php - 使用正则表达式将大写匹配转换为粗体

Question

我需要在字符串中找到所有大写单词并将其设置为粗体

$_POST['descricao'] = "UPPERCASE test WORD"
$_POST['descricao'] = preg_replace("\b[A-Z]{2,}\b", "<b>\\1</b>", $_POST['descricao']);

它应该返回：<b>UPPERCASE</b> test <b>WORD</b>

Answer 1

您需要捕获组并附上模式：

preg_replace("/\b([A-Z]{2,})\b/", "<b>\\1</b>", $_POST['descricao']);

Answer 2

用这个：

$_POST['descricao'] = "UPPERCASE test WORD"
$_POST['descricao'] = preg_replace("/\b([A-Z]{2,})\b/", "<b>$1</b>", $_POST['descricao']);