PHP

Create a variable named txt and assign the value "Hello".

Create one variable named x, and one variable named y, then use the echo statement to output the sum of x and y.

What kind of variable is being declared within a function and can be accessed within a function only?

Get the length of the string "This is a string".

Reverse the string "Random".

Replace the word "World" with the word "Dolly".

Repeat the string a specific number of times.

Find the last character of the string "This is new".

Show the difference between ltrim() and rtrim() with an example.

How to get the position of the character in a string. Use an example.

How to read each character of a string. Use an example.