In PHP, comments are used to add explanatory notes or annotations within your code. Comments are not executed by the PHP interpreter; they are purely for documentation purposes, and they help you and others understand the code better. PHP supports two main types of comments:
Single-line comments: These are comments that span only one line. They are typically used for brief explanations or annotations within the code. Single-line comments in PHP can be created using either double slashes (//) or a hash symbol (#).
Multi-line comments: These are comments that can span multiple lines, allowing for more extensive explanations or commenting out large sections of code. Multi-line comments in PHP are enclosed within /* and */.
It’s important to note that comments do not affect the execution of the PHP code; they are ignored by the PHP interpreter: in fact, they are removed before execution. Comments are primarily for developers and maintainers of the code to understand its purpose, logic, or any special considerations. Well-documented code with meaningful comments can make it easier for you and others to read, understand, and maintain PHP applications.
Comments may be formalized with a specific syntax, and create automated instruction for other application. For example, phpdoc comments are providing extra information with a specific syntax.
<?php// This is a single-line comment$variable=42;// Assign a value to $variable# Another single-line comment/* This is a multi-line comment. It can span multiple lines and is often used for longer explanations or for commenting out sections of code. */$variable=43;?>
Comments¶
In PHP, comments are used to add explanatory notes or annotations within your code. Comments are not executed by the PHP interpreter; they are purely for documentation purposes, and they help you and others understand the code better. PHP supports two main types of comments:
Single-line comments: These are comments that span only one line. They are typically used for brief explanations or annotations within the code. Single-line comments in PHP can be created using either double slashes (
//) or a hash symbol (#).Multi-line comments: These are comments that can span multiple lines, allowing for more extensive explanations or commenting out large sections of code. Multi-line comments in PHP are enclosed within
/*and*/.It’s important to note that comments do not affect the execution of the PHP code; they are ignored by the PHP interpreter: in fact, they are removed before execution. Comments are primarily for developers and maintainers of the code to understand its purpose, logic, or any special considerations. Well-documented code with meaningful comments can make it easier for you and others to read, understand, and maintain PHP applications.
Comments may be formalized with a specific syntax, and create automated instruction for other application. For example, phpdoc comments are providing extra information with a specific syntax.
Related : PHPdoc