How to shorten this PHP script? (Involves string_replace)?

Question

$replacewith = "";
$replace = "¬";
$new = str_replace("$replace","$replacewith","$toast");

$replacewith = "";
$replace = "~";
$new = str_replace("$replace","$replacewith","$toast");

The first 3 lines check to see if the variable toast has any "¬" characters in it and them deletes them. The second 3 lines check for this symbol "~" and does the same. I was just wondering if it was possible to put this script all in one str_replace so it replaces all the unwanted characters in one script, instead of doing the str replace function for every single unwanted character.

Answer 1

The following script removes the lowercase letters b, e, and j
$new=preg_replace("/(b|e|j)/", "" , "aabbccddeeffgghhiijjkk");
echo $new;
?>

output: aaccddffgghhiikk

Basically that line is saying "for the input string aabbccddeeffgghhiijjkk, replace each letter b, e, and j with nothing"

you can add as many as you want..
for instance
(a|b|c|d|e|f|g|h|i|j|k) would erase everything.

Answer 2

It's possible:

$replacewith = "";
$replace = array("¬", "~");
$new = str_replace($replace, $replacewith, $old);

Answer 3

I would have thought that this could be a case for using Regular Expressions

Answer 4

yes easy,

create an array

$remove_var[] = "¬";
$remove_var[] = "~";

$string = str_replace($remove_var, "", $string);

Answer 5

use ereg_replace() instead