trim entire words (remove words at start, end and both of the string)

trimWord.php

<?php

function ltrimWord(string $str, array $words): string
{
    $words = array_map('preg_quote', $words);
    return preg_replace('/(' . implode('|', $words) . ')/A', '', $str);
}

function rtrimWord(string $str, array $words): string {
    $words = array_map('preg_quote', $words);
    return preg_replace('/(' . implode('|', $words) . ')+$/', '', $str);
}

function trimWord(string $str, array $words): string {
    $words = array_map('preg_quote', $words);
    $str = preg_replace('/(' . implode('|', $words) . ')/A', '', $str);
    return preg_replace('/(' . implode('|', $words) . ')+$/', '', $str);
}