Discuss about special data types used in PHP.

1.	Discuss about special data types used in PHP.
Answer» Special data types Null: Special data type with value NULL. This is the default value to a variable, if we do not set a value to it. $m=null; Array: Array is a collection of elements. With the same name we can store many elements. Three types of array – Indexed array: Associated array: Multidimensional array: Object: Similar in C++ and must be declared explicitly. At first a class is declared and then objects can be created using the command ‘new’. Resources: It is not an actual data type rather it is a special variable that hold references to file handler, data base object, etc.

Answer»

Special data types

Null: Special data type with value NULL. This is the default value to a variable, if we do not set a value to it.

$m=null;

Array: Array is a collection of elements. With the same name we can store many elements.

Three types of array –

Object: Similar in C++ and must be declared explicitly. At first a class is declared and then objects can be created using the command ‘new’.

Resources: It is not an actual data type rather it is a special variable that hold references to file handler, data base object, etc.

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