In PHP, comments are used to leave notes or explanations in the code. They are ignored by the PHP interpreter, so they don't affect the execution of the script. Comments are a crucial aspect of good coding practice, helping both the original developer and any subsequent developers understand the intent and functionality of the code.
PHP supports both single-line and multi-line comments.
There are two ways to indicate a single-line comment in PHP:
Using // (double forward slashes):
// This is a single-line comment.
echo "Hello, World!"; // This is also a single-line comment.
Using # (hash symbol):
# This is another way to create a single-line comment.
echo "Hi there!"; # This works just like the double slashes.
For multi-line comments, you use /* to begin the comment and */ to end it:
/*
This is a multi-line comment.
It spans multiple lines until the closing tag.
You can write descriptions, notes, or any other information here.
*/
echo "This is outside the comment block.";
Remember, while commenting is good, over-commenting or stating the obvious can clutter the code. It's essential to strike a balance: aim to write clean, readable code and use comments to explain the non-obvious parts.
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