A simple comparison of "|" and "||" in PHP

In PHP, "|" and "||" are both OR (or) operators, so what is the difference between them? The following article will introduce you to the operators "|" and "||", make a simple comparison between them, and understand the differences between them.

Operator "|"

It is a bitwise OR operator, binary operation operator; it operates on the bits of the variable. If there are two variables a, b, $a | $b; then any bit in $a and $b that is 1 will be set to 1.

Example:

<?php 
$a = 3; 
$b = 10; 
echo $a | $b; 
?>

Output:

##Instructions:

In the above example , given two values, a = 3 and b = 10; then convert these two numbers into binary numbers, i.e. a = 0011 and b = 1010; finally apply the OR (|) operation and calculate $a | $b value.

Operator "||"

This is a logical OR operator, a Boolean operator; it is a Boolean operator for variables value to operate on. If any of these variables has a boolean value of true, then $a || $b has a value of 1.

Example:

<?php 
$a = 3; 
$b = 10; 
echo $a||$b; 
echo &#39;<br>&#39;; 
if($a = 3 || $b = 0) 
    echo &#39;1&#39;; 
else
    echo &#39;0&#39;; 
?>

Output:

Description:

In the above example, two values ​​are given, a = 3 and b =10; therefore the Boolean values ​​of variable a and variable b are both true, then the value of $a||$b is 1; in the if statement , check if one of the conditions is true, because the variable a value is set to 3 and the boolean is true, so the value of executing "$a = 3 || $b = 0" is 1.

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