prerequisit.php
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	<?php
	$PreRequisitErrors = Array();
	$path = $pathtoroot.'in-commerce';

	$result = true;

	if (!is_writable(FULL_PATH.'/kernel/downloads')) {
	$result = false;
	$PreRequisitErrors[] = 'In-commerce\'s Downloads directory must be writable ('.$pathtoroot.'kernel'.$pathchar.'downloads)';
	}

	if (!function_exists('ConvertVersion')) {
	function ConvertVersion($version)
	{
	$parts = explode('.', $version);

	$bin = '';
	foreach ($parts as $part) {
	$bin .= str_pad(decbin($part), 8, '0', STR_PAD_LEFT);
	}

	$dec = bindec($bin);

	return $dec;
	}
	}

	$min_versions = Array(
	'In-Portal' => '1.1.0',
	'In-Link' => '3.1.0',
	'In-News' => '1.1.0',
	'In-Bulletin' => '1.1.0'
	);

	$conn =& GetADODBConnection();
	$query = 'SELECT * FROM '.GetTablePrefix().'Modules';
	$rs = $conn->Execute($query);
	while($rs && !$rs->EOF)
	{
	if (isset($min_versions[$rs->fields['Name']])) {
	if ( ConvertVersion($rs->fields['Version']) < ConvertVersion($min_versions[$rs->fields['Name']]) ) {
	$PreRequisitErrors[] = 'Please upgrade '.$rs->fields['Name'].' to version '.$min_versions[$rs->fields['Name']].' or above';
	$result = false;
	}
	}
	$rs->MoveNext();
	}

	if (isset($show_errors) && $show_errors)
	{
	foreach($PreRequisitErrors as $error)
	{
	echo '<b><font color="#FF0000">'.$error.'</font></b><br />';
	}
	}
	?>