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<?php function perfect_time($time) { $time = strtotime($time); return is_numeric($time) && $time >= 1 ? $time - strtotime("now") : false; } function zone2time($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 git.master, git.master_jit, rfc.property-hooks
int(-19800)

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