What is difference between MyISAM and InnoDB storage engines in mysql.

Correct Answer: The dba_insert() function adds a record to a database

Correct Answer: The Apache configuration file is called httpdconf

Correct Answer: A PHP filter is used to validate and filter data coming from insecure sources To test, validate and filter user input or custom data is an important part of any web application The PHP filter extension is designed to make data filtering easier and quicker

Correct Answer: PHP?s configuration file is called phpini

Correct Answer: CONSTRUCTOR : PHP allows developers to declare constructor methods for classes Classes which have a constructor method call this method on each newly-created object, so it is suitable for any initialization that the object may need before it is used DESTRUCTORS : PHP 5 introduces a destructor concept similar to that of other object-oriented languages, such as C++ The destructor method will be called as soon as all references to a particular object are removed or when the object is explicitly destroyed or in any order in shutdown sequence

Correct Answer: The header() function sends a raw HTTP header to a client We can use header() function for redirection of pages It is important to notice that header() must be called before any actual output is seen

Correct Answer: By using $_SERVER['REMOTE_ADDR'], $_['HTTP_REFERER'] etc

Correct Answer: unlink()-deletes the given file from the file system unset() -makes a variable undefined

Correct Answer: sort() , rsort(), asort() ksort() , usort() arsort() , uksort() natsort() , natcasesort() array_multisort()

Correct Answer: As far PHP concern it only support single Inheritance in scripting we can also use interface to achieve multiple inheritance