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-2.2.1.78	tracks/php/exercises/isogram/example.php
trackler-2.2.1.77	tracks/php/exercises/isogram/example.php
trackler-2.2.1.76	tracks/php/exercises/isogram/example.php
trackler-2.2.1.75	tracks/php/exercises/isogram/example.php
trackler-2.2.1.74	tracks/php/exercises/isogram/example.php
trackler-2.2.1.73	tracks/php/exercises/isogram/example.php
trackler-2.2.1.72	tracks/php/exercises/isogram/example.php
trackler-2.2.1.71	tracks/php/exercises/isogram/example.php
trackler-2.2.1.70	tracks/php/exercises/isogram/example.php
trackler-2.2.1.69	tracks/php/exercises/isogram/example.php
trackler-2.2.1.68	tracks/php/exercises/isogram/example.php
trackler-2.2.1.67	tracks/php/exercises/isogram/example.php
trackler-2.2.1.66	tracks/php/exercises/isogram/example.php
trackler-2.2.1.65	tracks/php/exercises/isogram/example.php
trackler-2.2.1.64	tracks/php/exercises/isogram/example.php
trackler-2.2.1.63	tracks/php/exercises/isogram/example.php
trackler-2.2.1.62	tracks/php/exercises/isogram/example.php
trackler-2.2.1.61	tracks/php/exercises/isogram/example.php
trackler-2.2.1.60	tracks/php/exercises/isogram/example.php
trackler-2.2.1.59	tracks/php/exercises/isogram/example.php