diff options
| author | George Petculescu <gxgpet@gmail.com> | 2016-09-25 18:52:58 +0200 |
|---|---|---|
| committer | George Petculescu <gxgpet@gmail.com> | 2016-09-25 18:52:58 +0200 |
| commit | fd8d3987226bcde81db0682eee9c9acca0beb9a1 (patch) | |
| tree | 44ac431f2db34c8bc46790806d0338553d8fd226 | |
| parent | 4b94152a48d8053ab72669278abfec18e1793310 (diff) | |
- captcha helper uses now filemtime to get file timestamp
- captcha generated files are a sha1 of current timestamp and word
- changed the usage of microtime to time, as this is a more realistic approach
Signed-off-by: George Petculescu <gxgpet@gmail.com>
| -rw-r--r-- | system/helpers/captcha_helper.php | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php index 3c1e006f8..c2a1dcfbd 100644 --- a/system/helpers/captcha_helper.php +++ b/system/helpers/captcha_helper.php @@ -105,12 +105,13 @@ if ( ! function_exists('create_captcha')) // Remove old images // ----------------------------------- - $now = microtime(TRUE); + $now = time(); $current_dir = @opendir($img_path); while ($filename = @readdir($current_dir)) { - if (substr($filename, -4) === '.jpg' && (str_replace('.jpg', '', $filename) + $expiration) < $now) + if (in_array(substr($filename, -4), array('.jpg', '.png')) + && (filemtime($img_path.$filename) + $expiration) < $now) { @unlink($img_path.$filename); } @@ -319,12 +320,12 @@ if ( ! function_exists('create_captcha')) if (function_exists('imagejpeg')) { - $img_filename = $now.'.jpg'; + $img_filename = sha1($now.$word).'.jpg'; imagejpeg($im, $img_path.$img_filename); } elseif (function_exists('imagepng')) { - $img_filename = $now.'.png'; + $img_filename = sha1($now.$word).'.png'; imagepng($im, $img_path.$img_filename); } else |