Remove hash symbols from string (str_replace() doesn't modify by reference)

Question

How can I remove all hashes from a string with PHP?

I've tried str_replace("#","",$message), but it didn't work.

Answer 1

Remember that str_replace() return replaced text.

Example:

$a = '### Foo ###';
$a = str_replace('#', '', $a);
echo $a;

DEMO