Grab product orders from Sellwire in PHP

sellwirecsv.php

require 'PHP-Browser/browser.class.php';

function get_sellwire_csv( $username, $password, $project_id ) {
	$browser = new Browser( 'SellWire Browser' );

	$browser->navigate( 'http://app.sellwire.net/logout' );
	$browser->navigate( 'http://app.sellwire.net/login' );
	$form = $browser->getForm( '//form[@method]' );
	$form->setAction( 'http://app.sellwire.net/login' );
	$form->setAttributeByName( 'username', $username )->setAttributeByName( 'password', $password );
	$browser->submitForm( $form, 'login' );
	$browser->click( "//a[@href='http://app.sellwire.net/orders']" );

	$form = $browser->getForm( "//form[@action='http://app.sellwire.net/orders/export']" );
	$form->setAttributeByName( 'export_file', $project_id );
	$browser->submitForm( $form, 'Export' );
	$csv = $browser->getRawResponse();
	return $csv;
}

class SellWire_CSV_Sale {

	private $values = array();

	public function get( $key ){
		return $this->values[$key];
	}

	public function set( $key, $value ){
		$this->values[$key] = $value;
	}

	public function parse_raw_line( $line ) {

		$columns = array(
			'file_name',
			'order_id',
			'trans_id',
			'customer_name',
			'customer_email',
			'amount',
			'tax',
			'total',
			'currency',
			'in_eu',
			'tax_country',
			'tax_number',
			'ordered_on',
			'downloads',
			'views',
			'notes',
			'status'
		);
		$lines = explode( ',', $line );

		$iteration = 0;
		foreach ( $columns as $column ) {
			$this->set( $column, $lines[$iteration] );
			$iteration++;
		}
	}
}


function get_sellwire_sales( $username, $password, $project_id ){
	$csv = get_sellwire_csv( $username, $password, $project_id );
	$lines = explode( "\n", $csv );
	$sales = array();
	foreach ( $lines as $line ) {
		if ( empty( $line ) ) {
			continue;	
		}
		$sale = new SellWire_CSV_Sale();
		$sale->parse_raw_line( $line );
		if ( $sale->get( 'file_name' ) == '"file_name"' ) {
			continue;
		}
		$sales[] = $sale;
	}
	return $sales;
}