HimalayaMinds/php-fundamentals

Welcome to the PHP Fundamentals repository! This repository is designed to help you learn and practice the basics of PHP programming language.

🚀 #PHP #PhpFundamentals #PhpBasic #OpenSource

• PHP (Hypertext Preprocessor) is a server-side scripting language widely used for web development.
• Executed on the server, PHP generates dynamic content before sending it to the browser.

• PHP code is embedded within HTML.
• Start with <?php and end with ?>.

<?php
   // PHP code here
?>

In the context of mathematics, computer science, and programming, a variable is a symbolic name or identifier associated with a value that may be changed during the execution of a program. Essentially, it is a storage location (typically in computer memory) paired with an associated symbolic name (an identifier), which contains some known or unknown quantity or information referred to as a "value."

• Prefix with $.
• Case-sensitive.
• No need to declare data types.

$name = "John";
$age = 25;

• Strings, Integers, Floats, Booleans, Arrays, Objects, NULL.

• Arithmetic, Assignment, Comparison, Logical, Increment/Decrement.

$x = 10;
$y = 5;
$sum = $x + $y;

• if, else, elseif.

$grade = 85;
if ($grade >= 60) {
   echo "Pass";
} else {
   echo "Fail";
}

• for, while, do-while, foreach.

for ($i = 0; $i < 5; $i++) {
   echo $i;
}

• Reusable blocks of code.
• Defined using function.

function greet($name) {
   echo "Hello, $name!";
}

• Ordered maps.
• Numerical and associative arrays.

$colors = array("Red", "Green", "Blue");
$info = array("name" => "John", "age" => 30);

• Reading and writing to files.

$file = fopen("example.txt", "r");
echo fread($file, filesize("example.txt"));
fclose($file);

• Using mysqli or PDO for database interactions.

$conn = new mysqli("localhost", "username", "password", "database");

• Protect against SQL injection and XSS attacks.
• Use prepared statements for database queries.

$stmt = $conn->prepare("INSERT INTO table (column) VALUES (?)");
$stmt->bind_param("s", $value);
$stmt->execute();

These notes cover the basics of PHP, but there's much more to explore. PHP is versatile and widely used for web development, from simple scripts to complex applications.

For in-depth learning, refer to the official PHP Documentation and explore real-world projects. Happy coding!

This repository is licensed under the MIT License, allowing for widespread use and collaboration.

For any questions, feedback, or collaboration inquiries, feel free to reach out:

• Email: [email protected]

Feel free to customize the content as needed to better suit your repository and audience. Let me know if you need further assistance!