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<?php $aTest = array('apple', 'pineapple', 'banana', 'kiwi', 'pear', 'strawberry', '1234', '#qwerty', '!qwerty'); $range = range('A','Z'); $range[] = "#"; $output = array(); foreach($aTest AS $fruit){ $uc = ucfirst($fruit); if(array_search($uc[0], $range) === FALSE){ $output['#'][] = $uc; } else { $output[$uc[0]][] = $uc; } } print_r($output);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [A] => Array ( [0] => Apple ) [P] => Array ( [0] => Pineapple [1] => Pear ) [B] => Array ( [0] => Banana ) [K] => Array ( [0] => Kiwi ) [S] => Array ( [0] => Strawberry ) [#] => Array ( [0] => 1234 [1] => #qwerty [2] => !qwerty ) )

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