PHP operator (Operators)

In this section we introduce the PHP operator (Operators).

An operator is something that can produce another value (and thus the entire structure as an expression) by giving one or more of the values (in programming jargon, expressions).

An operator is something so you feed with one or more values (or expressions, in programming jargon) which yields anothe R value (so, the construction itself becomes an expression).

Arithmetic operators (arithmetic Operators)

Operator	Description	Example	Results
+	Add	The $a + $b	4 Variable $ A and $b and
-	Reducing	3-2 $a-$b	1 The difference between the variable $ A and the $b
*	By	3*2 $a * $b	6 Product of variable $ A and $b
/	Except	3/2 $a/$b	1.5 The variable $ A divided by the result of $b
％	Remainder	3/2 $a% $b	1 The variable $ A divided by the remainder of the $b

Assignment operator (Assignment Operators)

The basic assignment operator is =. You might think it's "equal", not really. It actually means assigning the value of the right expression to the left operand.

For example $a = 5, which indicates that the value of 5 is assigned to the variable $a.

In the PHP language, = denotes an assignment, = = equals. = = See the comparison operator below.

Comparison operator (Comparison Operators)

Operator	Description	Example
==	Equals	6==6 returns TRUE
!=	Not equal to	7!=8 returns TRUE
<	Less than	8<7 return FALSE
>	Greater than	8>7 returns TRUE
<=	Less than or equal	8<=9 returns TRUE
>=	Greater than or equal	8>=9 return FALSE

Logical operators (Logical Operators)

Operator	Description	Example
&&	And and	$a && $b Returns true if both $a and $b are true
||	OR OR	$a | | $b True if $a, any one of the $b returns True
!	Not non-	! $a Returns true if the $a is not true
Xor	XOR or different	$a XOR $b If $a, any one of the $b is true, but not both true, returns True

Increment/decrement operator (incrementing/decrementing Operators)

Operator	Description	Example
++	Increasing	$a + +, return $ A and add a $ A value of 1 + + $a, $a value plus 1, and then return $ A
--	Decline	$a--, return $ A, and subtract $ A by 1 --$a, the value of $a minus 1, and then return $ A

String operator (Operators)

There are 2 character operators. One is the join operator., which is used to concatenate two strings; one is the join assignment operator. =, which attaches the right argument to the left argument. Examples are as follows:

Operator	Example	Results
.	"Hello". " World "	HelloWorld
.=	$a = "Hello"; $a. = "World";	$a. = "World" equals $ A = $a. " World " The value of the $a is HelloWorld

Combination of assignment operators and arithmetic operators

operator combinations	Example	Description
+=	$a + = 3	$a = $a + 3
-=	$a-= 3	$a = $a-3
*=	$a *= 3	$a = $a * 3
/=	$a/= 3	$a = $a/3
%=	$a%= 3	$a = $a% 3

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