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-2.2.1.98	tracks/php/exercises/isogram/example.php
trackler-2.2.1.97	tracks/php/exercises/isogram/example.php
trackler-2.2.1.96	tracks/php/exercises/isogram/example.php
trackler-2.2.1.95	tracks/php/exercises/isogram/example.php
trackler-2.2.1.94	tracks/php/exercises/isogram/example.php
trackler-2.2.1.93	tracks/php/exercises/isogram/example.php
trackler-2.2.1.92	tracks/php/exercises/isogram/example.php
trackler-2.2.1.91	tracks/php/exercises/isogram/example.php
trackler-2.2.1.90	tracks/php/exercises/isogram/example.php
trackler-2.2.1.89	tracks/php/exercises/isogram/example.php
trackler-2.2.1.88	tracks/php/exercises/isogram/example.php
trackler-2.2.1.87	tracks/php/exercises/isogram/example.php
trackler-2.2.1.86	tracks/php/exercises/isogram/example.php
trackler-2.2.1.85	tracks/php/exercises/isogram/example.php
trackler-2.2.1.84	tracks/php/exercises/isogram/example.php
trackler-2.2.1.83	tracks/php/exercises/isogram/example.php
trackler-2.2.1.82	tracks/php/exercises/isogram/example.php
trackler-2.2.1.81	tracks/php/exercises/isogram/example.php
trackler-2.2.1.80	tracks/php/exercises/isogram/example.php
trackler-2.2.1.79	tracks/php/exercises/isogram/example.php