PHP Comments

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PHP Single Line Comments

<h4>phpSingle_Line_Comments</h4>
<p>Single line comments start with //. Any text between // and the end of the line will be ignored (will not be executed).
You can also use # for single line comments, but in this tutorial we will use //.
The following examples uses a single-line comment as an explanation: </p>
<?php
    // Outputs a welcome message:
    echo "Welcome Home!";
    echo "<br>";

    echo "Welcome Home!"; // Outputs a welcome message
    echo "<br>";

    // echo "Welcome Home!";
    // echo "<br>";
?>

Example 1

Result View Example

PHP Multiline Comments

<h4>php-Multiline_Comments</h4>
<p>Multi-line comments start with /* and end with */.</p>
<p>Multi-line comment as an explanation:</p>
<?php
    /*
    The next statement will
    print a welcome message
    */
    echo "Welcome Home!";
?>
<hr>
<h4>Multi-line comment to ignore code:</h4>
<p>We can use multi-line comments to prevent blocks of code from being executed:</p>
<?php
    /*
    echo "Welcome to my home!";
    echo "Mi casa su casa!";
    */
    echo "Hello!";
?>
<hr>
<h4>Comments in the Middle of the Code</h4>
<p>The multi-line comment syntax can also be used to prevent execution of parts inside a code-line:</p>
<?php
    $x = 5 /* + 15 */ + 5;
    echo $x;
?>

Example 2

Result View Example

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