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Asked: 2026-05-26T00:53:36+00:00

I’m trying to get some PHP example code to work on PHP version 5.3.4,

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I’m trying to get some PHP example code to work on PHP version 5.3.4, Apache 2.2.17 on Windows.

The example says I need PHP 4.0 and above with CURL and contains:

<? 
$function = $_GET['function-if-exist'];
$test = "Test";
?>

<? =$test ?>

I don’t understand why I’m getting the following errors:

  1. My PHP doesn’t understand <? and wants <?PHP instead.
  2. My PHP doesn’t like <? =$test ?> and wants something like
    <?PHP echo $test ?>
  3. $function = $_GET[‘function-if-exist’]; causes the error “Undefined index” but presumably works for the folks that developed it.

Can anyone help me understand why their code is not working for me?

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1 Answer

  1. Editorial Team

    1) <? is the “short tag”. Most servers are configured to not allow short tags. This can be changed in php.ini.

    2) Again, short tags. Also I think you can’t have a space before the =, but the main problem is the short tags setting.

    3) $_GET accesses the query string, so when loading your script you need myscript.php?function-if-exist=something

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