PHP Assignment Operators: Efficient Variable Assignments
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Table of Content:
The PHP assignment operators are used with numeric values to write a value to a variable.
The basic assignment operator in PHP is "=". It means that the left operand gets set to the value of the assignment expression on the right.
| Assignment | Same as... | Description |
|---|---|---|
| x = y | x = y | The left operand gets 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 |
Example: The left operand gets set to the value of the expression on the right
Code:
<!DOCTYPE html> <html> <body> <?php $x = 10; echo $x; ?> </body> </html>
Output:
This will produce the following result
10
Example: Addition
Code:
<!DOCTYPE html> <html> <body> <?php $x = 20; $x += 100; echo $x; ?> </body> </html>
Output:
This will produce the following result
120
Example: Subtraction
Code:
<!DOCTYPE html> <html> <body> <?php $x = 50; $x -= 30; echo $x; ?> </body> </html>
Output:
This will produce the following result
20
Example: Multiplication
Code:
<!DOCTYPE html> <html> <body> <?php $x = 10; $y = 6; echo $x * $y; ?> </body> </html>
Output:
This will produce the following result
60
Example: Division
Code:
<!DOCTYPE html> <html> <body> <?php $x = 10; $x /= 5; echo $x; ?> </body> </html>
Output:
This will produce the following result
2
Example: Modulus
Code:
<!DOCTYPE html> <html> <body> <?php $x = 15; $x %= 4; echo $x; ?> </body> </html>
Output:
This will produce the following result
3