PHP Comments
PHP Comments
In PHP, comments are used to add notes and explanations to your code that are ignored by the interpreter and not executed. Comments are a helpful tool for documenting your code and making it easier to read and understand.
There are two types of comments in PHP:
- Single-line comments: Single-line comments begin with two forward slashes (//) and continue until the end of the line. For example:
// This is a single-line comment
echo "Hello World";
In this example, the single-line comment explains what the following code does.
- Multi-line comments: Multi-line comments begin with a forward slash followed by an asterisk (/) and end with an asterisk followed by a forward slash (/). Everything between the opening and closing symbols is considered a comment. For example:
/*
This is a multi-line comment
that spans multiple lines
*/
echo "Hello World";
In this example, the multi-line comment explains the code that follows and provides more detail than a single-line comment.
It is important to note that comments should be used sparingly and only when necessary. Too many comments can make code harder to read, so it is best to use comments only to explain complex or confusing parts of your code.
Also, comments can be used to temporarily disable a part of your code for testing purposes. You can simply add two forward slashes before a line of code to turn it into a comment and prevent it from being executed, like this:
// echo "Hello World";
In this example, the echo “Hello World”; line is commented out and will not be executed.