PHP Comments

In PHP, comments are lines of code that are not executed by the interpreter. They are used to add explanatory notes, documentation, or disable specific code blocks temporarily without removing them from the source code. Comments play a crucial role in improving code readability and making it easier for other developers (including yourself in the future) to understand the purpose of different parts of the code. PHP supports two types of comments:

1. Single-line comments:
   Single-line comments start with two forward slashes // and continue until the end of the line. Anything written after // on the same line is considered a comment and is not executed. Example:

   // This is a single-line comment in PHP
   $variable = 42; // Another comment on the same line

2. Multi-line comments:
   Multi-line comments, also known as block comments, are enclosed between /* and */. Everything between these markers is considered a comment and is ignored by the PHP interpreter. Example:

   /*
   This is a multi-line comment
   It can span across multiple lines
   and is useful for documenting code or disabling large blocks of code temporarily.
   */

   /*
   $variable = 42;
   echo "This code is inside a multi-line comment and won't be executed.";
   */

Comments should be used liberally in your PHP code to provide insights into the logic, purpose, or potential gotchas within the code. This practice will not only help you remember the code’s intention but will also make it easier for others to collaborate and maintain the codebase effectively.