What are the types of PHP comments?

PHP comments (Comments) have two types:

One is a single-line comment, the other The first is a multi-line comment.

PHP single-line comment syntax (Recommended learning: PHP programming from entry to proficiency)

All "//" symbols on the right side of a line The text is treated as a comment because the PHP parser ignores everything to the right of the line "//". An example is as follows: You can also write only comments in one line without writing code, as follows:

PHP multi-line comment syntax

PHP multi-line comments start with "/*", End with "*/". Between "/*" and "*/", you can write multiple lines of comments. The example is as follows, the red part is the content of multi-line comments.

Block comments

Block comments are typically used to provide descriptions of files, methods, data structures, and algorithms.

Block comments are placed at the beginning of every file and before every method; they can also be used elsewhere, such as inside methods.

Block comments inside functions and methods should have the same indentation format as the code they describe.

There should be a blank line at the beginning of the block comment to separate the block comment from the code, for example: /* * Here is the block comment*/, the block comment can start with /*-, so indent (C language formatting code) can recognize it as the beginning of a code block without rearranging it.

 /*- * 如果想被忽略，可是使用特别格式的块注释 *
 * one * 　　
  * two *
 *three */

Note: If you do not use indent (C language formatting code), you do not have to use /*- in your code, or other people may run indent (C language formatting code).

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