Getting Started with PHP Operators

Understanding PHP Operators

PHP operators are used to perform operations on variables and values. They can be categorized into several types:

1. Types of PHP Operators

PHP provides several operators, which can be divided into the following categories:

• Arithmetic Operators - Perform basic arithmetic operations like addition, subtraction, etc.
• Assignment Operators - Assign values to variables.
• Comparison Operators - Compare two values and return a boolean result.
• Logical Operators - Perform logical operations.
• Increment/Decrement Operators - Increment or decrement a variable's value.
• Array Operators - Work with arrays.

2. Example Usage of Arithmetic Operators

The following example demonstrates the use of arithmetic operators in PHP:

<?php
$var1 = 10;
$var2 = 5;

echo "Addition: " . ($var1 + $var2) . "<br>";
echo "Subtraction: " . ($var1 - $var2) . "<br>";
echo "Multiplication: " . ($var1 * $var2) . "<br>";
echo "Division: " . ($var1 / $var2) . "<br>";
echo "Modulus: " . ($var1 % $var2) . "<br>";
?>

Output:

3. Example Usage of Comparison Operators

The following example demonstrates the use of comparison operators:

<?php
$var1 = 10;
$var2 = 20;

echo "Is \$var1 equal to \$var2? " . ($var1 == $var2 ? 'Yes' : 'No') . "<br>";
echo "Is \$var1 not equal to \$var2? " . ($var1 != $var2 ? 'Yes' : 'No') . "<br>";
echo "Is \$var1 greater than \$var2? " . ($var1 > $var2 ? 'Yes' : 'No') . "<br>";
echo "Is \$var1 less than \$var2? " . ($var1 < $var2 ? 'Yes' : 'No') . "<br>";
?>

Output:

4. Example Usage of Increment/Decrement Operators

The following example demonstrates the use of increment and decrement operators:

<?php
$var = 5;

echo "Initial value: " . $var . "<br>";
echo "Incremented value: " . ++$var . "<br>";
echo "Decremented value: " . --$var . "<br>";
?>

Output:

PHP operators are fundamental to performing various operations in programming. Understanding them allows you to manipulate values effectively in your PHP scripts.