3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = "ejIjSS3Fh5GSYG3hALUII53AeIR55ej3LeeAeSjReS5jRjeeG3GL5hLShhFS5h5GUAheRISFSO5IOIIAGFGGAS3eh5h5FjLe33Ueje3h35jIjjhj5L5j53A3"; foreach (asort(count_chars($data, 1)) as $i => $val) { echo "There were $val instance(s) of \"" , chr($i) , "\" in the string.\n"; } ?>

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41.94 ms | 402 KiB | 5 Q