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-2.2.0.5	tracks/php/exercises/isogram/example.php
trackler-2.2.0.4	tracks/php/exercises/isogram/example.php
trackler-2.2.0.3	tracks/php/exercises/isogram/example.php
trackler-2.2.0.2	tracks/php/exercises/isogram/example.php
trackler-2.2.0.1	tracks/php/exercises/isogram/example.php
trackler-2.2.0.0	tracks/php/exercises/isogram/example.php
trackler-2.1.0.55	tracks/php/exercises/isogram/example.php
trackler-2.1.0.54	tracks/php/exercises/isogram/example.php
trackler-2.1.0.53	tracks/php/exercises/isogram/example.php
trackler-2.1.0.52	tracks/php/exercises/isogram/example.php
trackler-2.1.0.51	tracks/php/exercises/isogram/example.php
trackler-2.1.0.50	tracks/php/exercises/isogram/example.php
trackler-2.1.0.49	tracks/php/exercises/isogram/example.php
trackler-2.1.0.48	tracks/php/exercises/isogram/example.php
trackler-2.1.0.47	tracks/php/exercises/isogram/example.php
trackler-2.1.0.46	tracks/php/exercises/isogram/example.php
trackler-2.1.0.45	tracks/php/exercises/isogram/example.php
trackler-2.1.0.44	tracks/php/exercises/isogram/example.php
trackler-2.1.0.43	tracks/php/exercises/isogram/example.php
trackler-2.1.0.42	tracks/php/exercises/isogram/example.php