What is PHP?

Correct Answer: The mysqli extension , or as it is sometimes known, the MYSQL improved extension ,was developed to take advantage of new features found in MYSQL systems versions 413 and later The mysqli extension has a number of benfits,the key enhancements over the mysql extension being: => Object-oriented interface => Support for prepared statements => Support for multiple statements => Support for transactions => Enhanced debugging capabilities => Embedded server support

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

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

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

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

Correct Answer: PEAR(PHP Extension and Application Repository) is a framework and repository for reusable PHP components PEAR is a code repository containing all kinds of php code snippets and libraries PEAR also offers a command-line interface that can be used to automatically install "packages"

Correct Answer: echo() and print() are language constructs in PHP, both are used to output strings The speed of both statements is almost the same echo() can take multiple expressions whereas print cannot take multiple expressions Print return true or false based on success or failure whereas echo doesn't return true or false

Correct Answer: $message is a variable with a fixed name $$message is a variable whose name is stored in $message If $message contains "var", $$message is the same as $var

Correct Answer: Notices, Warnings and Fatal errors are the types of errors in PHP Notices: Notices represents non-critical errors, ie accessing a variable that has not yet been defined By default, such errors are not displayed to the user at all but whenever required, you can change this default behavior Warnings: Warnings are more serious errors but they do not result in script termination ie calling include() a file which does not exist By default, these errors are displayed to the user Fatal errors: Fatal errors are critical errors ie calling a non-existent function or class These errors cause the immediate termination of the script

Correct Answer: MIME - Multi-purpose Internet Mail Extensions MIME types represents a standard way of classifying file types over Internet Web servers and browsers have a list of MIME types, which facilitates files transfer of the same type in the same way, irrespective of operating system they are working in A MIME type has two parts: a type and a subtype They are separated by a slash (/) MIME type for Microsoft Word files is application and the subtype is msword, ie application/msword