Felix's Second Life 電腦數碼世界

var_dump(get_html_translation_table(HTML_ENTITIES, ENT_QUOTES | ENT_XML1));

The result will look like this:

array(5) {
  ["""]=>
  string(6) """
  ["&"]=>
  string(5) "&"
  ["'"]=>
  string(6) "'"
  ["<"]=>
  string(4) "&lt;"
  [">"]=>
  string(4) "&gt;"
}

echo htmlspecialchars("&<>\"'", ENT_QUOTES | ENT_XML1);

echo html_entity_decode("&amp;&lt;&gt;&quot;&apos;", ENT_QUOTES | ENT_XML1);

http://nikic.github.io/2012/01/28/htmlspecialchars-improvements-in-PHP-5-4.html