gistfile1.txt

<?php

$timeStart = microtime(true); 

for ($i=0; $i<1000; $i++) {
	//glob('./data/4cc3b5c1ba9d60706f182f7960b1266a_75_75_fit_c_0_85.{dat,png,gif}', GLOB_BRACE);

	if (file_exists('./data/4cc3b5c1ba9d60706f182f7960b1266a_75_75_fit_c_0_85.dat')) {

	} else if (file_exists('./data/4cc3b5c1ba9d60706f182f7960b1266a_75_75_fit_c_0_85.png')) {

	} else if (file_exists('./data/4cc3b5c1ba9d60706f182f7960b1266a_75_75_fit_c_0_85.gif')) {

	}
}

$timeEnd = microtime(true);
$execTime = ($timeEnd - $timeStart);
echo $execTime . " msec\n";

// glob
// 0.0032610893249512 msec
// 0.003046989440918 msec
// 0.0030860900878906 msec

// file_exists
// 0.00088906288146973 msec
// 0.00088000297546387 msec
// 0.00087404251098633 msec