PHP to dynamically generate PDF files in Web pages detailed tutorial ____php

We will use the score of the women's dry sliding race to demonstrate the process of dynamically building PDF files. These scores are obtained from the Web and converted to XML. Listing 1 shows a sample XML data file.

Listing 1. XML data ?

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< events > < event name = "Beast of the East" > < Game score1 = "team1 =" Toronto gore-gore R Ollergirls "team2 =" Montreal La racaille "score2 =" one "> < game Score1 =" "team1 =" Toronto "Death Track Doll S "team2 =" Montreal Les contrabanditas "score2 =" > "</game ></game ></event > ; Event name = "Dustbowl Invitational" > ... </event > < event name = "The Great Yorkshire Showdow n > ... </event > </events >

The root element of XML is a events marker. The data is grouped by event, and each event contains more than one match. Within the events tag, is a series of event tokens in which there are multiple game tags. These game tags contain the names of the two teams participating in the game and their scores in the game.

Listing 2 shows the PHP code to read the XML.

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function getresu LTS () {  $xml = new DOMDocument ()   $xml->load (' Events.xml ');   $events = Array ();   foreach ($xml->getelementsbytagname (' event ') as $event) {   $games = array ();    foreach ($event->getelementsbytagname (' game ') as $game) {&NBSP;&NB sp;  $games []= Array (' team1 ' => $game->getattribute (' team1 '),      ' Score1 ' => $ga Me->getattribute (' score1 '),      ' team2 ' => $game->getattribute (' team2 '),       ' Score2 ' => $game->getattribute (' Score2 ');   }    $events []= Array (' name ' => $event->getattribute (' name '),     ' games ' => $games);  }   return $events; }?>

This script implements a GetResults function to read the XML file into the DOM document. Then use DOM calls to traverse all event and game tags to build an event array. Each element in the series is a hash table that contains the event name and the array of the race item. Structure is essentially a memory version of the XML structure.

To test the role of this script, an HTML export page is built, the GetResults function is used to read the file, and the data is output in a series of HTML tables. Listing 3 shows the PHP code used for the test.

Listing 3. Results HTML page ?

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?? php include_once (' G ") Etresults.php '); $ results = GetResults (); foreach ($results as $event) {?> < H1 ><? php echo ($event [' name '])? >

The Getresults.php,xml data file is uploaded to the WEB server via code, and you can view the HTML results, which is similar to Figure 1.
Figure 1. Contest results in HTML format

In this result, the winning team was used in bold to see which teams won the game.

Build PDF

After you get the data, focus on building the PDF file. The first step is to download the FPDF library and install it in the same directory as the existing application file set. In fact, as long as it's in the PHP library path, you can install it anywhere you like. Track where you place the font directory because you need to set ' Fpdf_fontpath ', as shown in Listing 4.

Listing 4. PDF Hello world?

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<?php define (' Fpdf_fontpath ', '/library/webserver/documents/derby/font/');   Require (' fpdf.php '); $pdf = new FPDF (); $pdf->setfont (' Arial ', ', ', 72); $pdf->addpage (); $pdf->cell (40,10, "Hello world!", 15); $pdf->output ();?>

This script is actually a "Hello world", but it is in PDF format instead of HTML. The first action that this script performs is to use the Define statement to set the location of the FPDF font directory. Then use the Require statement to introduce the FPDF library. This script creates a FPDF object from the library, sets the font, adds a page, and then uses the Cell method to place some text on the page and output the PDF.

Figure 2 shows the results of all normal situations.

Figure 2. Hello World in PDF format

If you do not see a PDF, you may want to run the script at the command line to see if the fpdf.php file is missing or if there are other problems.

Now that the PDF is present, you should merge it with the dry-slip results file and see what can be generated dynamically. Listing 5 shows the first version of the merge operation.

Listing 5. Display the results of the first version of the PDF ?

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