Operators in PHP
Operators in PHP are symbols that tell the PHP processor to perform certain actions.
PHP Arithmetic Operators
The arithmetic operators are used to perform common arithmetical operations,
PHP Assignment Operators
The assignment operators are used to assign values to variables.
PHP Comparison Operators
The comparison operators are used to compare two values in a Boolean fashion.
Operator |
Name |
Example |
Result |
== |
Equal |
$x == $y |
True if $x is equal to $y |
=== |
Identical |
$x === $y |
True if $x is equal to $y, and they are of the same type |
!= |
Not equal |
$x != $y |
True if $x is not equal to $y |
<> |
Not equal |
$x <> $y |
True if $x is not equal to $y |
!== |
Not identical |
$x !== $y |
True if $x is not equal to $y, or they are not of the same type |
< |
Less than |
$x < $y |
True if $x is less than $y |
> |
Greater than |
$x > $y |
True if $x is greater than $y |
>= |
Greater than or equal to |
$x >= $y |
True if $x is greater than or equal to $y |
<= |
Less than or equal to |
$x <= $y |
True if $x is less than or equal to $y |
PHP Incrementing and Decrementing Operators
The increment/decrement operators are used to increment/decrement a variable’s value.
Operator |
Name |
Effect |
++$x |
Pre-increment |
Increments $x by one, then returns $x |
$x++ |
Post-increment |
Returns $x, then increments $x by one |
–$x |
Pre-decrement |
Decrements $x by one, then returns $x |
$x– |
Post-decrement |
Returns $x, then decrements $x by one |
PHP Logical Operators
The logical operators are typically used to combine conditional statements.
Operator |
Name |
Example |
Result |
And |
And |
$x and $y |
True if both $x and $y are true |
Or |
Or |
$x or $y |
True if either $x or $y is true |
Xor |
Xor |
$x xor $y |
True if either $x or $y is true, but not both |
&& |
And |
$x && $y |
True if both $x and $y are true |
|| |
Or |
$x || $y |
True if either $x or $y is true |
! |
Not |
!$x |
True if $x is not true |
PHP String Operator
There are two operators which are specifically designed for strings.
Operator |
Description |
Example |
Result |
. |
Concatenation |
$str1 . $str2 |
Concatenation of $str1 and $str2 |
.= |
Concatenation assignment |
$str1 .= $str2 |
Appends the $str2 to the $str1 |
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