Contents

<?php

/**
 * Abbreviates a phrase.
 *
 * @param string $phrase
 * @return string
 */
function acronym($phrase)
{
    $matches = preg_match_all('/\p{Lu}+\p{Ll}*|\p{Ll}+/u', $phrase, $words);

    if ($matches === false || $matches < 2) {
        return '';
    }

    return array_reduce($words[0], function ($acronym, $word) {
        return $acronym.mb_strtoupper(mb_substr($word, 0, 1));
    });
}

Version data entries

393 entries across 393 versions & 1 rubygems

Version	Path
trackler-2.2.1.119	tracks/php/exercises/acronym/example.php
trackler-2.2.1.118	tracks/php/exercises/acronym/example.php
trackler-2.2.1.117	tracks/php/exercises/acronym/example.php
trackler-2.2.1.116	tracks/php/exercises/acronym/example.php
trackler-2.2.1.115	tracks/php/exercises/acronym/example.php
trackler-2.2.1.114	tracks/php/exercises/acronym/example.php
trackler-2.2.1.113	tracks/php/exercises/acronym/example.php
trackler-2.2.1.111	tracks/php/exercises/acronym/example.php
trackler-2.2.1.110	tracks/php/exercises/acronym/example.php
trackler-2.2.1.109	tracks/php/exercises/acronym/example.php
trackler-2.2.1.108	tracks/php/exercises/acronym/example.php
trackler-2.2.1.107	tracks/php/exercises/acronym/example.php
trackler-2.2.1.106	tracks/php/exercises/acronym/example.php
trackler-2.2.1.105	tracks/php/exercises/acronym/example.php
trackler-2.2.1.104	tracks/php/exercises/acronym/example.php
trackler-2.2.1.103	tracks/php/exercises/acronym/example.php
trackler-2.2.1.102	tracks/php/exercises/acronym/example.php
trackler-2.2.1.101	tracks/php/exercises/acronym/example.php
trackler-2.2.1.100	tracks/php/exercises/acronym/example.php
trackler-2.2.1.99	tracks/php/exercises/acronym/example.php