Contents

<?php

function isIsogram($string)
{
    $string = str_replace(['-', ' '], '', mb_strtolower($string));
    $letters = preg_split('//u', $string, -1, PREG_SPLIT_NO_EMPTY);
    return count($letters) === count(array_unique($letters));
}

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.18	tracks/php/exercises/isogram/example.php
trackler-2.2.1.17	tracks/php/exercises/isogram/example.php
trackler-2.2.1.16	tracks/php/exercises/isogram/example.php
trackler-2.2.1.15	tracks/php/exercises/isogram/example.php
trackler-2.2.1.14	tracks/php/exercises/isogram/example.php
trackler-2.2.1.13	tracks/php/exercises/isogram/example.php
trackler-2.2.1.12	tracks/php/exercises/isogram/example.php
trackler-2.2.1.11	tracks/php/exercises/isogram/example.php
trackler-2.2.1.10	tracks/php/exercises/isogram/example.php
trackler-2.2.1.9	tracks/php/exercises/isogram/example.php
trackler-2.2.1.8	tracks/php/exercises/isogram/example.php
trackler-2.2.1.7	tracks/php/exercises/isogram/example.php
trackler-2.2.1.6	tracks/php/exercises/isogram/example.php
trackler-2.2.1.5	tracks/php/exercises/isogram/example.php
trackler-2.2.1.4	tracks/php/exercises/isogram/example.php
trackler-2.2.1.3	tracks/php/exercises/isogram/example.php
trackler-2.2.1.2	tracks/php/exercises/isogram/example.php
trackler-2.2.1.1	tracks/php/exercises/isogram/example.php
trackler-2.2.1.0	tracks/php/exercises/isogram/example.php
trackler-2.2.0.6	tracks/php/exercises/isogram/example.php