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PHP Variables
PHP Data Types
PHP Echo & Print
PHP Strings
PHP Numbers
PHP Constants
PHP Operators
PHP if...else...elseif Statements
Switch Statement
PHP Loops
PHP Arrays
Superglobals
PHP Coding Standards
PHP Form Handling
PHP Form Validation
PHP URLs Validation
PHP Form Required Validation
Complete Form Example
PHP File Functions Open/Read
PHP File Create/Write
PHP File Upload
PHP Cookies Handling
PHP Session Handling
PHP filter_var() Function
PHP Validation Filters
PHP Sanitization Filters
Using Filters
Filters Advanced
JSON
PHP Date and Time
MySQL Database
MySQL Connect
MySQL Commands-Creating a Table
MySQL Commands-Inserting The data
MySQL Commands-Prepared Statement
MySQL Commands-Selecting The Data
MySQL Commands-Where and Order By
MySQL Commands-Deleting And Updating The Data
PHP-OOP Introduction
PHP-Classes/Objects
PHP-Constructor/Destructor
PHP-Access Modifiers
PHP-Inheritance
PHP-Inheritance and Protected Access Modifier
PHP-Overriding Inherited Methods
PHP-Final keyword
PHP-Abstract Classes
PHP-Constants
PHP-Traits
PHP-Static Methods and Properties
Introduction to Functions
Defining A function
Returning Values From A Function
Dynamic Function Calls
Variable Scope
Understanding Arguments Or Parameters
Testing For A Function Existence
Returning Multiple Values From A Function
Making practical Use By Building Code Libraries For Code Re-usability
Using Include() And Require()
XML stands for Extensible Markup language and it defines a set of rules to encode a document in a human readable and machine-readable format. XML parsers are designed to read XML language and to create a way so that programs can use XML. Many of the web technologies like RSS feeds or podcasts are commonly written in XML as it is easy to create. You can make your own tags in XML.
To update, read, create or manipulate an XML document, XML parser is very useful. There are two types of parsers in PHP.
Tree Based Parsers – It holds the entire document in memory and transforms it into a tree structure by providing access to tree elements(DOM). It is useful for small XML documents as it causes performance issues for large XML files. Example of tree-based parsers are SimpleXML and DOM.
Event Based Parsers – It doesn’t hold the entire document in the memory and read one node at a time. It allows you to interact in real time and once you go to another node, the old one is removed from memory. It is good for large XML documents. Example are XML Reader and XML Expat Reader.
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