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-2.2.1.58	tracks/php/exercises/isogram/example.php
trackler-2.2.1.57	tracks/php/exercises/isogram/example.php
trackler-2.2.1.56	tracks/php/exercises/isogram/example.php
trackler-2.2.1.55	tracks/php/exercises/isogram/example.php
trackler-2.2.1.54	tracks/php/exercises/isogram/example.php
trackler-2.2.1.53	tracks/php/exercises/isogram/example.php
trackler-2.2.1.52	tracks/php/exercises/isogram/example.php
trackler-2.2.1.51	tracks/php/exercises/isogram/example.php
trackler-2.2.1.50	tracks/php/exercises/isogram/example.php
trackler-2.2.1.49	tracks/php/exercises/isogram/example.php
trackler-2.2.1.48	tracks/php/exercises/isogram/example.php
trackler-2.2.1.47	tracks/php/exercises/isogram/example.php
trackler-2.2.1.46	tracks/php/exercises/isogram/example.php
trackler-2.2.1.45	tracks/php/exercises/isogram/example.php
trackler-2.2.1.44	tracks/php/exercises/isogram/example.php
trackler-2.2.1.43	tracks/php/exercises/isogram/example.php
trackler-2.2.1.42	tracks/php/exercises/isogram/example.php
trackler-2.2.1.41	tracks/php/exercises/isogram/example.php
trackler-2.2.1.40	tracks/php/exercises/isogram/example.php
trackler-2.2.1.39	tracks/php/exercises/isogram/example.php