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

: Operators in PHP --- arithmetic operators, logical operators, value assignment operators, and comparison operators: 1. arithmetic operators common arithmetic operators calculation type operators example result calculation inverse operations -- $ a returns the negative value addition operation of $ a + $ B returns the sum of $ a and $ B subtraction operation-$ a-$ B returns the difference multiplication operation between $ a and $ B * $ a * $ B returns the product division operation between $ a and $ B $ a 1. arithmetic operators

Common arithmetic operators

Operation type	Operator	Example	Result
Inverse operation	-	-$	Returns a negative value of $.
Addition operation	+	$ A + $ B	Returns the sum of $ a and $ B.
Subtraction	-	$ A-$ B	Returns the difference between $ a and $ B.
Multiplication	*	$ A * $ B	Returns the product of $ a and $ B.
Division	/	$ A/$ B	Returns the quotient of $ a and $ B.
Remainder operation	%	$ A % $ B	Returns the remainder of $ a and $ B.

2. logical operators

Logical operators in PHP

Operation type	Operator	Example	Result
Logic and	& OR and	$ A & $ B or $ a and $ B	If both $ a and $ B are true, true is returned. otherwise, false is returned.
Logic or	| Or	$ A | $ B or $ a or $ B	If $ a or $ B is true, true is returned. otherwise, false is returned.
Logic exclusive or	Xor	$ A xor $ B	If $ a is true, $ B is false, or $ a is false, $ B is true. otherwise, false is returned.
Non-logical	!	! $	Returns true if $ a is false; otherwise, false.

3. value assignment operator

The value assignment operator "=" is the most basic operator in PHP. that is, the value of the right expression "=" is assigned to the number of operations on the left.

In addition, compound assignment operators are also commonly used in PHP.

Compound assignment operator

Operation type	Operator	Example	Result
Addition assignment	+ =	$ A + = 5	$ A and the sum of 5 are assigned to $.
Subtraction assignment	-=	$ A-= 5	$ A Minus 5 is assigned to $.
Multiplication assignment	* =	$ A * = 5	$ A multiplied by the product of 5 and assigned to $
Division assignment	/=	$ A/= 5	$ A is assigned to $ a by the operator of 5.
Remainder assignment	% =	$ A % = 5	$ A is assigned to $ a by the remainder of 5.

4. Comparison operators

Operation type	Operator	Example	Result
Less	<	$ A <$ B	If the value of $ a is less than the value of $ B, true is returned. otherwise, false is returned.
Greater	>	$ A> $ B	If the value of $ a is greater than the value of $ B, true is returned. otherwise, false is returned.
Less than or equal	<=	$ A <= $ B	If the value of $ a is less than or equal to the value of $ B, true is returned. otherwise, false is returned.
Greater than or equal	> =	$ A> = $ B	If the value of $ a is greater than or equal to the value of $ B, true is returned. otherwise, false is returned.
Equal	=	$ A = $ B	If the value of $ a is equal to the value of $ B, true is returned. otherwise, false is returned.
Full	===	$ A ===$ B	If the value of $ a is equal to the value of $ B and $ a is of the same type as $ B, true is returned. otherwise, false is returned.
Not Equal	! =	$! = $ B or $ a <> $ B	If the value of $ a is equal to the value of $ B, false is returned. otherwise, true is returned.
Incomplete	! =	$! ==$ B	If $ a is equal to the value of $ B and $ a is of the same type as $ B, false is returned. otherwise, true is returned.

The above describes the operators in PHP-arithmetic operators, logical operators, value assignment operators, and comparison operators, including some content. I hope to help those who are interested in the PHP Tutorial.