Introduction The concept of Super global variables was introduced in/after PHP 4.1.0. The superglobal variables are also known as Global Variables/Automatic Globals. Definition Super global variables are pre-defined, built-in variables & are of global scopes and hence always accessible from any function, class, file, etc. Features These variables can be used Read more…
Array Example : How the contents of the Index Array are Displayed in Php? Example : How are the contents of an Array Count in Php? Example : How the contents of an Array are Sort in Ascending Order in Php? Example : How the contents of an Array are Sort in Read more…
Example : How to use the if control statement in Php? Example : How to use an if-else control statement in Php? Example : How to use nested if-else control statement in Php? Example : How to use if-else if — else control statement in Php? Example : How to Read more…
Introduction It is the top and most advanced layer of the OSI model. This is the 7th layer of the OSI model. This is the higher layer of the OSI model. Features This layer defines the language and syntax that programs use to communicate with other programs. This layer represents Read more…
Introduction This is the 6th layer of the OSI model. This is the Upper layer of the OSI model. This layer lies in between the Session layer and the Application layer. Features In a computer network, different computers have different codes for representing character strings (e.g., ASCII, EBCDIC, Unicode, etc), Read more…
Introduction The session layer is the 5th layer of the OSI model. This layer lies in between the Transport layer and the Presentation layer. Features The session layer controls and coordinates the dialogues or data-exchange process between senders’ and receivers’ computers during communication in an orderly manner. This layer is Read more…
Introduction The transport layer is the 4th layer of the OSI model. This layer lies in between the Network layer and the Session layer. Features This layer acts as an interface between the bottom and top three layers. The lower data link layer (layer 2) is only responsible for delivering Read more…
Introduction of OSI Network Layer The network layer is the 3rd layer of the OSI model from the bottom side(Physical Layer). This layer lies in between the Data link layer and the Transport layer. Characteristics of OSI Network Layer The unit of data at the network layer is popularly called Data Read more…
Introduction This is the 2nd layer of the hierarchical OSI model. This layer lies in between the physical layer and the network layer. This is considered as the Lower layer of the OSI model. Features The Data Link Layer performs its functions in the LAN area mainly. The main network Read more…
Introduction The physical layer is the lowest layer/Layer 1 of the OSI model. Features The data units in this layer are called Signals(analog or digital) of Bits. The main network devices used/found in the Physical layer are a Repeater and Hub i.e., this layer does not work with devices having Read more…