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<?php $text = <<<TEXT rkenbgjengrnekjrgn2ioih34fnorfejk TEXT; $char = array_merge(range("a", "z"), range("A", "Z")); $length = strlen($text); $counter = array(); for($i = 0; $i < $length; $i++) { $item = $text[$i]; if (in_array($item, $char)) { $counter[$item] = isset($counter[$item]) ? $counter[$item] + 1 : 1; } } arsort($counter); var_dump($counter);
Output for git.master, git.master_jit, rfc.property-hooks
array(11) { ["n"]=> int(5) ["r"]=> int(4) ["e"]=> int(4) ["k"]=> int(3) ["g"]=> int(3) ["j"]=> int(3) ["i"]=> int(2) ["o"]=> int(2) ["f"]=> int(2) ["b"]=> int(1) ["h"]=> int(1) }

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