Normalize string

normalize.php

<?php

namespace Karmia\Helper\Normalize;

/**
 * Normalize values 
 *
 * @author fujimaki-k
 * @param  array $array
 * @return array
 */
function normalize ($values) {
    $result = [];
    $items = is_array($values) ? $values : [$values];
    foreach ($items as $key => $value) {
        $lines = [];
        foreach (explode("\n", str_replace(["\r\n", "\r"], "\n", $value)) as $line) {
            $lines[] = preg_replace('/\p{C}/u', '', $line);
        }

        $result[$key] = trim(\Normalizer::normalize(implode("\n", $lines), \Normalizer::NFKC));
    }

    return is_array($values) ? $result : $result[0];
}