PHP html_entity_decode Doesn't Decode Entity as Expected?

问题

In the following code:

$string1 = "function doesn't work as expected";
$string2 = html_entity_decode($string1);

$string2 still contains:

 '

...after the call to html_entity_decode().

I've checked other SO threads on this topic, but haven't yet found the answer. What am I missing?

回答1:

The default flags for html_entity_decode do not include single quotes. Try updating your flags argument to include ENT_QUOTES and ENT_HTML5:

$string1 = "function doesn't work as expected";
echo $string2 = html_entity_decode($string1, ENT_QUOTES|ENT_HTML5);
// function doesn't work as expected

来源：https://stackoverflow.com/questions/42286695/php-html-entity-decode-doesnt-decode-entity-as-expected