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<?php $sentence = strtolower('Cozy Qbert honks grawlix'); $usage = count_chars($sentence, 3); $alphabet = range('a', 'z'); var_export([ 'Sentence' => $sentence, 'Total Length' => strlen($sentence), 'Alphabetical Length' => preg_match_all('~[a-z]~', $sentence, $letters), 'Unused Letters' => array_diff($alphabet, $letters[0]), 'Duplicated Letters' => array_diff(array_count_values($letters[0]), [1]), ]);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array ( 'Sentence' => 'cozy qbert honks grawlix', 'Total Length' => 24, 'Alphabetical Length' => 21, 'Unused Letters' => array ( 3 => 'd', 5 => 'f', 9 => 'j', 12 => 'm', 15 => 'p', 20 => 'u', 21 => 'v', ), 'Duplicated Letters' => array ( 'o' => 2, 'r' => 2, ), )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 'Sentence' => 'cozy qbert honks grawlix', 'Total Length' => 24, 'Alphabetical Length' => 21, 'Unused Letters' => array ( 3 => 'd', 5 => 'f', 9 => 'j', 12 => 'm', 15 => 'p', 20 => 'u', 21 => 'v', ), 'Duplicated Letters' => array ( 'o' => 2, 'r' => 2, ), )
preferences:
168.59 ms | 402 KiB | 181 Q