Online PHP editor | refs for jGmdV

<?php /** * test that filemtime() returns Unix timestamp (UTC) on current system */ $nowHour = isset($_SERVER['REQUEST_TIME']) ? $_SERVER['REQUEST_TIME'] : time(); $hostname = php_uname('n'); $formatRfc = 'D, d M Y H:i:s O'; $timestampStartOfUnixEpoch = 0; // start of the Unix epoch. $timestampRequest = 3600 * (int)($nowHour / 3600); $testFile = sprintf('%s/%s', php_sys_get_temp_dir(), 'test-filemtime'); if ($hostname !== 'php_shell') { printf("PHP version is %s and OS is %s\n", PHP_VERSION, PHP_OS); } printf("Testfile is '%s'.\n", $testFile); touch($testFile, $timestampStartOfUnixEpoch); php_clearstatcache(false, $testFile); $mtime = filemtime($testFile); printf("Testfile '%s' mtime should be from touch %d, is %d.\n", basename($testFile), $timestampStartOfUnixEpoch, $mtime); printf("The mtime represents %s\n", date($formatRfc, $mtime)); touch($testFile, $timestampRequest); php_clearstatcache(false, $testFile); $mtime = filemtime($testFile); printf("Testfile '%s' mtime should be from touch %d, is %d.\n", basename($testFile), $timestampRequest, $mtime); printf("The mtime represents %s\n", date($formatRfc, $mtime)); unlink($testFile); /** * NOTE: This function is incomplete, the fallback is to '/tmp' which targets Unix-like. * * @return string */ function php_sys_get_temp_dir() { // (PHP 5 >= 5.2.1) if (function_exists('sys_get_temp_dir')) { return sys_get_temp_dir(); } // (PHP 4 >= 4.3.0, PHP 5) if (function_exists('stream_get_meta_data')) { $handle = tmpfile(); // (PHP 4, PHP 5) $meta = stream_get_meta_data($handle); // (PHP 5 >= 5.1.0) if (isset($meta['uri'])) { return dirname($meta['uri']); } } // emulate PHP 4 <= 4.0.6 tempnam() behavior, fragile foreach(array('TMPDIR', 'TMP') as $key) { if (isset($_ENV[$key])) { return $_ENV[$key]; } } // fallback for Unix-like (php_shell specifically) return '/tmp'; } /** * @param $clear_realpath_cache * @param $filename * @link http://php.net/manual/en/function.version-compare.php */ function php_clearstatcache($clear_realpath_cache, $filename) { if (version_compare(PHP_VERSION, '5.3.0') >= 0) { clearstatcache($clear_realpath_cache, $filename); } else { clearstatcache(); } }