PHP interview questions | PHP coding test questions and answers !!
In Today's video we are going to talk about the php interview questions and php coding test questions and answers, what are common questions interviewer ask when they hire a php developer, php is considered as one of the best server side scripting language, due to its popularity in web developement, open source and large community support , 100 php interview questions are present but we are discuss some of few from it, whether you are 1 year experience and want to learn php interview questions or 2 year experience or basic interview questions on php, this video is specifically designed for you guys !!
Question: What is the difference between == and === in PHP?
Solution: == checks for equality after type coercion, while === checks for equality without type coercion.
Question: Explain the purpose of the unset() function in PHP.
Solution: unset() is used to unset a variable, making it no longer set and freeing up the associated memory.
Question: How does PHP handle sessions, and what is the significance of session_regenerate_id()?
Solution: PHP manages sessions through cookies or URL parameters. session_regenerate_id() is used to regenerate the session ID to enhance security.
Question: What is the difference between include() and require() in PHP?
Solution: include() includes a file and continues script execution even if the file is not found, while require() terminates the script if the file is not found.
Question: Explain the purpose of the __construct() method in PHP classes.
Solution: __construct() is a special method in PHP classes used for initializing object properties or performing other setup tasks when an object is created.
Question: What is the purpose of the htmlspecialchars() function in PHP?
Solution: htmlspecialchars() is used to convert special characters to their HTML entities, preventing XSS (Cross-Site Scripting) attacks.
Question: How can you prevent SQL injection in PHP?
Solution: Use prepared statements and parameterized queries, or use parameterized functions like mysqli_real_escape_string() to sanitize user input before incorporating it into SQL queries.
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