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mtime: modified time

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Get modified time of a directory or file. For directories: it gets the modified time of the most recently modified file.

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  1. /**
  2.  * mtime()  Get the modified time of a directory or file. For directories,
  3.  *          it gets the modified time of the most recently modified file.
  4.  *
  5.  * @param   string       $path     Full path to directory or file.
  6.  * @param   string       $format   Date string for use with date()
  7.  * @return  number|string|null
  8.  */
  9. function mtime ( $path, $format = null  ) {
  10.     $time = null;
  11.     if ( \is_string($path) && \is_readable($path) ) {
  12.         if ( \is_dir($path) ) {
  13.             $path = \rtrim($path, '/');
  14.             foreach ( \scandir($path) as $file ) {
  15.                 if ( '.' !== \substr($file, 0, 1) ) {
  16.                     $temp = mtime($path . '/' . $file);
  17.                     $temp > $time and $time = $temp;
  18.                 }
  19.             }
  20.         } elseif ( \file_exists($path) ) {
  21.             $time = \filemtime($path);
  22.         }
  23.     }
  24.     return $time && $format ? \date($format, $time) : $time;
  25. }

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