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-2.2.1.159	tracks/php/exercises/acronym/example.php
trackler-2.2.1.158	tracks/php/exercises/acronym/example.php
trackler-2.2.1.157	tracks/php/exercises/acronym/example.php
trackler-2.2.1.156	tracks/php/exercises/acronym/example.php
trackler-2.2.1.155	tracks/php/exercises/acronym/example.php
trackler-2.2.1.154	tracks/php/exercises/acronym/example.php
trackler-2.2.1.153	tracks/php/exercises/acronym/example.php
trackler-2.2.1.152	tracks/php/exercises/acronym/example.php
trackler-2.2.1.151	tracks/php/exercises/acronym/example.php
trackler-2.2.1.150	tracks/php/exercises/acronym/example.php
trackler-2.2.1.149	tracks/php/exercises/acronym/example.php
trackler-2.2.1.148	tracks/php/exercises/acronym/example.php
trackler-2.2.1.147	tracks/php/exercises/acronym/example.php
trackler-2.2.1.146	tracks/php/exercises/acronym/example.php
trackler-2.2.1.145	tracks/php/exercises/acronym/example.php
trackler-2.2.1.144	tracks/php/exercises/acronym/example.php
trackler-2.2.1.143	tracks/php/exercises/acronym/example.php
trackler-2.2.1.142	tracks/php/exercises/acronym/example.php
trackler-2.2.1.141	tracks/php/exercises/acronym/example.php
trackler-2.2.1.140	tracks/php/exercises/acronym/example.php