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-2.2.1.180	tracks/php/exercises/acronym/example.php
trackler-2.2.1.179	tracks/php/exercises/acronym/example.php
trackler-2.2.1.178	tracks/php/exercises/acronym/example.php
trackler-2.2.1.177	tracks/php/exercises/acronym/example.php
trackler-2.2.1.176	tracks/php/exercises/acronym/example.php
trackler-2.2.1.175	tracks/php/exercises/acronym/example.php
trackler-2.2.1.174	tracks/php/exercises/acronym/example.php
trackler-2.2.1.173	tracks/php/exercises/acronym/example.php
trackler-2.2.1.172	tracks/php/exercises/acronym/example.php
trackler-2.2.1.171	tracks/php/exercises/acronym/example.php
trackler-2.2.1.170	tracks/php/exercises/acronym/example.php
trackler-2.2.1.169	tracks/php/exercises/acronym/example.php
trackler-2.2.1.167	tracks/php/exercises/acronym/example.php
trackler-2.2.1.166	tracks/php/exercises/acronym/example.php
trackler-2.2.1.165	tracks/php/exercises/acronym/example.php
trackler-2.2.1.164	tracks/php/exercises/acronym/example.php
trackler-2.2.1.163	tracks/php/exercises/acronym/example.php
trackler-2.2.1.162	tracks/php/exercises/acronym/example.php
trackler-2.2.1.161	tracks/php/exercises/acronym/example.php
trackler-2.2.1.160	tracks/php/exercises/acronym/example.php