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<?php
if ( isset($_POST['username']) && isset($_POST['password']) ) {
	if ($_POST['username'] == 'YOURUSERNAME' && $_POST['password'] == 'YOURPASSWORD') {
		function readCSV($csvFile){
		$file_handle = fopen($csvFile, 'r');
		while (!feof($file_handle) ) {
			$line_of_text[] = fgetcsv($file_handle, 0);
		}
		fclose($file_handle);
		return $line_of_text;
	}
	if (isset($_POST['submit']) && isset($_FILES['csv']) && ($_FILES['csv']['name'] !== '' && strpos($_FILES['csv']['name'], '.csv') !== false)) {
		header('Content-Type: application/xhtml+xml');
		header('Content-Disposition: attachment; filename='.basename('import.xml'));
		header('Expires: 0');
		header('Cache-Control: must-revalidate');
		header('Pragma: public');
		header('Content-Length: ' . filesize(''));
		$csv = readCSV($_FILES['csv']['tmp_name']);
		$counter = 0;
		$volumePricingName = 'Per Product Volume Pricing';

		//Volume Pricing
		echo '<Module code="discount_volume" feature="discount">' . PHP_EOL;
			$oldCode = '';
			$lastCode = '';
		foreach ($csv as $c) {
			$counter++;
			if ($counter > 1 && $c[1]) {
				if($c['0']) {
					$code = $c['0'];
				}
				if ($oldCode !== '' && $oldCode !== $code ) {
					echo "\t".'</ProductPricingTable>' . PHP_EOL;
				}
				if($c['0']) {
					echo "\t".'<ProductPricingTable group_name="'.$volumePricingName.'" product_code="'.$code.'">' . PHP_EOL;
					echo "\t\t".'<Entry quantity="1" type="absolute" amount="'.$c[3].'" />' . PHP_EOL;
				} else {
					echo "\t\t".'<Entry quantity="'.$c[1].'" type="absolute" amount="'.$c[3].'" />' . PHP_EOL;
				}

				$oldCode = $code;
			}
		}
		echo "\t".'</ProductPricingTable>' . PHP_EOL;
		echo '</Module>';

		echo PHP_EOL . PHP_EOL;
		$counter = 0;
		// Price
		foreach ($csv as $c) {
			$counter++;
			if ($c['0'] && $counter > 1) {
				echo '<Product_Update code="'.$c[0].'">'. PHP_EOL;;
					echo "\t".'<Price>'.$c[3].'</Price>'. PHP_EOL;;
				echo '</Product_Update>'. PHP_EOL;;
			}
		}

		echo PHP_EOL . PHP_EOL;
		$counter = 0;
		// Customfields
		/*
		echo '<Module code="customfields" feature="fields_prod">' . PHP_EOL;
			foreach ($csv as $c) {
				$counter++;
				if ($c['0'] && $c['1'] !== '1' && $counter > 1) {
					echo "\t".'<ProductField_Value product="'.$c['0'].'" field="minimum">'.$c['1'].'</ProductField_Value>' . PHP_EOL;
				}
			}
		echo '</Module>' . PHP_EOL; */
		exit;
	} else {
		//form here.
		?>
		<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data">
			<div class="row">
				<input type="file" name="csv" class="custom-file-input" />
			</div>
			<div class="row">
				<input type="submit" name="submit" value="Create XML File"/>
			</div>
			<input type="hidden" name="username" value="<?php echo $_POST['username']; ?>" />
			<input type="hidden" name="password" value="<?php echo $_POST['password']; ?>" />
		</form>
		<br />
		<a href="example.csv">Click here for an example csv.</a>
		<?php 
	}
	} else { ?>
	<strong>Incorrect. Please try again.</strong>
	<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data">
			<div class="row">
				Username:<br /><input type="text" name="username" />
			</div>
			<div class="row">
				Password:<br /><input type="password" name="password"/>
			</div>
			<div class="row">
				<input type="submit" name="Enter" value="submit" />
			</div>
		</form>
<?PHP } 
} else {  ?>
	<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data">
		<div class="row">
			Username:<br /><input type="text" name="username" />
		</div>
		<div class="row">
			Password:<br /><input type="password" name="password"/>
		</div>
		<div class="row">
				<input type="submit" name="Enter" value="submit" />
		</div>
	</form>
<?php } ?>

- Adding example CSV for acme