strtotime and checking if valid timestamp

Question

I am experiencing an issue with strtotime.

$data['task_time_due'] = strtotime("+1 day");

This returns false..

$this->Utility->is_timestamp_valid($data['task_time_due'])

Utility.php..

function is_timestamp_valid($timestamp)
{
    return ((string) (int) $timestamp === $timestamp) 
    && ($timestamp <= PHP_INT_MAX)
    && ($timestamp >= ~PHP_INT_MAX);
}

Anyone know why? This function works great throughout my application.

Why are you casting the return of your function by both `string` **and** `int`? — D4V1D, Mar 27 '15 at 14:58
Because of this http://stackoverflow.com/questions/2524680/check-whether-the-string-is-a-unix-timestamp — Leonard Washington, Mar 27 '15 at 14:59
Have you set the default timezone setting in `php.ini` or with `date_default_timezone_set()`? — D4V1D, Mar 27 '15 at 15:00

score 0 · Accepted Answer · answered Mar 27 '15 at 15:10

0

'Cause strtotime returns int and you are comparing it strictly with string. Change this (string) (int) $timestamp === $timestamp to this (int)(string) $timestamp === $timestamp

answered Mar 27 '15 at 15:10

David Kmenta

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strtotime and checking if valid timestamp

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