Recursive call in a php app

Given the following code why isn't the addDir functional able to call itself.

08-Sep-2015 16:18:46 America/New_York] PHP Fatal error:  Call to undefined method ZipArchive::addDir() in C:\inetpub\wwwroot\try.php on line 11

function addDir($path, $zipit ,$parent_dir = '') {
        if($parent_dir != ''){
            $parent_dir .= '/';
        $nodes = glob($path . '/*');
        foreach ($nodes as $node) {
            if (is_dir($node)) {
              $result=  addDir($node, $zipit,$parent_dir.basename($node));
            else if (is_file($node))  {
                $zipit->addFile($node, $parent_dir.basename($node));
return true;
// define some basics
$rootPath = 'c:/php/';

$archiveName = "";
// initialize the ZIP archive

$zip = new ZipArchive;
$zip->open('c:/smtp/', ZIPARCHIVE::OVERWRITE );
// close the zip file
$result = addDir("c:/php",$zip);
if (!$zip->close()) {
	echo '<p>There was a problem writing the ZIP archive.</p>';
} else {
	echo '<p>Successfully created the ZIP Archive!</p>';

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Ray PaseurCommented:
Please check the line numbers - line 11 does not contain a function call.  thanks.
Ahmed MerghaniSoftware EngineerCommented:
I checked it and it worked!!

Is there any else code you did not display here??

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HalCHubAuthor Commented:
the lines are off because I removed the <?php
Ray PaseurCommented:
OK, please post the script just the way it is in real life - we need to be able to see the same script and same error messages you see.  thanks.
HalCHubAuthor Commented:
I forgot to install ziparchive :(
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