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<?php $case = '2 s foo'; function test($case) { $reg1 = <<<'REGEX' / ^ (?<int> (?:\G|(?!\n)) \s*\b \d{1,5} \s* )\K (?<timepart> (?: s | m | h | d ) \b ) (?=(?<string>.+)$) /uix REGEX; $out = preg_replace_callback ($reg1, function($matches){ switch($matches['timepart']){ case 's': $m = 'sec'; break; case 'm': $m = 'min'; break; case 'h': $m = 'hr'; break; case 'd': $m = 'day'; break; } return $m; }, $case); return $out; } $output = test($case); print_r($output);
Output for git.master, git.master_jit, rfc.property-hooks
2 sec foo

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