PHP PHP source

AI-powered detection and analysis of PHP source files.

📂 Code

🏷️ .php

🎯 text/x-php

🔍

Instant PHP File Detection

Use our advanced AI-powered tool to instantly detect and analyze PHP source files with precision and speed.

File Information

File Description

PHP source

PHP: Hypertext Preprocessor

What is a PHP file?

A PHP (.php) file is a server-side script written in PHP (PHP: Hypertext Preprocessor), a widely-used open source scripting language designed primarily for web development. PHP files can contain HTML, CSS, JavaScript, and PHP code, with PHP code executed on the server before the page is sent to the user's browser. PHP is embedded within HTML using special tags and is particularly well-suited for dynamic web page generation.

More Information

PHP was originally created by Rasmus Lerdorf in 1994 as "Personal Home Page" tools, but was later redeveloped by Andi Gutmans and Zeev Suraski and renamed to "PHP: Hypertext Preprocessor" in 1997. PHP has evolved into one of the most popular server-side scripting languages, powering millions of websites including major platforms like WordPress, Facebook (originally), Wikipedia, and many e-commerce sites.

PHP's popularity stems from its ease of learning, extensive documentation, large community, and seamless integration with databases and web servers. The language is platform-independent and can run on various operating systems including Linux, Windows, and macOS. PHP continues to evolve with regular releases that improve performance, add new features, and enhance security.

PHP Format

PHP code is embedded within HTML and follows specific syntax rules:

Basic Syntax

Opening tags - <?php or <?= for short echo tags
Closing tags - ?> (optional if file contains only PHP)
Variables - Start with $ symbol (e.g., $variable)
Statements - End with semicolons
Comments - //, #, or /* */ for multi-line
Case sensitivity - Variables are case-sensitive, keywords are not

Data Types

Scalar types - string, integer, float, boolean
Compound types - array, object, callable, iterable
Special types - resource, NULL
Type declarations - Optional type hints for parameters and returns
Dynamic typing - Variables don't need explicit type declaration

Key Features

Server-side execution - Code runs on the server
Database integration - Built-in support for many databases
Session management - Built-in session handling
File handling - Comprehensive file system functions
Object-oriented - Classes, inheritance, interfaces, traits
Error handling - Exceptions and error reporting

Common Patterns

<?php
// Basic PHP script
$name = "World";
$greeting = "Hello, " . $name . "!";

// Class definition
class User {
    private $username;
    
    public function __construct($username) {
        $this->username = $username;
    }
    
    public function getUsername() {
        return $this->username;
    }
}

// Database connection (PDO)
try {
    $pdo = new PDO('mysql:host=localhost;dbname=test', $user, $pass);
    $stmt = $pdo->prepare('SELECT * FROM users WHERE id = ?');
    $stmt->execute([$id]);
    $user = $stmt->fetch();
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}
?>

<!DOCTYPE html>
<html>
<head>
    <title><?php echo $greeting; ?></title>
</head>
<body>
    <h1><?php echo $greeting; ?></h1>
</body>
</html>