Operators in PHP---arithmetic operators, logical operators, assignment operators, comparison operators

1. Arithmetic operators

Common arithmetic operators

Type of operation	Operator	Example	Results
Take inverse operation	-	-$a	Returns a negative value of $ A
Addition operation	+	$a + $b	Returns $ A with $b and
Subtraction operations	-	$a-$b	Returns the difference between $ A and $b
Multiplication operations	*	$a * $b	Returns the product of $ A and $b
Division operation	/	$a/$b	Returns $ A and $b quotient
Take the remainder operation	%	$a% $b	Returns the remainder of $ A and $b

2. Logical operators

logical operators in PHP

Type of operation	Operator	Example	Results
Logic and	&& or	$a && $b or $a and $b	Returns True when $ A and $b are true, otherwise false
Logical OR	|| OR OR	$a | | $b or $a or $b	Returns True when $ A or $b is true, otherwise false
Logical XOR or	Xor	$a XOR $b	When $ A true $b false or $ A fake $b true, returns True, otherwise returns false
Logical Non-	!	! $a	Returns True when $ A is false, otherwise returns false

3. Assignment operators

The assignment operator "=" is the most basic operator in PHP, which assigns the value of the expression "=" to the left-hand operand.

In addition, PHP is commonly used to compound assignment operators.

Compound assignment operator

Type of operation	Operator	Example	Results
Addition Assignment	+=	$a + = 5	$a plus 5 and assign a value to $ A
Subtraction Assignment	-=	$a-= 5	$a minus 5 is assigned a value of $ A
Multiply Assign Value	*=	$a *= 5	$a multiplied by 5 for the product assignment to $ A
Division Assignment	/=	$a/= 5	The quotient of $a divided by 5 is assigned to $ A
Assignment of residual value	%=	$a%= 5	$a is assigned to $ A by dividing the remainder of 5

4. Comparison operators

td> returns True if the value of $a is greater than the value of $b, otherwise false

operation type	operator	example	result
less than	<	$a < $b	returns True if $a value is less than $b value, otherwise false
greater than	;	$a > $b
is less than or equal to	<=	$a <= $b	When the value of $a is less than or equal to Returns True if $b value, otherwise false
is greater than or equal to	>=	$a >= $b	When the value of $a is greater than or equal to $b, the return is true, otherwise return false
equal	=	$a = = $b	Returns True if the value of $a equals $b, otherwise returns false
congruent	= = =	$a = = = $b	returns True if the value of the $a equals the value of the $b, and the $a is equal to the type of the $b, otherwise false
is not equal	! =	$a! = $b or $a <> $b	returns False if the value of the $a equals the value of $b, otherwise returns true
not identical	!==	$a!== $b	when $a value equals $b value, and $ A is equal to the type of $b, False is returned, otherwise true

The above describes the operators in PHP---arithmetic operators, logical operators, assignment operators, comparison operators, including aspects of the content, you want to be interested in PHP tutorial friends helpful.

