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Validate if a Unix timestamp is valid.
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| /** | |
| * Validate if a Unix timestamp is valid. | |
| * | |
| * @param $unixtimestamp | |
| * @return bool | |
| */ | |
| function datetime_IsUnixTimeStampValid($unixtimestamp) { | |
| // | |
| // | |
| /////////////////////////////////////////////////////////////////////// | |
| // Validate Date is between start and end of 32-bit Unix timestamps | |
| // ref: https://stackoverflow.com/a/4684066/797620 | |
| /////////////////////////////////////////////////////////////////////// | |
| // | |
| if ( !filter_var($unixtimestamp, FILTER_VALIDATE_INT, ['options' => ['min_range' => (int)0, 'max_range' => (int)2147483647]]) ) { | |
| // | |
| return false; | |
| // | |
| } | |
| // | |
| // | |
| /////////////////////////////////////////////////////////////////////// | |
| // Validate | |
| // ref: https://stackoverflow.com/a/2524761/797620 | |
| /////////////////////////////////////////////////////////////////////// | |
| // | |
| return ((string) (int) $unixtimestamp === $unixtimestamp) && ($unixtimestamp <= PHP_INT_MAX)&& ($unixtimestamp >= ~PHP_INT_MAX); | |
| // | |
| } |
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Test and check unix time stamp in php