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@ 2014-08-24T15:58:00Z

<?php
/**
 * test that filemtime() returns Unix timestamp (UTC) on current system
 */

$timestampStartOfUnixEpoch = 0; // start of the Unix epoch.
$timestampRequest          = 3600 * (int) ($_SERVER['REQUEST_TIME'] / 3600);

$testFile = sprintf('%s/%s', sys_get_temp_dir(), 'test-filemtime');

printf("Testfile is '%s'.\n", $testFile);

touch($testFile, $timestampStartOfUnixEpoch);
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('r', $mtime));

touch($testFile, $timestampRequest);
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('r', $mtime));

unlink($testFile);

Output for git.master, git.master_jit, rfc.property-hooks: Testfile is '/tmp/test-filemtime'. Testfile 'test-filemtime' mtime should be from touch 0, is 1408895880. The mtime represents Sun, 24 Aug 2014 17:58:00 +0200 Testfile 'test-filemtime' mtime should be from touch 1408892400, is 1408895880. The mtime represents Sun, 24 Aug 2014 17:58:00 +0200

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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