1. Advertising
    y u no do it?

    Advertising (learn more)

    Advertise virtually anything here, with CPM banner ads, CPM email ads and CPC contextual links. You can target relevant areas of the site and show ads based on geographical location of the user if you wish.

    Starts at just $1 per CPM or $0.10 per CPC.

What is the means of the single '|' operator in PHP?

Discussion in 'PHP' started by Kaan Yılmaz, Mar 28, 2020.

  1. #1
    Hi there!
    What is the means of the single '|' operator in PHP? How can I use this operator? I looked at the php.net, but I couldn't learn info about this operator.

    I asking the SINGLE (|) operator, NOT THE DOUBLE (||) operator.

    Thanks.
    SEMrush
     
    Kaan Yılmaz, Mar 28, 2020 IP
    SEMrush
  2. deathshadow

    deathshadow Acclaimed Member

    Messages:
    9,302
    Likes Received:
    1,802
    Best Answers:
    244
    Trophy Points:
    515
    #2
    binary comparison instead of boolean. Same applies to & vs. &&.

    https://www.php.net/manual/en/language.operators.bitwise.php

    bitwise if either is true it's true (1), otherwise it's false.

    0b0001 | 0b0001 == 0b0001
    0b0001 | 0b0000 == 0b0001
    0b0000 | 0b0000 == 0b0000
    0b0010 | 0b0001 == 0b0011 (3 decimal)

    Binary and, bitwise both have to be true (1) for a true result, otherwise false (zero)

    0b0001 & 0b0001 == 0b0001
    0b0001 & 0b0000 == 0b0000
    0b0000 & 0b0000 == 0b0000
    0b0010 & 0b0001 == 0b0000

    There's also xor, where if both are true (1), the result is false (0), otherwise it behaves like single |

    0b0001 ^ 0b0001 == 0b0000
    0b0001 ^ 0b0000 == 0b0001
    0b0000 ^ 0b0000 == 0b0000
    0b0010 ^ 0b0001 == 0b0011

    XOR is used in bitmap graphics a lot, since it's an easy way to draw a inverse video sprite, that can be undrawn by simply xor'ing the sprite onto the back-buffer.

    If you're not familiar with binary operations, this probably doesn't make much sense.
     
    deathshadow, Mar 28, 2020 IP
    Saputnik and JEET like this.
  3. Kaan Yılmaz

    Kaan Yılmaz Peon

    Messages:
    2
    Likes Received:
    0
    Best Answers:
    0
    Trophy Points:
    1
    #3
    Wow man, thank you very much for answering.
     
    Kaan Yılmaz, Mar 28, 2020 IP