PHP Basics Interview Questions

🧾 PHP Basics – Interview Questions 🔹 1. Basic Questions (Very Important) 1️⃣ What is PHP?👉 PHP (Hypertext Preprocessor) is a server-side scripting language used to build dynamic websites. 2️⃣ What are variables in PHP?👉 Variables store data and start with $Example: 3️⃣ Is PHP case-sensitive?👉 Variables are case-sensitive ($name ≠ $Name)👉 Keywords are NOT […]

🧾 PHP Basics – Practice Questions 🔹 Level 1: Beginner 1️⃣ Create variables for: 2️⃣ Create two numbers and: 3️⃣ Write a PHP script to: 4️⃣ Create a constant named SITE_URL and assign your website URL. Then print it. 5️⃣ Identify the data type of these variables using var_dump(): 🔹 Level 2: Intermediate 6️⃣ Compare […]

🔹 1. Variables & Data Types ✅ Variables Variables are used to store data. 👉 In PHP, variables start with $ ✅ Rules: ✅ Data Types in PHP Type Example Description String “Hello” Text Integer 10 Whole numbers Float 10.5 Decimal numbers Boolean true/false True or false Array [“a”, “b”] Multiple values Object new ClassName() […]

🔹 1. Theory Questions 🔹 2. Output-Based Questions 👉 Predict the output: Q1 <?phpecho “Hello PHP”;?> Q2 <?php$name = “Aditya”;echo $name;?> Q3 <?php$a = 10;$b = 20;echo $a + $b;?> Q4 <?phpecho “10” + 5;?> Q5 <?phpecho “Hello” . ” World”;?> 🔹 3. Error Finding Questions 👉 Find and fix errors: Q1 <?phpecho Hello World;?> […]

✅ 1. What is PHP? PHP stands for Hypertext Preprocessor. 👉 Example: 👉 Output in browser: Hello World 📌 Key Uses: ✅ 2. History & Versions 📌 Important Versions: 👉 Current modern version: PHP 8+ ✅ 3. How PHP Works (Client vs Server) 📌 Flow: 👉 Diagram (simple): Browser → Server (PHP runs) → HTML […]

🧠 PHP Complete Syllabus (2026 Updated) 🔰 1. Introduction to PHP 🧾 2. PHP Basics 🔀 3. Control Structures 🔁 4. Loops 📦 5. Functions 📚 6. Arrays 🔤 7. Strings 📂 8. Forms Handling 🍪 9. Cookies & Sessions 🗄️ 10. File Handling 🧱 11. Object-Oriented PHP (OOP) 🔌 12. Database (MySQL) 🔐 13. […]

To use the zobo.php-intellisense extension with XAMPP, you must first install the extension in Visual Studio Code and then ensure VS Code can find the PHP executable provided by XAMPP.  Step 1: Install the Extension in VS Code Step 2: Configure the PHP Executable Path  The extension needs to know where your PHP installation (which comes with […]

To get the domain from a URL in PHP, the built-in parse_url() function is the recommended method.  Using parse_url() (Recommended)  The parse_url() function can extract various components of a URL string, including the host.  php Note: If the input URL is missing the scheme (http:// or https://), parse_url() might not work as expected. You can add a default scheme if one is not present in the […]

To extract a substring in PHP based on the first occurrence of another matching substring or character, you can use a combination of the built-in functions strpos() and substr(), or the specialized function strstr().  Here are the most common methods: Method 1: Using strpos() and substr() This method is highly flexible and works across all PHP versions. strpos() finds the position of the first […]

To truncate a string in PHP if its length exceeds a specified limit, the substr() function is commonly used. Here is an example of how to truncate a string and append an ellipsis if it exceeds a certain length: In this example: