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-2.2.1.159	tracks/php/exercises/isogram/example.php
trackler-2.2.1.158	tracks/php/exercises/isogram/example.php
trackler-2.2.1.157	tracks/php/exercises/isogram/example.php
trackler-2.2.1.156	tracks/php/exercises/isogram/example.php
trackler-2.2.1.155	tracks/php/exercises/isogram/example.php
trackler-2.2.1.154	tracks/php/exercises/isogram/example.php
trackler-2.2.1.153	tracks/php/exercises/isogram/example.php
trackler-2.2.1.152	tracks/php/exercises/isogram/example.php
trackler-2.2.1.151	tracks/php/exercises/isogram/example.php
trackler-2.2.1.150	tracks/php/exercises/isogram/example.php
trackler-2.2.1.149	tracks/php/exercises/isogram/example.php
trackler-2.2.1.148	tracks/php/exercises/isogram/example.php
trackler-2.2.1.147	tracks/php/exercises/isogram/example.php
trackler-2.2.1.146	tracks/php/exercises/isogram/example.php
trackler-2.2.1.145	tracks/php/exercises/isogram/example.php
trackler-2.2.1.144	tracks/php/exercises/isogram/example.php
trackler-2.2.1.143	tracks/php/exercises/isogram/example.php
trackler-2.2.1.142	tracks/php/exercises/isogram/example.php
trackler-2.2.1.141	tracks/php/exercises/isogram/example.php
trackler-2.2.1.140	tracks/php/exercises/isogram/example.php