Where are the persistent cookies stored on your computer?
How to avoid the undefined index error?
How to pass an argument to a function?
Is it more secure to use cookies to transfer session ids?
How to test if a variable is an array?
How to convert a character to an ascii value?
What is the scope of a variable defined outside a function?
When viewing an html page in a browser, the browser often keeps this page in its cache. What can be possible advantages/disadvantages of page caching? How can you prevent caching of a certain page (please give several alternate solutions)?
How values in arrays are indexed?
What are form input html tags?
How to join multiple strings into a single string?
How to invoke a user function?
How to take a substring from a given string?
What is file upload?
How to create a table to store files?