PHP programmers will often wonder how to comment PHP code so it's readable and valid when executed by other programs. PHP comments are typically ignored by the PHP interpreter, so the interpreter will not attempt to execute any code written within a comment. In fact, in general, the code is written very clearly and cleanly enough so it was pretty obvious what the code is doing. If you have comments in your PHP code, you should know how to comment it so it is equally clear and coherent between your program and others.

PHP has some peculiarities regarding comments. In PHP, a PHP comment can be seen just as an ordinary comment, however, single-line comments and multi-line comments require extra attention. For example, if you were to write the following PHP code: echo (string); echo (string); The first comment would be interpreted as a single-line comment and would result in the execution of the PHP script being stopped at the whitespace before the second statement. Because of this, you should avoid using single-line and multi-line comments in your PHP code unless you are sure you know what you are doing.

The only times when it is okay to use a single-line comment in your php programming are when you are writing code for a web application and have no need to hide anything from the end user. For instance, if you were writing an application which needed to detect whether a new file had been uploaded or not and then return true or false based on the current settings, then you would want to write your code as if it was written as PHP. However, the most common practice is to use a PHP comment in order to indicate that certain variables or functions are local to the current scope only. This allows you to pass on the variable or function definition to other functions or scopes which might need them without the danger of a single-line comment being noticed by other code generators. This is why in most cases you should use a PHP preprocessing library in your projects instead of PHP itself in order to get better quality output.

One of the most common mistakes made by PHP programmers is using comment codes in the wrong way. Most developers either leave comment codes alone or try and make their PHP code look as natural as possible. Unfortunately, both of these techniques are wrong and can cause a huge amount of SEO harm. Using comment codes in a wrong way can lead to search engine submissions that are not natural and can also cause the comment code to become invisible to search engines. So in most cases it is best to stick to the manual way of commenting out your code as it is the safest option.

There are two different ways of coding in PHP: manual and shell style single line comments. In order to comment out a PHP code, you need to use one of the following three different commenting methods. You may even use both but only one of them will produce better results. Here is a quick breakdown of the three options so that you can create API documentation that is as natural as possible.

Manual PHP comments. Manual PHP commenting is a safe and easy way to comment out code. This style is widely used because it produces the most natural looking results. Basically you just start writing code up front, put a comment above each and every opening brace and then write your body below this. This produces a very clean-looking output, which is just what you need when trying to create API documentation.

shell style comment tag. Using the shell style comment tag is not such a great choice. It can be hard to read and you are more likely to miss some keywords when using this method. This style produces very random results and just looks messy. If you want to look at the source code without having to read through an entire comment, then using the shell-style comment tag is probably not a good idea.

Multiple-line comment style. Using a multiple-line comment style makes the coding look cleaner and more professional. You should make sure that you get the braces on all of your lines in the correct places and that you indent the spaces in between each brace with a leading zero. This produces a clean looking output and will create API documentation in less time than if you just used the single line comment style.