This section contains detail about Operators in PHP.
Operators in PHP
Operator is used to perform operation on variable and values. PHP operators can be classified into the following categories :
- Arithmetic Operators
- Assignment Operators
- Comparison Operators
- Logical Operators
Arithmetic Operators
| OPERATOR | WORK | USE | RESULT |
| + | Addition | y=3 y+3 |
6 |
| - | Subtraction | y=3 5-y |
2 |
| / | Division | 21/3 |
7 |
| % | Modulus (division remainder) | 10%8 |
2 |
| ++ | Increment | y=3 y++ |
4 |
| * | Multiplication | y=3 y*3 |
9 |
| -- | Decrement | y=5 y-- |
4 |
Assignment Operators
| OPERATOR | USE | EQUIVALENT TO |
| = | a=b | a=b |
| += | a+=b | a=a+b |
| -= | a-=b | a=a-b |
| *= | a*=b | a=a*b |
| /= | a/=b | a=a/b |
| .= | a.=b | a=a.b |
| %= | a%=b | a=a%b |
Comparison Operators
| OPERATOR | NAME | EXAMPLE |
| = = | is equal to | 5= =8 returns false |
| != | is not equal | 5!=8 returns true |
| <> | is not equal | 5<>8 returns true |
| > | is greater than | 5>8 returns false |
| < | is less than | 5<8 returns true |
| >= | is greater than or equal to | 5>=8 returns false |
| <= | is less than or equal to | 5<=8 returns true |
Logical Operators
| OPERATOR | NAME | EXAMPLE |
| && | And | a=7 b=6 (a< 12 && b> 3) returns true |
| || | Or | a=3 b=9 (x==4 || y==4) returns false |
| ! | Not | x=3 y=4 !(x==y) returns true |
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