PHP Bangla Tutorial Part 26 String Functions (strtolower and strtoupper)

PHP=Hypertext Preprocessor.
PHP is a server-side scripting language.
PHP first name was a personal home page. Check this video: youtu.be/szeN3leeKaY

Using PHP, we can easily create a dynamic website. As an example- Facebook, Yahoo, Flickr are created using PHP.

Dynamic means what user want and change feature demand of the user. Facebook is the best example of a dynamic website.

Scripting language script means another language of the program.

This tutorial I discuss PHP functions(built-in functions and user define functions).So what is built in function and what is user define functions?

1)Built in function: There are one thousand more built functions in PHP. When PHP program started that time built in function not enough but at present PHP built-in functions cross one thousand.Example- strlen

2)User-define functions: User define functions create a user. Think you are a user now you use any function as an example -name().So without built-in functions which function user create that is call user define functions.

This tutorial I describe two example built in function and user define functions.strtolower and strtoupper function is a string function. strtolower function Make a string lowercase and strtoupper Make a string uppercase.

User define functions sometimes to write functions argument. But without argument, we can declare/call functions.

Important Video Link: youtube.com/watch?v=MwIhHXCUvjc&list=PLXrLl…


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Thanks for watching.Check this video: youtu.be/szeN3leeKaY