Every object has properties and methods corresponding to those of its parent class. Every object instance is completely independent, with its own properties and methods, and can thus be manipulated independently of other objects of the same class.
Tip: The data elements stored within an object are referred to as its properties and the information, or code which describing how to process the data is called the methods of the object. A variable of type NULL is a variable without any data. NULL is the only possible value of type null. Is this website helpful to you? Please give us a like , or share your feedback to help us improve. Connect with us on Facebook and Twitter for the latest updates. Example Run this code ». Note that a variable may be evaluated with different values in certain situations, depending on what type it is at the time.
For more information, see the section on Type Juggling. The type comparison tables may also be useful, as they show examples of various type-related comparisons. Booleans ». They are sequences of characters, like "PHP supports string operations".
Following are valid examples of string. Singly quoted strings are treated almost literally, whereas doubly quoted strings replace variables with their values as well as specially interpreting certain character sequences.
There are no artificial limits on string length - within the bounds of available memory, you ought to be able to make arbitrarily long strings. Scope can be defined as the range of availability a variable has to the program in which it is declared. Previous Page. Next Page. Live Demo. Previous Page Print Page.
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