Online PHP editor | output for TI4eA

<?php $tests = [ 'bar 3 m foo', # - 'bass drop 2 d bare', # - '2 3 m foo foo', # - '1 222 4 d baz', # - '5d 4h 3m 2s', # - '5 days 4 minutes', # - '9w8d7h6m5s', # - '2 d 3 m baz', # + '5d 4h 3m 2s foo', # + '2 s foo', # + '222 h baz bar', # + '1 mon foo', # + mon for month? '1w bar', # + '1 month baz', # + '2 months foobar', # + '4 months 2 months foo', # + repeating same string is allowed by strtotime, though it sums up https://3v4l.org/FIgNC '5m3s bar', # + '7mon6w5d4h3m2s bazinga!', # + '3 seconds 5 hours 5 minutes jeeey hoe :D damn I should sleep...' # + ]; /* * Replaces (s|m|h|d|w|mon) with strtotime compatible abbreviations * * It *should* allow these: https://gist.github.com/DaveRandom/625fb4bf73112474fb5768a0a300e4e5 * * NOTE: Below regex...uh, specially the (?&str) bit probably sucks... * * @param array $tests * @return array */ function normalizeTimeSpec($tests) { $reg1 = <<<'REGEX' ~ \s? (?<int> \d{1,5}) \s? (?<time> (?: s (?=(?:ec(?:ond)?s?)?(?:\b|\d)) | m (?=(?:in(?:ute)?s?)?(?:\b|\d)) | h (?=(?:(?:ou)?rs?)?(?:\b|\d)) | d (?=(?:ays?)?(?:\b|\d)) | w (?=(?:eeks?)?(?:\b|\d)) | mon (?=(?:(?:th)?s?)?(?:\b|\d)) ) ) [^\d]*?(?=\b|\d) # do only extract start of string | .+ (*SKIP) ~uix REGEX; $array = []; foreach($tests as $case){ $output = preg_replace_callback ($reg1, function($matches){ if (!isset($matches['int'])) { return ''; } switch($matches['time']){ case 's': $t = ' sec '; break; case 'm': $t = ' min '; break; case 'h': $t = ' hour '; break; case 'd': $t = ' day '; break; case 'w': $t = ' week '; break; case 'mon': $t = ' month '; break; } return $matches['int'].$t; }, $case); $array[] = $output; } return $array; } /* * Test whether given time string passes regex rules (and show the matches array) * This is mainly for Reminders plugin where we allow trailing (but not leading) strings * * @param array $tests * @return array */ function testTimeSpec($tests){ $finalArray = []; # I saw another solution given by @bwoebi - https://3v4l.org/6BoW1 # However that doesn't fail any longer than "5 months 4 weeks" see ^ # pretty sure these can be improved (but it's late and I can't regex any more now...) $regex = <<<'REGEX' /(?(DEFINE) (?<int> (\s*\b)? (\d{1,5})? (\s*)? ) (?<timepart> (?&int) ( s(ec(ond)?s?)? | m(in(ute)?s?|onths?)? | h(rs?|ours?)? | d(ays?)? | w(eeks?)? ) \b ) ) ^(?<time> (?:(?&timepart)(*SKIP).)+ ) (?<string>.+)$ /uix REGEX; foreach($tests as $case){ if(preg_match($regex, $case, $matches)){ $finalArray[] = $matches['time'].$matches['string']; } } return $finalArray; } $normalized = normalizeTimeSpec($tests); $output = testTimeSpec(normalizeTimeSpec($tests)); print_r($normalized); print_r($output);