Issue
When I run a phrase that contains double quotes through this function, its replacing the quotes with quot.
I want to completely remove them (also single quotes). How can I alter the function to do that?
function string_sanitize($s) {
$result = preg_replace("/[^a-zA-Z0-9]+/", "", $s);
return $result;
}
Update:
Example 1: This is 'the' first example
returns: Thisis030the039firstexample
Errors: Warning: preg_match_all() [function.preg-match-all]: Unknown modifier '0' in C
Example 2: This is my "second" example
returns: Thisismyquotsecondquotexample
Errors: Invalid express in Xpath
Solution
It looks like your original string had the HTML characters for "
("
) so when you attempt to sanitize it, you're simply remove the &
and ;
, leaving the rest of the string quot
.
---EDIT---
Probably the easiest way to remove non alpha numeric characters would be to decode the HTML characters with html_entity_decode, then run it through the regular expression. Since, in this case, you won't get anything that needs to be re-coded, you don't need to then do htmlentities, but it's worth remembering that you had HTML data and you now have raw unencoded data.
Eg:
function string_sanitize($s) {
$result = preg_replace("/[^a-zA-Z0-9]+/", "", html_entity_decode($s, ENT_QUOTES));
return $result;
}
Note that ENT_QUOTES
flags the function to "...convert both double and single quotes.".
Answered By - Hamish Answer Checked By - Marie Seifert (PHPFixing Admin)
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