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