Faster case-insensitive #XPath matches in #PHP

sample-xpath-translate-faster.php

<?php

$word           = 'rss';
$elementLetters = \count_chars($word, 3);
$lettersLower   = \mb_strtolower($elementLetters);
$lettersUpper   = \mb_strtoupper($elementLetters);

$query = \sprintf(
    '/*[translate(name(), \'%s\', \'%s\') = \'%s\']',
    $lettersUpper,
    $lettersLower,
    $word
);

# /*[translate(name(), 'RS', 'rs') = 'rss'
$results = $domxpath->query($query);