PHP: OR and ||, AND and &&

Question

I am know about priority, but if we have one simple condition:

if ($a == 1 AND $b == 2){

}

Is there any difference with

if ($a == 1 && $b == 2){

}

?

No difference with `==`. Compare with [PHP operator precedence](http://php.net/manual/en/language.operators.precedence.php). — hakre, Aug 12 '12 at 09:07
a bit OOT, what funny for me is, the fact that CI suggests users to use OR instead of ||, but choosing && instead of AND... such an inconsistency... — zfm, Aug 12 '12 at 09:15

Matteo Tassinari · Accepted Answer · 2012-08-12T09:13:13.770

5

There is no difference at all, except that perhaps using AND is somewhat more readable.

EDIT: just checked, and there is a small difference in the operators precedence, see http://php.net/manual/en/language.operators.precedence.php

edited Aug 12 '12 at 09:13

answered Aug 12 '12 at 09:06

Matteo Tassinari

score 4 · Answer 2 · edited May 23 '17 at 12:27

4

They do the exact same thing. && has higher precedence that AND though.

This has been asked before:

edited May 23 '17 at 12:27

Community

answered Aug 12 '12 at 09:09

Brent Morrow

2

I believe I can fly. I believe I can touch the sky. – hakre Aug 12 '12 at 09:10

score 1 · Answer 3 · answered Aug 12 '12 at 09:09

1

The both work the same in php, but most programmers are used to using && as its the syntax used in most programming languages

answered Aug 12 '12 at 09:09

Yes, i am now about it, but AND more readable and easy to type it =) – Andrey Vorobyev Aug 12 '12 at 09:10

3 Answers3