PHP Operators are symbols that tell the PHP processor to perform specific oration. For example, the addition (+) symbol is an operator that tells PHP to add two variables or values, while the greater-than (>) symbol is an operator that tells PHP to compare two values.
PHP language supports following type of operators.
Arithmetic operators use to perform all kind of airthmetic operations, such as Addition, Subtraction, Multiplication, Division etc.
| Operator | Name | Description | Example | Result |
|---|---|---|---|---|
| x + y | Addition | Sum of x and y | 5 + 5 | 10 |
| x – y | Subtraction | Difference of x and y | 5 – 2 | 3 |
| x * y | Multiplication | Multipli of x and y | 5 * 5 | 25 |
| x / y | Division | x Divided by y | 25 / 5 | 5 |
| x % y | Modulus | Remainder of x divided by y | 25 % 2 10 % 5 17 % 5 |
1 0 2 |
| – x | Negation | Opposite of x | – 5 | |
| a . b | Concatenation | Concatenate two strings | “Hi” . “Hello” | HiHello |
The basic assignment operator in PHP is “=”. It means that the left operand
value set to the value of the expression on the right. That is, the value of “$x
= 5” is 5.
| Assignment | Same as… | Description |
|---|---|---|
| x = y | x = y | The left operand value set to the value of the expression on the right |
| x += y | x = x + y | Addition |
| x -= y | x = x – y | Subtraction |
| x *= y | x = x * y | Multiplication |
| x /= y | x = x / y | Division |
| x %= y | x = x % y | Modulus |
| a .= b | a = a . b | Concatenate two strings |
The basic Incrementing/Decrementing Operators in PHP is use to increse or decrese value of operand by one, performing this operator we use (” ++ or — “) Signe.
| Operator | Name | Description |
|---|---|---|
| ++ x | Pre-increment | First increments x by one, then returns value of x |
| x ++ | Post-increment | First returns value of x, then increments x by one |
| — x | Pre-decrement | First decrements x by one, then returns value of x |
| x — | Post-decrement | First returns value of x, then decrements x by one |
Basicaly Comparison operators use to compare two values such as ” x==y “. mostaly comparison operators are use in conditions statement
| Operator | Name | Description | Example |
|---|---|---|---|
| x == y | Equal | Return true if x is equal to y | 5==8 returns false because of both valuse not equals |
| x === y | Identical | Return true if x is equal to y, and they are of same type of datatype. | 5===”5″ returns false because second valuse is a string and first is int. |
| x != y | Not equal | Return true if x is not equal to y | 5!=8 returns true because both values not equal |
| x <> y | Not equal | return true if x is not equal to y | 5<>8 returns true because both values not equal |
| x !== y | Not identical | Return true if x is not equal to y, or they are not of same type of datatype. | 5!==”5″ returns true because both values or thier datatype not equal. |
| x > y | Greater than | Return true if x is greater than y | 5>8 returns false because 5 is less then 8 |
| x < y | Less than | Return true if x is less than y | 5<8 returns true because here 5 is less then 8. |
| x >= y | Greater than or equal to | Return true if x is greater than or equal to y | 5>=8 returns false because 5 is not a greater nor equal to 8. |
| x <= y | Less than or equal to | Return true if x is less than or equal to y | 5<=8 returns true because 5 is less then 8. |
| Operator | Name | Description | Example |
|---|---|---|---|
| x and y | And | Return true if both x and y are true | x=6 y=3 (x < 10 and y > 1) returns true |
| x or y | Or | Return true if either or both x and y are true | x=6 y=3 (x==6 or y==5) returns true |
| x xor y | Xor | Return true if either x or y is true, but not both | x=6 y=3 (x==6 xor y==3) returns false |
| x && y | And | Return true if both x and y are true | x=6 y=3 (x < 10 && y > 1) returns true |
| x || y | Or | Return true if either or both x and y are true | x=6 y=3 (x==5 || y==5) returns false |
| ! x | Not | Return true if x is not true | x=6 y=3 !(x==y) returns true |