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<?php $input = <<< TXT Blah Diddel Foo Bar1 Bar2 One XXY Password%1 = something Password%2 = other Password%3 = nuffing Completely different stuff here RandomS6}=2 User%1 = Henry User%2 = Marcus User%3 = SecretAdmin More stuff Even more stuff Loads of stuff TXT; $matches = []; $string = preg_replace_callback( '~^(?>User.+|Password.+|XXY)$~m', function ($match) use (&$matches) { @$matches[substr($match[0], 0, 4)] .= $match[0].PHP_EOL; return null; }, $input ); print_r(array_merge($matches, preg_split('/^\s+$/m', $string)));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [XXY] => XXY [Pass] => Password%1 = something Password%2 = other Password%3 = nuffing [User] => User%1 = Henry User%2 = Marcus User%3 = SecretAdmin [0] => Blah Diddel Foo Bar1 Bar2 One [1] => Completely different stuff here RandomS6}=2 [2] => More stuff Even more stuff Loads of stuff )

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