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Php Questionaire : Php Training in Chandigarh

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Question To be discussed : PHP Training in Chandigarh 
What is PHP?
PHP is an open-source server-side scripting language that is commonly used for web applications.
What is Open Source Software?
Software in which the source codes are freely used, modified, and shared by anyone is called Open
 Source Software. These can also be distributed under licenses that adhere to the open source 
definition.
What is the difference between include(), include_once(), and require_once()?
The include() statement includes and evaluates a specified line i.e. it will include a file based on the 
given path. require() does the same thing except upon failure, it will generate a fatal error and halt the
 script whereas include() will just give a warning and allow the script to continue. require_once() will 
check if the file already has been included and if so, it will not include the file again.
Differences between GET, POST, and REQUEST methods
GET and POST are used to grant the instruction from applicants through b…