What is the meaning of " |= " in php?

Question

I don't know what is the meaning of "|=" in php. Searching Google doesn't help. Please someone explain exactly what they do.

My Question is meaning of "|=" not "!=" ?

I have already search "Reference - What does this symbol mean in PHP?" but i did't get my answer.

Possible duplicate of [Reference - What does this symbol mean in PHP?](http://stackoverflow.com/questions/3737139/reference-what-does-this-symbol-mean-in-php) — Alexander O'Mara, Feb 20 '16 at 04:56
I request you to search in PHP documentation before posting such questions. — Tushar, Feb 20 '16 at 05:04

score 9 · Accepted Answer · answered Feb 20 '16 at 06:14

9

This is bitwise OR operator

$var1 |= $var2; is equal to $var1 = $var1 | $var2;

answered Feb 20 '16 at 06:14

dhi_m

score 2 · Answer 2 · answered Feb 20 '16 at 06:19

2

Its a bitwise OR assignment operator. See PHP menual

$var1 |= $var2 //it means $var1 = $var1 or $var2

answered Feb 20 '16 at 06:19

3

This answer is confusing "`//it means $var1 = $var1 or $var2`" in your comment the `or` has the same result as using `||` which is a **logical OR operators**. Whereas `|` is, as you said, a **bitewise OR assignment operator**. Ex : `echo 11 | 12` returns **15** and `echo 11 or 12` will returns **true** – Clément Baconnier Mar 21 '19 at 22:34

2 Answers2