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<?php function perfect_time($time) { return strtotime($time) - time(); } function zone2time($zone_offset) { return @preg_match("/^([\\+\\-]{1})?([0-9]{1,2}):([0-9]{1,2})$/i", preg_replace("/[a-z\\s]+/", null, strtolower($zone_offset)), $out) ? perfect_time("{$out[2]} Hours {$out[3]} Mins" . ($out[1] === "-" ? " ago" : null)) : false; } var_dump(zone2time(" GMT 05 : 30 "));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.6
int(19800)
Output for 5.0.0 - 5.0.2
int(-30289)

preferences:
159.75 ms | 401 KiB | 214 Q