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-2.2.1.180	tracks/php/exercises/isogram/example.php
trackler-2.2.1.179	tracks/php/exercises/isogram/example.php
trackler-2.2.1.178	tracks/php/exercises/isogram/example.php
trackler-2.2.1.177	tracks/php/exercises/isogram/example.php
trackler-2.2.1.176	tracks/php/exercises/isogram/example.php
trackler-2.2.1.175	tracks/php/exercises/isogram/example.php
trackler-2.2.1.174	tracks/php/exercises/isogram/example.php
trackler-2.2.1.173	tracks/php/exercises/isogram/example.php
trackler-2.2.1.172	tracks/php/exercises/isogram/example.php
trackler-2.2.1.171	tracks/php/exercises/isogram/example.php
trackler-2.2.1.170	tracks/php/exercises/isogram/example.php
trackler-2.2.1.169	tracks/php/exercises/isogram/example.php
trackler-2.2.1.167	tracks/php/exercises/isogram/example.php
trackler-2.2.1.166	tracks/php/exercises/isogram/example.php
trackler-2.2.1.165	tracks/php/exercises/isogram/example.php
trackler-2.2.1.164	tracks/php/exercises/isogram/example.php
trackler-2.2.1.163	tracks/php/exercises/isogram/example.php
trackler-2.2.1.162	tracks/php/exercises/isogram/example.php
trackler-2.2.1.161	tracks/php/exercises/isogram/example.php
trackler-2.2.1.160	tracks/php/exercises/isogram/example.php