How to remove special symbol from string in the php

Question

I have to remove : from the string colon for example $chapter=Area of shape:triangle

I have already tried preg_replace('[^a-zA-Z0-9]',$chapter);

possible duplicate of [Regular Expression Sanitize (PHP)](http://stackoverflow.com/questions/3022185/regular-expression-sanitize-php) — Nagama Inamdar, Feb 04 '15 at 09:16
WTF does this have to do with what the `facebook` tag stands for? Please tag appropriately, not randomly. — CBroe, Feb 04 '15 at 09:40

score 1 · Answer 1 · answered Feb 04 '15 at 09:20

1

You forgot delimiters and the second parameter of preg_replace function.

preg_replace('~[^a-zA-Z0-9]+~', '', $chapter);

answered Feb 04 '15 at 09:20

pavel

you don't need to have + after the negated char class. – Avinash Raj Feb 15 '15 at 14:31

score 1 · Answer 2 · edited Feb 15 '15 at 14:30

1

Maybe I don't understand the question or I over-simplify it, but ain't it just:

str_replace(":", "", $chapter);

? This would return $chapter with all colons removed.

edited Feb 15 '15 at 14:30

Avinash Raj

answered Feb 04 '15 at 10:10

Satria

2 Answers2