Operators in PHP

First, Arithmetic Operators

Operator	Name	Describe	Instance	Results
X + y	Add	X and Y's and	2 + 2	4
X-y	Reducing	The difference between x and Y	5-2	3
X * y	By	The product of X and Y	5 * 2	10
X/Y	Except	Quotient of X and Y	15/5	3
X y	Modulo (remainder of division)	The remainder of x divided by Y	5% 2	1
-X	Take counter	X inverse	-2	-2
A. B	collocated	Connect two strings	"Hi". "Ha"	Hiha

Note: The divisor of "/" and "%" cannot be 0, and in the PHP language the operands of both sides are converted to integers before the operation.

Second, Assignment Operators

Operator	Equivalent to	Describe
x = y	x = y	The left operand is set to the value of the right-hand expression
x + = y	x = x + y	Add
X-= y	x = XY	Reducing
X *= y	x = x * y	By
X/= y	× = x/y	Except
X%= y	x = x% y	Modulo (remainder of division)
A. = b	A = A. B	Connect two strings

"= =" with the " === the Difference

==: requires equal values, without requiring the data type to be equal;

=== : Both the required value and the data type must be equal.

Third, increment/decrement operator

operator	name	description
++ x	pre-increment	x plus 1, then return x
x + +		return x, then x plus 1
--x		x minus 1, then returns x
x--		return x, then x minus 1

Four, comparison Operators

Operator	Name	Describe	Instance
x = = y	Equals	Returns True if X equals y	5==8 return False
x = = y	Constant equals	Returns True if X equals Y and they are of the same type	5=== "5" returns false
X! = y	Not equal to	Returns True if X is not equal to Y	5!=8 returns True
X <> y	Not equal to	Returns True if X is not equal to Y	5<>8 returns True
X!== y	Not constant equals	Returns True if X is not equal to Y, or if they are of different types	5!== "5" returns True
X > Y	Greater than	Returns True if X is greater than Y	5>8 return False
X < y	Less than	Returns True if X is less than Y	5<8 returns True
X >= y	Greater than or equal	Returns True if X is greater than or equal to Y	5>=8 return False
X <= y	Less than or equal	Returns True if X is less than or equal to Y	5<=8 returns True

Five, logical Operators

Operator	Name	Describe	Instance
X and Y	And	Returns true if both X and Y are true	X=6 Y=3 (x < ten and y > 1) returns True
X or Y	Or	Returns True if X and Y have at least one true	X=6 Y=3 (x==6 or y==5) returns True
X XOR y	XOR or	Returns True if X and Y have and only one is true	X=6 Y=3 (X==6 xor y==3) returns false
X && y	And	Returns true if both X and Y are true	X=6 Y=3 (x < ten && y > 1) returns True
x | | Y	Or	Returns True if X and Y have at least one true	X=6 Y=3 (x==5 | | y==5) returns false
! X	Non -	Returns True if X is not true	X=6 Y=3 ! (x==y) returns True

Six, Array Operators

Operator	Name	Describe
X + y	Collection	Collections of X and Y
x = = y	Equal	Returns True if X and Y have the same key/value pair
x = = y	Identical	Returns True if X and Y have the same key/value pair and have the same type in the same order
X! = y	Not equal	Returns True if X is not equal to Y
X <> y	Not equal	Returns True if X is not equal to Y
X!== y	Bu Heng, etc.	Returns True if X is not equal to Y

Seven, 7. ternary operators:

(EXPRL)? (EXPRL1): (EXPRL2) similar to "If...else", but the ternary operator appears more tidy when the value of Experl is true, the value of EXPRL1 is obtained, and the value of EXPRL2 is taken instead.

Operators in PHP