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-2.2.1.38	tracks/php/exercises/isogram/example.php
trackler-2.2.1.37	tracks/php/exercises/isogram/example.php
trackler-2.2.1.36	tracks/php/exercises/isogram/example.php
trackler-2.2.1.35	tracks/php/exercises/isogram/example.php
trackler-2.2.1.34	tracks/php/exercises/isogram/example.php
trackler-2.2.1.33	tracks/php/exercises/isogram/example.php
trackler-2.2.1.32	tracks/php/exercises/isogram/example.php
trackler-2.2.1.31	tracks/php/exercises/isogram/example.php
trackler-2.2.1.30	tracks/php/exercises/isogram/example.php
trackler-2.2.1.29	tracks/php/exercises/isogram/example.php
trackler-2.2.1.28	tracks/php/exercises/isogram/example.php
trackler-2.2.1.27	tracks/php/exercises/isogram/example.php
trackler-2.2.1.26	tracks/php/exercises/isogram/example.php
trackler-2.2.1.25	tracks/php/exercises/isogram/example.php
trackler-2.2.1.24	tracks/php/exercises/isogram/example.php
trackler-2.2.1.23	tracks/php/exercises/isogram/example.php
trackler-2.2.1.22	tracks/php/exercises/isogram/example.php
trackler-2.2.1.21	tracks/php/exercises/isogram/example.php
trackler-2.2.1.20	tracks/php/exercises/isogram/example.php
trackler-2.2.1.19	tracks/php/exercises/isogram/example.php