3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?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 : 0; } } asort($counter); var_dump($counter);
based on q1N7u
Output for 7.0.0 - 7.2.0
array(11) { ["b"]=> int(0) ["h"]=> int(0) ["i"]=> int(1) ["o"]=> int(1) ["f"]=> int(1) ["k"]=> int(2) ["g"]=> int(2) ["j"]=> int(2) ["r"]=> int(3) ["e"]=> int(3) ["n"]=> int(4) }
Output for 5.3.21 - 5.6.28
array(11) { ["b"]=> int(0) ["h"]=> int(0) ["i"]=> int(1) ["f"]=> int(1) ["o"]=> int(1) ["j"]=> int(2) ["g"]=> int(2) ["k"]=> int(2) ["e"]=> int(3) ["r"]=> int(3) ["n"]=> int(4) }