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PHP Comments

A comment in PHP code is a line that is not executed as a part of the program. Its only purpose is to be read by someone who is looking at the code

Comments in PHP

A comment in PHP code is a line that is not executed as a part of the program. Its only purpose is to be read by someone who is looking at the code.

Comments can be used to:

  • Let others understand your code
  • Remind yourself of what you did - Most programmers have experienced coming back to their own work a year or two later and having to re-figure out what they did. Comments can remind you of what you were thinking when you wrote the code

    • PHP supports several ways of commenting:

    Example

    Syntax for single-line comments:

    <!DOCTYPE html>
    <html>
    <body>

    <?php
    // This is a single-line comment

    # This is also a single-line comment
    ?>

    </body>
    </html>

    Example

    Syntax for multiple-line comments:

    <!DOCTYPE html>
    <html>
    <body>

    <?php
    /*
    This is a multiple-lines comment block
    that spans over multiple
    lines
    */
    ?>

    </body>
    </html>

    Example

    Using comments to leave out parts of the code:

    <!DOCTYPE html>
    <html>
    <body>

    <?php
    // You can also use comments to leave out parts of a code line
    $x = 5 /* + 15 */ + 5;
    echo $x;
    ?>

    </body>
    </html>

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