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<?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); $tempDir = function_exists('sys_get_temp_dir') ? sys_get_temp_dir() : '/tmp'; $testFile = sprintf('%s/%s', $tempDir, 'test-filemtime'); if ($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); /** * @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(); } }
Output for 5.4.0 - 5.4.17, 5.4.19 - 5.4.25, 5.4.27 - 5.4.43, 5.4.45, 5.5.0 - 5.5.5, 5.5.7 - 5.5.16, 5.5.18 - 5.5.38, 5.6.0 - 5.6.7, 5.6.9 - 5.6.40, 7.0.0 - 7.0.2, 7.0.4 - 7.0.22, 7.0.24 - 7.0.25, 7.0.27 - 7.0.29, 7.0.31 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.24, 7.2.26, 7.3.0 - 7.3.12, 7.4.0 - 7.4.1
Testfile is '/tmp/test-filemtime'. Testfile 'test-filemtime' mtime should be from touch 0, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200 Testfile 'test-filemtime' mtime should be from touch 1408896000, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200
Output for 5.5.17, 7.0.23, 7.0.26, 7.2.25, 7.3.13
Testfile is '/tmp/test-filemtime'. Testfile 'test-filemtime' mtime should be from touch 0, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200 Warning: filemtime(): stat failed for /tmp/test-filemtime in /in/6VDvn on line 29 Testfile 'test-filemtime' mtime should be from touch 1408896000, is 0. The mtime represents Thu, 01 Jan 1970 01:00:00 +0100 Warning: unlink(/tmp/test-filemtime): No such file or directory in /in/6VDvn on line 33
Output for 5.4.18, 5.4.44, 5.5.6, 5.6.8, 7.0.30
Testfile is '/tmp/test-filemtime'. Testfile 'test-filemtime' mtime should be from touch 0, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200 Testfile 'test-filemtime' mtime should be from touch 1408896000, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200 Warning: unlink(/tmp/test-filemtime): No such file or directory in /in/6VDvn on line 33
Output for 7.0.3
Testfile is '/tmp/test-filemtime'. Warning: filemtime(): stat failed for /tmp/test-filemtime in /in/6VDvn on line 23 Testfile 'test-filemtime' mtime should be from touch 0, is 0. The mtime represents Thu, 01 Jan 1970 01:00:00 +0100 Testfile 'test-filemtime' mtime should be from touch 1408896000, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200
Output for 5.4.26
Testfile is '/tmp/test-filemtime'. Warning: touch(): Utime failed: No such file or directory in /in/6VDvn on line 21 Warning: filemtime(): stat failed for /tmp/test-filemtime in /in/6VDvn on line 23 Testfile 'test-filemtime' mtime should be from touch 0, is 0. The mtime represents Thu, 01 Jan 1970 01:00:00 +0100 Testfile 'test-filemtime' mtime should be from touch 1408896000, is 1408898104. The mtime represents Sun, 24 Aug 2014 18:35:04 +0200
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Testfile is '/tmp/test-filemtime'. Testfile 'test-filemtime' mtime should be from touch 0, is 0. The mtime represents Thu, 01 Jan 1970 01:00:00 +0100 Testfile 'test-filemtime' mtime should be from touch 1408896000, is 1408896000. The mtime represents Sun, 24 Aug 2014 18:00:00 +0200
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