PHP Course For Beginners > Superglobal Variables in PHP

Super Global Variable in PHP

47.2k

The Super Global Variable is considered as a variable that is available in every function, class, and file. It allows you to share information across different parts of your script file.

Super Global Variables provide a lot of benefits over traditional global variables:

  • They make it easier for you to use functions and classes in your code without worrying about how the data is being stored and accessed.
  • They provide better performance and scalability as their value is not stored in memory anymore.
  • Super Global Variables help you write more modular code as you can use them in any function or class without having to worry about how it is being stored and accessed.

  • A Super Global Variable is a variable that can be accessed anywhere in your script. It can be used to store data and execute commands.
  • There are different ways to use a Super Global Variable in your scripts. The easiest way is to use it as a placeholder for text that you want to be globally visible throughout the script.

A Super Global Variable is a variable that is shared by all other variables of the same type:

  • One disadvantage of using a Super Global Variable is that it can lead to errors. For example, if you have two variables defined as a string and one variable defined as a number, then the value of the number variable will be converted to strings when it is assigned to the string variable.

  • A super global variable is a global variable that can be accessed from anywhere in the program.
  • The disadvantage of using a super global variable is that it makes your code less readable and harder to debug.

Learner's Ratings

4.2

Overall Rating

  • 63%
  • 21%
  • 7%
  • 5%
  • 4%

Reviews

S
Shibu Kumari
5

Very Good

R
Rajiv Kumar Singh
4

It would have been better if you could have provided the resource/source_code files of the CRUD operations so that we could have cross verified our code with yours.

D
Dravinanshu Mishra
5

Excellent for Bigners.

A
Awais Khan
5

Thanks

M
Muhammad Arif jamal
5

This course is very helpful for me

S
Shital Kadam
5

Thank you, sir, for providing the best course on the internet.

D
Dibyadarshini Das
4

I'm getting a fatal error insted of warning and also it's not showing the if condition statement.

Aniket saini
5

must watch course to start with.

G
Gangasagar Prajapati
5

excellent

R
RAVAN RATHORE
5

Good

Show More
Recommended Courses
Course Content

  1. Introduction to PHP
    10m 23s
  2. Understanding SDLC Process
    13m 58s
  3. How to use LearnVern
    3m 20s
  4. Client Server Architecture
    5m 18s
  5. How to set up PHP Environment?
    18m 6s

  1. What is Data
    8m 57s
  2. What is Database
    3m 25s
  3. What is DBMS
    14m 25s
  4. SQL Queries and its types
    16m 57s
  5. Data Types in SQL - from 16
    22m 41s
  6. SQL constraints
    10m 52s
  7. Create, Drop & Show Database
    13m 40s
  8. SQL Create Table
    13m 53s
  9. SQL Insert & Select Statement
    26m 56s
  10. Operators in SQL
    6m 47s
  11. In & NOt in Condition
    7m 4s
  12. Null & Not Null Condition
    4m 55s
  13. Clauses in SQL
    9m 46s
  14. Understanding Having, Distinct & Group by
    21m 54s
  15. Update & Delete in SQL
    12m
  16. Alter table command in SQL
    15m 29s
  17. MySQL Rename truncate Drop
    6m 34s
  18. Understanding Foreign key
    15m 37s
  19. MySQL joins
    22m 56s
  20. MySQL views
    18m 23s
  21. MySQL Function
    21m 39s
  22. MySQL Procedure
    15m 33s
  23. MySQL Trigger
    16m 15s
  24. Normalization
    16m 9s
  25. Assignment : MYSQL
    8m 56s

  1. Understanding HTTP Methods
    33m 26s

  1. Understanding PHP Program structure Comments in PHP
    13m 7s

  1. Variables in PHP
    11m 46s

  1. Arithmetic & Assignment Operators in PHP
    24m 28s
  2. Comparison & Logical Operators in PHP
    33m 17s
  3. Ternary Operator in PHP
    14m 38s
  4. Assignment : Operators
    1m 22s

  1. Super Global Variable in PHP
    19m 30s
  2. GET & POST Variable in PHP
    12m 21s
  3. $_FILES & $_ENV in PHP
    15m 24s
  4. Assignment : Super Global Variables
    2m 16s

  1. If-else in PHP
    26m 25s
  2. switch case in PHP
    15m 2s
  3. Assignment : Conditional Statements
    2m 28s

  1. Functions in PHP
    39m 46s
  2. Call by value vs Call by reference in PHP
    17m 28s
  3. Assignment : Functions
    5m 25s

  1. Array Functions in PHP
    44m 28s
  2. Array in PHP
    19m 35s
  3. Assignment : Array
    7m 18s

  1. String and its Functions in PHP
    27m 53s
  2. Assignment : String
    3m 44s

  1. Loops in PHP
    19m 28s
  2. More examples on Loops in PHP
    17m 20s
  3. Assignment : Loops
    8m 32s

  1. Cookies in PHP
    15m 45s
  2. Session in PHP
    35m 42s

  1. Header Function in PHP
    17m 11s
  2. Assignment : Header Functions
    1m 57s

  1. Date and Time functions in PHP
    36m 14s
  2. Assignment : Date Time Functions
    4m 29s

  1. Include & Require Statement in PHP
    13m 52s

  1. Error Handling in PHP
    15m 18s

  1. File Upload in PHP
    42m 55s

  1. Database Connection in PHP Part 1
    29m 17s
  2. Database Connection in PHP Part 2
    32m

  1. SQL Injection in PHP
    30m 33s

  1. Crud - Registration and DB connection Part 1
    31m 31s
  2. Crud - Registration and DB connection Part 2
    24m 2s
  3. Log in Operation
    27m 24s
  4. Read Operation
    30m 27s
  5. Update Operation Part 1
    12m 53s
  6. Update Operation Part 2
    27m 17s
  7. Log out Operation
    9m 29s

  1. MySQL Interview Question 1
    33m 7s
  2. MySQL Interview Question 2
    25m 23s
  3. MySQL Interview Question 3
    24m 27s
Enroll For Free