1) Value assignment operator: =
2) Arithmetic Operators: +,-, *,/, % (Modulo)
3) join OPERATOR:. No matter what the operand is, it is treated as a String and the result returns a String.
4) total value Assignment operator (Combined Assignment Operators): + =, * =,/=,-=, % =,. =
5) Auto increment/Decrementing operator (Automatically Incrementing and Decrementing ):
(1) $ variable + = 1 variable $ variable ++; $ variable-= 1 variable $ variable-. Perform other operations like C, and then ++ or-
(2) ++ $ variable,-$ variable, first ++ or-, and then perform other operations
6) Comparison operators:
= (Left equals to right ),! = (Left is not equal to right ),
===( The left side is equal to the right side, and the data type is the same ),
>=, >,<, <=
7) logical operators: | or, & and, xor (returns true if only one of the left and right sides is true ),!