You can use assignment operators in PHP to assign values to variables. Assignment operators are shorthand notations to perform arithmetic or other operations while assigning a value to a variable. For instance, the “=” operator assigns the value on the right-hand side to the variable on the left-hand side.
Additionally, there are compound assignment operators like +=, -= , *=, /=, and %= which combine arithmetic operations with assignment. For example, “$x += 5” is a shorthand for “$x = $x + 5”, incrementing the value of $x by 5. Assignment operators offer a concise way to update variables based on their current values.
The following table highligts the assignment operators that are supported by PHP −
| Operator | Description | Example |
|---|---|---|
| = | Simple assignment operator. Assigns values from right side operands to left side operand | C = A + B will assign value of A + B into C |
| += | Add AND assignment operator. It adds right operand to the left operand and assign the result to left operand | C += A is equivalent to C = C + A |
| -= | Subtract AND assignment operator. It subtracts right operand from the left operand and assign the result to left operand | C -= A is equivalent to C = C – A |
| *= | Multiply AND assignment operator. It multiplies right operand with the left operand and assign the result to left operand | C *= A is equivalent to C = C * A |
| /= | Divide AND assignment operator. It divides left operand with the right operand and assign the result to left operand | C /= A is equivalent to C = C / A |
| %= | Modulus AND assignment operator. It takes modulus using two operands and assign the result to left operand | C %= A is equivalent to C = C % A |
Example
The following example shows how you can use these assignment operators in PHP −
Open Compiler
<?php
$a = 42;
$b = 20;
$c = $a + $b;
echo "Addition Operation Result: $c \n";
$c += $a;
echo "Add AND Assignment Operation Result: $c \n";
$c -= $a;
echo "Subtract AND Assignment Operation Result: $c \n";
$c *= $a;
echo "Multiply AND Assignment Operation Result: $c \n";
$c /= $a;
echo "Division AND Assignment Operation Result: $c \n";
$c %= $a;
echo "Modulus AND Assignment Operation Result: $c";
?>It will produce the following output −
Addition Operation Result: 62
Add AND Assignment Operation Result: 104
Subtract AND Assignment Operation Result: 62
Multiply AND Assignment Operation Result: 2604
Division AND Assignment Operation Result: 62
Modulus AND Assignment Operation Result: 20