|
Question: How can you handle errors and exceptions in PHP?
|
Answer: The Errors in PHP can be handled using error handling functions like 'error_reporting()' and 'ini_set()'.
Exceptions, on the other hand, are handled using try, catch, and finally blocks.
One can throw exceptions using the throw statement and catch them using catch blocks
to gracefully handle errors and exceptions in PHP applications.
|
|
Question: What is the difference between 'unset()' and 'unlink()' functions in PHP?
|
Answer: The 'unset()' is used to unset a variable or multiple variables in PHP, freeing up memory.
'unlink()', on the other hand, is used to delete a file from the file system.
|
|
Question: Can you explain the use of namespaces in PHP?
|
Answer: The Namespaces in PHP are used to avoid naming conflicts between classes, functions, and constants.
They provide a way to group related classes, interfaces, functions, and constants under a specific namespace, allowing for
better organization and avoiding naming collisions.
|
|
|
|
|
|
Question: How do you handle file uploads larger than the default maximum size in PHP?
|
Answer: One can increase the maximum file upload size in PHP by modifying the php.ini file and adjusting the values
of the 'upload_max_filesize' and 'post_max_size directives'.
Alternatively, you can also adjust these settings at runtime using the 'ini_set()' function in your PHP script.
|
|
Question: Can you explain the difference between a session and a cookie in PHP?
|
Answer: A session in PHP stores data on the server-side and is identified by a unique session ID, typically
passed between the server and client via cookies or URLs.
Cookies, on the other hand, are small pieces of data stored on the client-side (browser) and sent back to the server
with each request.
Sessions are generally more secure for storing sensitive data compared to cookies.
|
|
Question: What is the purpose of the $_SERVER superglobal in PHP?
|
Answer: The '$_SERVER' superglobal in PHP contains information about the server environment, request headers,
paths, and script locations.
It allows you to access server-related information such as the request method, server name, script filename, and more.
|
|
Question: Can you explain the use of the foreach loop in PHP?
|
Answer: The foreach loop in PHP is used to iterate over arrays and objects.
It allows you to loop through each element of an array or each property of an object without explicitly initializing
an index variable or counting the number of elements.
|
|
|
|
|
|
Question: What is the purpose of the 'setcookie()' function in PHP?
|
Answer: The 'setcookie()' function in PHP is used to set a cookie in the client's browser.
It takes parameters such as the cookie name, value, expiration time, path, domain,
and whether the cookie should be transmitted over HTTPS only.
|