Why is there a horizontal line in the middle of mcrypt_get_block_size program?

Question

When writing interface encryption, why is there a horizontal line in the middle of the code? Is it unusable?
Or is it that the code cannot be used after it is uploaded to the server?

王林 · Answer

This function is obsolete, please check the manual

Why is there a horizontal line in the middle of mcrypt_get_block_size program?

reply all(1)I'll reply