Mastering PHP Expressions and Operators: A Comprehensive Guide
Introduction
Operators are fundamental to performing operations in PHP, such as arithmetic calculations, comparisons, logical evaluations, and more PHP offers a rich set of operators that enable developers to perform various operations on variables, combine values, and create complex expressions. Understanding these operators is crucial for writing efficient and clean PHP code. In this guide, we’ll explore the essential PHP operators, their syntax, and practical examples to help you master them.
1. Arithmetic Operators
Arithmetic operators allow you to perform mathematical calculations.
| Operator | Name | Example | Result |
|---|---|---|---|
+ |
Addition | $a + $b |
Sum of $a and $b |
- |
Subtraction | $a - $b |
Difference between $a and $b |
* |
Multiplication | $a * $b |
Product of $a and $b |
/ |
Division | $a / $b |
Quotient of $a and $b |
% |
Modulus | $a % $b |
Remainder of $a divided by $b |
** |
Exponentiation | $a ** $b |
$a raised to the power of $b |
Example:
$a = 10;
$b = 3;
echo $a + $b; // Addition: 13
echo $a - $b; // Subtraction: 7
echo $a * $b; // Multiplication: 30
echo $a / $b; // Division: 3.3333
echo $a % $b; // Modulus (remainder): 1
echo $a ** $b; // Exponentiation: 1000
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Additional Resources
Course Guide
Comprehensive PDF guide with examples
GitHub Repository
Example code for all lessons
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