What is config file in php?
Tell me how can we determine whether a php variable is an instantiated object of a certain class?
Explain about require and include function?
Are sessions stateless?
What is the maximum size of a database in mysql?
What is input sanitization in php?
what method is used to generate a random number?
What is the special meaning of __sleep and __wakeup?
How to join multiple strings into a single string?
Does php support multithreading?
How to convert the first character to upper case?
What is the difference between md5(), crc32() and sha1() crypto on php?
Explain php split() function.