Timeclock: using FPDF to generate timesheets

April 9th, 2009

Background

Read background information on the design of the timeclock system!

Single vs. Multiple timesheets

Since each student’s timesheet is formated the same way, whether it is generated as a single timesheet or as part of multiple timesheets, I developed a class to create the timesheets.

Figure 1: A sample timesheet

In the class is a function called outputPDF which accepts one argument: an array of the timesheet values. Inside the function we begin creating the page.

function outputFPdf($app_data)
{
	$app_data;
	ob_start();
	$output = null;
	$output .= $this->fpdf->SetFont('Arial','B',15);
	$output .= $this->fpdf->Cell(80);
	$output .= $this->fpdf->Cell(30,10,'Complete Payroll Report',0,0,'C');
	$output .= $this->fpdf->Ln(8);
			$output .= $this->fpdf->SetFont('Arial','',10);
	$output .= $this->fpdf->Cell('',10,"Name: ".$app_data['name'],0,0,'C');
	$output .= $this->fpdf->Ln(6);
        <---- edited for brevity ---->
	ob_clean();
	return $output;
}

Now that we’ve got the timesheet ready let’s create a function that determines the timesheet type.

function createPdf($app_data, $type, $begin, $end, $section=null)
	{

There are a few things we want to accomplish with this function.

include and instantiate the fpdf library

include 'includes/fpdf.php';
$this->fpdf = new fpdfHelper();

Call the FPDF page numbering function and create the first page:
```
$this->fpdf->AliasNbPages();
$this->fpdf->AddPage();
```

Set the page title:

$this->fpdf->setTitle('Complete Payroll Report');

check to see if the type is single and if so, generate the timesheet:

if($type == 'single')
{
	//set the begin period and end period dates
	$app_data['begin_period'] = $begin;
	$app_data['end_period'] = $end;
	//create the timesheet
	$data = $this->outputPdf($app_data);
	//get the current date so we can put it in the file name of the timesheet
	$date = date("m_d_Y");
	//create the file name with the employee's name and the date
	$name = $app_data['name']."_".$date.".pdf";
	//send it to the browser
	echo $this->fpdf->fpdfOutput($name, $destination = 'd');
}

if the type isn’t single check to see if it is multiple and if so, generate the timesheets:

elseif($type == 'multiple')
{
	//get the current date to use in the file name
	$date = date("m_d_Y");
	//do stuff to get all apps in pdf
	$data = null; //create variable to hold the timesheets as we generate them
	//loop through the data and create a timesheet for each employee
	foreach ($app_data as $app)
	{
		//set up begin and end date variables for the pay period
		$app['begin_period'] = $begin;
		$app['end_period'] = $end;
		//generate timesheet for the current employee and store it in the data variable
		$data .= $this->outputPdf($app);
		//create a new page
		$data .= $this->fpdf->AddPage();
	}
	//create the file name and include the name of the department (section) in it
	$name = "payroll_report_".$section."_".$date.".pdf";
	//send it to the browser
	echo $this->fpdf->fpdfOutput($name, $destination = 'd');
}
}

So all together it looks like this:

function createPdf($app_data, $type, $begin, $end, $section=null)
{
	include 'includes/fpdf.php';
	$this->fpdf = new fpdfHelper();

	$this->fpdf->AliasNbPages();
	$this->fpdf->AddPage();

	$this->fpdf->setTitle('Complete Payroll Report');

	if($type == 'single')
	{
		//set the begin period and end period dates
		$app_data['begin_period'] = $begin;
		$app_data['end_period'] = $end;
		//create the timesheet
		$data = $this->outputPdf($app_data);
		//get the current date so we can put it in the file name of the timesheet
		$date = date("m_d_Y");
		//create the file name with the employee's name and the date
		$name = $app_data['name']."_".$date.".pdf";
		//send it to the browser
		echo $this->fpdf->fpdfOutput($name, $destination = 'd');
	}
	elseif($type == 'multiple')
	{
		//get the current date to use in the file name
		$date = date("m_d_Y");
		//do stuff to get all apps in pdf
		$data = null; //create variable to hold the timesheets as we generate them
		//loop through the data and create a timesheet for each employee
		foreach ($app_data as $app)
		{
			//set up begin and end date variables for the pay period
			$app['begin_period'] = $begin;
			$app['end_period'] = $end;
			//generate timesheet for the current employee and store it in the data variable
			$data .= $this->outputPdf($app);
			//create a new page
			$data .= $this->fpdf->AddPage();
		}
		//create the file name and include the name of the department (section) in it
		$name = "payroll_report_".$section."_".$date.".pdf";
		//send it to the browser
		echo $this->fpdf->fpdfOutput($name, $destination = 'd');
	}
}

Code