PHP怎么把字符串里变成转义字符

Question

PHP怎么把字符串里变成转义字符

Answer 1

编码
$new = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES);
echo $new; // <a href='test'>Test</a>

解码
$str = '<p>this -> "</p>';

echo htmlspecialchars_decode($str);

// note that here the quotes aren't converted
echo htmlspecialchars_decode($str, ENT_NOQUOTES);