time_elapsed_secs = microtime(true) - $start;
echo "\n" . " Time Elapsed :" . $time_elapsed_secs . "\n" ;