Presentation........ 2........PHP
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What is PHP?
PHP's full form is Hypertext Preprocessor. It is a general-purpose scripting language. It’s used for web 
development and business applications. This is free to download and use. This is one of the most 
preferred languages for creating interactive websites and web applications. It is deep enough to run large 
social networks. include text HTML, CSS, JavaScript, and PHP code. Many frameworks and Content 
Management system are based on PHP. The most used CMS WordPress is base on PHP. 
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What is a Scripting Language?
A scripting language is a programming language. PHP is an open-source server-side scripting language. PHP is a server-side 
scripting language, which means that the scripts are executed on the server (the computer where the Web site is 
located)Because PHP scripts execute on the server. 
       
 There are two types:-
 Server side scripting
 Client side scripting
What can PHP do?
It can generate dynamic page content, create, open, read, 
write, delete, and close files on the server and collect form 
data. It can add, delete, modify data in your database and 
control user-access.
Where are the uses of PHP?
It is used in many fields like managing dynamic content, 
databases, session tracking, and even building entire e-
commerce sites. PHP is mainly used for design server side 
applications. 
Seven global websites using PHP:-
 Facebook
 Wikipedia
 Tumblr
 Slack
 Mail Chimp
 Etsy
 WordPress
Benefits / Advantage of PHP
It large choice of available specialists, Plentiful documentation, 
Improved loading speed, Wide selection of databases, 
Inexpensive open-source software, Cheaper hosting services, 
excellent combinability with html, Good flexibility, 
compatibility with cloud services.
Speed:-
It is relatively fast, since it uses not much system resources.
Open Source and free of cost:-
One can download it anywhere and readily use it for web 
applications development and get it for free.
Flexible:-
People can readily use it to combine its function with various 
other programming languages.
Efficient Performance:-
It can also be used for creating a large number applications.
It is scalable when used for writing codes.
Easy Integration and Compatibility:-
It can easily run on different platforms, including UNIX, Solaris 
and Linux.
Disadvantage of PHP
It doesn't allow change or modification in core behavior of 
online applications, It is not suitable for giant content-based 
web applications. It has a weak type, which can cause incorrect 
data and knowledge to the user.
Security issues:-
Because PHP is open source, it is not secure. The ASCII text file 
is easily available, and anyone can look it to up.
Poor Error Handling:-
PHP has a poor quality of handling errors, Lacks debugging 
tools, which are needed to search for errors and warnings. PHP 
has less number of debugging tools when compared to other 
programming languages.
Not Suitable:-
PHP is not to suitable large applications mainted. hard to 
maintain since it is not very modular.
Weak Type:-
Implicit conversion many surprise unwary programmers and 
lead to unexpected bugs.