Comment in php program

What is comment?

Commented code can not be execute. Comments are useful for programmers. PHP supports 'C', 'C++' and Unix shell-style (Perl style) comments.

Program

<?php
    echo 'Hello friends'; 
// This is a one-line c++ style comment
    /* This is a multi line comment
       yet another line of comment */
    echo 'Good news';
    echo 'Hello world'; 
# This is a one-line shell-style comment
?>

See Output

Single line comment with //

// is used to comment one line of code. This is c++ style comment.

Program

<?php
    echo 'Hello friend'; 
// echo('This is a one-line c++ style comment');
?>

See Output

Single line comment with #

# used to comment one line of code. This is shell style comment.

Program

<?php
    echo 'Hello friend'; 
# echo('This is a one-line shell -style comment');
?>

See Output

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