douboshan1466 2016-10-04 22:48
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PHP中的$ _GET没有得到utm值

I am trying to print / echo utm_source, utm_medium and utm_campaign query values using this PHP code;

echo $_GET['utm_source'];

But strangely for some unknown reason on my server its not printing the values, when I replace utm_source to something else like test_source I am able to see the value in print.

Never faced any such issue, can anyone guide me here. 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<body>
<?php echo $_GET['utm_source']; ?>

</body>
</html>
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  • dongping6974 2016-10-04 23:32
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    Your original question quoted this code

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<body>
<?php $_GET['utm_source']; ?>

</body>
</html>

    If you add an echo to this statement it will work

    <?php echo $_GET['utm_source']; ?>

    when tested using

    test.com/test.php?utm_source=1

    A safer piece of PHP code would be

    <?php 
    if ( isset($_GET['utm_source']) ) {
        echo $_GET['utm_source']; 
    } else {
        echo 'the parameter utm_source is missing';
    }
?>
    评论

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