包含空格的单词的preg_replace不起作用

Question

it's not working for words containing spaces, it works for single words

if possible changing the words from array to bold

the real code

$_POST['descricao'] = "parede hidráulica: teste de parede hidráulica";

$palavras = array("/\bparede hidráulica cozinha\b/i",
"/\bparede área de serviço\b/i",
"/\bparede area de serviço\b/i",
"/\bparede hidraulica cozinha\b/i",
"/\bparede hidráulica\b/i",
"/\bparede hidraulica\b/i",
"/\bparede box\b/i",
"/\btorneira\b/i",
"/\bbancada\b/i",
"/\bsoleira\b/i",
"/\bbaguete\b/i",
"/\brodapé\b/i",
"/\brodape\b/i",
"/\bparede\b/i");

$maiusculas = array_map('mb_strtoupper', $palavras);
$maiusculas = str_ireplace('\b/i', '', $maiusculas);
$maiusculas = str_ireplace('/\b', '', $maiusculas);

$_POST['descricao'] = preg_replace($palavras, $maiusculas, $_POST['descricao'], 1);

output: PAREDE HIDRÁULICA: teste de PAREDE HIDRÁULICA

correct output: PAREDE HIDRÁULICA: teste de parede hidráulica

Answer 1

it was solved like this, i've changed my need and using this regex it matches with double words if the word is in uppercase

$_POST['descicao'] = 'UNITED STATES test';
$_POST['descricao'] = preg_replace("/\b([A-Z]{2,}(\s[A-Z]{2,})?)\b/", "<b>$1</b>"

output: <b>UNITED STATES</b> test