What are the functions of echo in PHP?

In PHP, the purpose of the echo function includes the following:

1. You can display a string or variable using the “echo” function, which will show it in the browser. For example: echo “Hello World!”; or echo $name;
2. Displaying HTML Tags: In PHP, you can use echo to output HTML tags in order to display dynamically generated HTML content in the browser. For example: echo “”
3. Greetings
4. I hope you have a wonderful day’s shopping.
5. Output multiple values: The echo statement can output multiple values at once by separating them with commas. For instance, echo “Hello”, $name, “!”;
6. Output array: You can print the values of an array using echo. For example: echo $arr[0];
7. Print the result of the expression: echo can output the results of various expressions, including mathematical operations, logical operations, etc. For example: echo 5 + 3;

It is important to note that echo is not a function but a language construct, so it can be used without parentheses. Additionally, echo has better performance than print because it does not return any value.