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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 −
<?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
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