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<?php $strings = [ 'the(crow)bar', 'foo()bar', 'handlebar()', '()foofighters', '(foobar)', '()', 'barfood', 'barf(oo', 'fooeybar)', ')foob(', ]; function findFirstStringInBracket($str){ if(strlen($str) > 0){ $firstbracket = strstr($str, '('); if($firstbracket){ $firstbracket = ltrim($firstbracket, '('); return strstr($firstbracket, ')', true); }else{ return ''; } }else{ return ''; } } $result = []; foreach ($strings as $string) { $result[$string] = findFirstStringInBracket($string); } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 'the(crow)bar' => 'crow', 'foo()bar' => '', 'handlebar()' => '', '()foofighters' => '', '(foobar)' => 'foobar', '()' => '', 'barfood' => '', 'barf(oo' => false, 'fooeybar)' => '', ')foob(' => false, )

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