Is there an obvious syntax error in this short php code?

Hi,

I am using a CMS (moodle) which apparently has a built in function is_enrolled()  to verify that the user is enrolled in the course. The function definition and example is here : Function definition

I am trying to use it but it keeps returning 'not enrolled' when the user is actually enrolled. Since I am not really good at php, i am trying to figure out whether i may have not written this right. The link that the user clicks returns the GET, domain.com/x.php?tomato=2&potato=2


x.php

$courseid = $_GET["tomato"];
$userid = $_GET["potato"];
function isuserenrolled($courseid, $userid) {
	$context = context_course::instance($courseid); 
	return is_enrolled($context, $userid, '', true);
}
if (isuserenrolled($courseid, $userid)) {
	echo 'is enrolled';
}
else {
	echo 'not enrolled';
}

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the $context is a function that is copied straight from here

Help.
NeverEndingFlashStoriesAsked:
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Ray PaseurCommented:
There is no syntax error in the code snippet posted above, in the sense that PHP will parse the script and try to execute it.  Whether it is usable in the context of the Moodle project is a separate question.  Moodle undoubtedly has some pockets of expertise but it is kind of arcane when compared to the mainstream systems like WordPress, Drupal or Laravel.  You might want to look for a local Moodle user group and get involved to share ideas with other developers.
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