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-rw-r--r--system/helpers/date_helper.php4
1 files changed, 2 insertions, 2 deletions
diff --git a/system/helpers/date_helper.php b/system/helpers/date_helper.php
index 0fa400d7e..7a0552b0b 100644
--- a/system/helpers/date_helper.php
+++ b/system/helpers/date_helper.php
@@ -677,8 +677,8 @@ if ( ! function_exists('date_range'))
$is_unix = ! ( ! $is_unix OR $is_unix === 'days');
// Validate input and try strtotime() on invalid timestamps/intervals, just in case
- if ( ( ! preg_match('/^[0-9]+$/', $unix_start) && ($unix_start = @strtotime($unix_time)) === FALSE)
- OR ( ! preg_match('/^[0-9]+$/', $mixed) && ($is_unix === FALSE OR ($mixed = @strtotime($mixed)) === FALSE))
+ if ( ( ! ctype_digit((string) $unix_start) && ($unix_start = @strtotime($unix_time)) === FALSE)
+ OR ( ! ctype_digit((string) $mixed) && ($is_unix === FALSE OR ($mixed = @strtotime($mixed)) === FALSE))
OR ($is_unix === TRUE && $mixed < $unix_start))
{
return FALSE;