PHP

PHP is an open-source, server-side scripting language designed for web development. A PHP file is processed by the web server or PHP-FPM, which runs the code and sends the resulting HTML or JSON to the browser. The name originally stood for Personal Home Page and now recursively expands to "PHP: Hypertext Preprocessor".

Why it matters

PHP runs a very large portion of the web, including WordPress, Drupal and Magento, and it is supported by nearly every shared hosting plan. Modern PHP (version 8 and later) has types, attributes, enums and a JIT compiler, and frameworks such as Laravel and Symfony provide structured application development. Its history of inconsistent function names and insecure beginner code gave it a mixed reputation, but current practice is far stricter.

Example

<?php
$name = $_GET['name'] ?? 'guest';
echo "Hello, " . htmlspecialchars($name);

For ?name=Ana the page prints Hello, Ana. htmlspecialchars escapes the input so it cannot inject markup.

Common mistakes

• Building SQL queries by concatenating user input instead of using prepared statements.
• Echoing user data without escaping, which allows cross-site scripting.
• Running an end-of-life PHP version that no longer gets security patches.

Related

• वर्डप्रेस
• SQL injection
• XSS
• Web server

यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.