PHP Operators
In this tutorial we will discuss the PHP operators and how they are used. There are five types of PHP operators; the assignment, arithmetic, comparison, logical and increment/decrement operators.- Assignment Operators
The assignment operators are used to assign a value to a PHP variable. For example I might want to assign the value of Diane to a variable named $MyName. There are four assignment operators.
| = | This assigns a value to the variable named $no
$no = 1; | | += | This assigns the value of $no +1 to the variable named $no
$no += 1; | | – = | This assigns the value of $no -1 to the variable named $no
$no – = 1; | | .= | This concatenates (adds to) two values together. In the example below I am adding the value of " Cipollo" to the $MyName variable. Remember that the value of $MyName is Diane.
$MyName .= " Cipollo";
Now the value of $MyName is Diane Cipollo. |
- Arithmetic Operators
There are five PHP arithmetic operators. But don't panic. It's just basic math.
| + | addition
This adds two values together.
$c = $a + $b; | | – | subtraction
This subtracts one value from another value.
$c = $a - $b; | | * | multiplication
This multiplies two values.
$c = $a * $b; | | / | division
This divides two values.
$c = $a / $b; | | % | modulus or remainder
This gives the remainder of two values.
$c = $a % $b;
Let's say the value of $a is 7 and the value of $b is 5. Then the value of $c would be the remainder which is 2. |
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