*A variable name must start with a letter or an underscore "_"
*A variable name can only contain alpha-numeric characters and undersores (a-z,A-Z.0-9,and_)
*A variable name should not contain spaces.If a variable name is more han one word,i should be separated with an undescore ($my_string),or with capitalizaion ($myString)
*Operators are used to operate on values.
*PHP Operators.
*This section lists the different operators used in PHP.
*A variable name can only contain alpha-numeric characters and undersores (a-z,A-Z.0-9,and_)
*A variable name should not contain spaces.If a variable name is more han one word,i should be separated with an undescore ($my_string),or with capitalizaion ($myString)
*Operators are used to operate on values.
*PHP Operators.
*This section lists the different operators used in PHP.
Arithmetic Operators
Operator | Description | Example | Result |
+ | Addition | x=2 x+2 | 4 |
- | Subtraction | X=2 5-x | 3 |
* | Multiplication | x=4 x*5 | 20 |
% | Modulus(division remember) | 5%2 10%8 10%2 | 1 2 0 |
/ | Division | 15/5 5/2 | 3 2.5 |
++ | Increment | X=5 x++ | x=6 |
-- | Decrement | x=5 x-- | x=4 |
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