php pipe equals for number

Question

Well, I know | would means 'OR' in php; however, when I was trying to make it work with number, things go weired.

You may want to try the code below:

<?php 
    $i = 101;
    $i |= 7;
    echo $i; // output: 103 ?! why?!
?>

What are you trying to do exactly? As aldrin stated, it's a bitwise OR, do you want a comparison OR - `$i || 7;`? — Darren, Aug 17 '15 at 06:13

score 0 · Accepted Answer · edited May 23 '17 at 12:08

0

It would convert into binary when you pass | to values. Please refer for more What Does Using A Single Pipe '|' In A Function Argument Do?

Explanation:

Decimal             Binary
101                 1100101
7                   111

OR (|) operation in these values:

64  32  16  8  4  2  1  =   Value
1   1   0   0  1  0  1  =   101
               1  1  1  =   7
-------------------------------
1   1   0   0  1  1  1  =   103

edited May 23 '17 at 12:08

Community

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answered Aug 17 '15 at 06:19

Disha V.

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You should explain here when you are answering any question instead of referring some other question/answers. – Sougata Bose Aug 17 '15 at 06:23
@b0s3 Thanks mate! Updated! – Disha V. Aug 17 '15 at 06:34

score 0 · Answer 2 · answered Aug 17 '15 at 06:25

0

Its a bitwise OR operator. Explanation:

Binary of 101 is: 01100101 and place values are: 64+32+4+1

Binary of 7 is: 111 and place values are: 4+2+1

Both values sets together will be: 64+32+4+2+1 = 103

answered Aug 17 '15 at 06:25

amit

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php pipe equals for number

2 Answers2