How to give a random value to a class tag?

Question

PHP language program, in a web page article, gives random values ​​(and unique, non-repeating) to all <span class="*">test text</span> tags at the "*", no matter how many characters there are Any letters or numbers will do. For example: <span class="Hug5iR2NvjO9">Test text</span>

Answer 1

It mainly depends on how you use it. "*" can be used as a parameter, and php will generate a random number and then replace it

Answer 2

Can you explain it in more detail? Thank you.

Answer 3

Using css pseudo-classes