PHP Operators PHP
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PHP Operators
PHP Operators
PHP Operator is a symbol i.e used to perform operations on operands. For example:
- $num=10+20;//+ is the operator and 10,20 are operands
In the above example, + is the binary + operator, 10 and 20 are operands and $num is variable.
PHP Operators can be categorized in following forms:
- Arithmetic Operators
- Comparison Operators
- Bitwise Operators
- Logical Operators
- String Operators
- Incrementing/Decrementing Operators
- Array Operators
- Type Operators
- Execution Operators
- Error Control Operators
- Assignment Operators
We can also categorize operators on behalf of operands. They can be categorized in 3 forms:
- Unary Operators: works on single operands such as ++, -- etc.
- Binary Operators: works on two operands such as binary +, -, *, / etc.
- Ternary Operators: works on three operands such as "?:".
PHP Operators Precedence
Let's see the precedence of PHP operators with associativity.
| Operators | Additional Information | Associativity |
|---|---|---|
| clone new | clone and new | non-associative |
| [ | array() | left |
| ** | arithmetic | right |
| ++ -- ~ (int) (float) (string) (array) (object) (bool) @ | increment/decrement and types | right |
| instanceof | types | non-associative |
| ! | logical (negation) | right |
| * / % | arithmetic | left |
| + - . | arithmetic and string concatenation | left |
| << >> | bitwise (shift) | left |
| < <= > >= | comparison | non-associative |
| == != === !== <> | comparison | non-associative |
| & | bitwise AND | left |
| ^ | bitwise XOR | left |
| | | bitwise OR | left |
| && | logical AND | left |
| || | logical OR | left |
| ?: | ternary | left |
| = += -= *= **= /= .= %= &= |= ^= <<= >>= => | assignment | right |
| and | logical | left |
| xor | logical | left |
| or | logical | left |
| , | many uses (comma) | left |
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