One can get free webhosting domain for their business and in order to market the domain name involves many efforts. The internet marketing online makes target market traffic to your website. Many business takes search engine optimization services to improve page ranking. The wireless internet cafe, where you get different services like broad band width, high transfer rate or speed, ip phones facility and so on, is not secure and people has access to many things. Similarly many web servers hosting PDFs are now open to Cross Site Scripting (XSS) because nothing is hidden. So people should always have windows backup software because anybody can enter the system and can hack and destroy the data.

While there are several Open Source libraries available to PHP developers, notably FPDF (http://www.fpdf.org/), and pdf-php (http://sourceforge.net/projects/pdf-php), PHP's built-in PDFlib functions are arguably the most efficient means of doing so.

The PDFlib functions, moved to the PHP Extension Community Library (PECL since PHP 4.3.9), are a wrapper for the commercial PDFLib (http://www.pdflib.com/) PDF processing library. The advantage offered by PDFLib over the purely PHP-based solutions is that of speed. Compiled C code, such as PDFLib, is magnitudes of order faster than PHP code interpreted by Apache. The disadvantage  is the licensing cost for commercial use.

The observant reader will note that this text refers to two distinct capitalizations of the subject      matter: "PDFLib" and "PDFlib." This is to differentiate the C library, named "PDFLib" by its     owners, from the PHP wrapper library "PDFlib." It is also noteworthy that the C library documentation does not rigidly adhere to this convention.  

Configuration

PHP's support for PDFLib has undergone significant changes recently, and like so many other features  of the language and its myriad libraries, it is expected to undergo further changes, especially in light of  the growing acceptance of PHP within the professional development community.

Thus, configuration is highly susceptible to the usual sticking points of architecture, operating system,  PHP version, and so on. If your Apache installation is using dynamic shared objects (DSO), or dynamic  link libraries (DLL) for Windows installations, then all that is required is ensuring that the appropriate  file exists (libpdf_php.so or libpdf_php.dll, respectively), and is referenced properly and uncommented in the php.ini file.

  If you're not using DSO, or can't, you will have to visit the PDFlib website (http://www.pdflib.com/),
  acquire the latest version of one of the many flavors of the PDFLib source, and build a statically linked
  library. For further details visit http://www.pdflib.com/products/pdflib/info/PDFlib-in-PHP-
  HowTo.pdf.

Regardless of how you install PDFLib, it is worthwhile to visit the PDFLib website and download the  latest version of PDFlib Lite. Included with the source is a very helpful document, PDFlib-manual.pdf.  The manual contains a variety of useful information, including bindings for all supported programming  languages, general PDFLib programming concepts, and much more. Section 3.1.1, "PDFlib Program  Structure and Function Scopes," is a must read that will save you hours of frustration trying to eliminate  "scope" errors.

Getting Started

  The PDF document will be known to PHP as a resource type, and you create it using the pdf_new()  function, as follows:

       $pdf = pdf_new();

       if (!pdf_open_file($pdf, "")) {

          die("Error: Unable to open output file.");

       }

Note that immediately after the resource is created, a test ensures that the resource was created and  opened. Attempting to proceed with any page scope functions without this check will cause the script  to fail, and will generate the following PDFlib exception:

       `Function must not be called in `object' scope'
 

In other words, a page scope function has been called in object scope, since the document will not have  been opened yet. In PHP5, it is sufficient to enclose the pdf_new() call within a try/catch block that catches a type PDFlibException exception.

Upon completion of the PDF document, you can call pdf_close() to close the document file and  release any associated resources.
 

Specifying Document Information

One means of searching documents is via the metadata contained with the document information. This is achieved easily using the pdf_set_info() function. Section 8.9.6, "Document Information Fields" of the PDFLib manual specifies which fields are relevant. For example:

    pdf_set_info($pdf, "Author", $name . " <" . $row["Email"] . ">");

    pdf_set_info($pdf, "Title", "Resume - " . $name);

    pdf_set_info($pdf, "Subject", "The resume of " . $name . ", " .

                     $row["DesiredPosition"] . ".");

This code sets the document's author, title, and subject to values pulled from a MySQL database.

Note that the pdf_set_info() function replaces a number of deprecated functions that set fields specifically.
 

Required Elements

To render the most basic page, every PDFlib generated document requires the following elements:

•           pdf_new(): Needed to create a new PDF resource.
  

•           pdf_open_file($pdf [, $filename]): Accepts a PDF resource and an optional filename as          parameters. The filename is unnecessary for buffered output, as in the example at the end of          this section.
•           pdf_begin_page($pdf, $width, $height): Accepts a PDF resource as well as the width and        height of the page in points.
•           pdf_findfont($pdf, $font, $encoding [, $embed]): Locates a font given a PDF resource, a specific font name, and encoding as parameters. Passing a non-zero value as the optional fourth parameter will cause the font to be immediately checked, averting subsequent errors.
•           pdf_setfont($pdf, $font, $size): Accepts a PDF resource, a font handle (as returned by         the pdf_findfont function above), and a font size.
•           pdf_show_xy($pdf, $text, $x, $y): Places the passed text within the given PDF resource at     the given x and y coordinates given in points.
•          pdf_stroke($pdf): "Inks" or draws the text on the passed PDF resource.
•          pdf_end_page($pdf): Finishes the current page of the given PDF resource.
•          pdf_close($pdf): Closes the passed PDF resource.
  

The resume generator example that winds up this section uses each of these functions to return a PDF document to the browser instead of placing the file somewhere within the local file structure.

Helper Functions

Given that certain sections of a typical document adhere to a specific style, you may find it useful to create several helper functions to simplify code maintenance and style changes. One particularly useful function would draw a horizontal line, not a trivial matter when generating a PDF, as follows:

         function drawHR($res) {

           $xpos = MARGIN;

           $ypos = pdf_get_value($res, "texty", 0) - VERT_SPACING;

          pdf_moveto($res, $xpos, $ypos);

          pdf_lineto($res, PAGE_WIDTH - MARGIN, $ypos);

           pdf_closepath($res);

          pdf_fill($res);

           $ypos = pdf_get_value($res, "texty", 0) - (VERT_SPACING * 2);

      }

  The drawHR() function accepts a PDF resource, $res, as an argument. It sets the initial x and y positions  of the line, using constant values and the pdf_get_value() function with the texty parameter. The third parameter of the pdf_get_value() function is a numeric "modifier" applied to the value specified by the second parameter. In most trivial cases, the value of this parameter will be 0. Thus, the last  line of the drawHR function might more elegantly be written as follows:

      $ypos = pdf_get_value($res, "texty", (VERT_SPACING * -2));

  A useful concept to grasp in PDF document creation is that of the "path." The pdf_moveto() function  positions the starting point within the document and pdf_lineto() draws a line along the path between  the two positions. The pdf_closepath() and pdf_fill() functions close then fills the path. Finally, the  y position is incremented by twice the vertical spacing constant.

  Another useful function might apply similar, yet distinct styles in accordance with a passed parameter:

      function pdflib_show($res, $text, $type) {

           $font = pdf_findfont($res, "Times-Roman", "winansi", 0);

           $xpos = MARGIN;

           $ypos = pdf_get_value($res, "texty", 0) - VERT_SPACING;

           switch ($type) {

           case CASE_CATEGORY:

               $font = pdf_findfont($res, "Times-Bold", "winansi", 0);

               $ypos = pdf_get_value($res, "texty", 0) - (VERT_SPACING * 3);

               break;

           case CASE_LIST:

               $xpos = MARGIN + TAB;

               $text = "* " . $text;

               break;

           case CASE_OBJECTIVE:

               $font = pdf_findfont($res, "Times-Italic", "winansi", 0);

               $xpos = MARGIN + TAB;

               $text = "\"" . $text . "\"";

               break;

           }

          pdf_setfont($res, $font, 12.0);

          pdf_show_xy($res, $text, $xpos, $ypos);

           return;

      }

As you will see in the example that wraps up this section, this code uses a switch control structure to  set specific type faces and text positioning according to the value of the $type parameter.

Font selection is performed by the pdf_findfont() function and set via the pdf_setfont() function.

PHP's PDFlib implementation typically installs a few fonts by default in the "pdf-related" directory in the directory within which PHP is installed. PDFLib supports a wide variety of fonts and faces. See the  PDFLib documentation for complete details.

Finally, the pdf_show_xy() function displays a given string in a specified location.

 

About Fonts and Positioning

  In the previous code example, you saw how various text properties are manipulated via PHP's built-in  PDFlib functions. Again, developers are cautioned against using other deprecated functions, such as  pdf_get_font() and pdf_get_fontsize() which have been replaced by the single pdf_get_value()  function. This function is used just as the aforementioned pdf_set_info() function. PHP's documentation (http://www.php.net/manual/en/ref.pdf.php#AEN124842) lists the deprecated functions and  their replacements.

      The PDFLib coordinate system defines the x:y coordinate 0:0 to be the lower-left corner of the document.

  You will likely find it helpful to define constants for such page properties as the margin and tab widths,  vertical spacing, and page dimensions. The following table lists the dimensions of the more common  page sizes in points, such that 1 pt. = 1/72 inch = 0.3528 mm.

    Format           Width             Height

       A4               595               842

       B5               501               709

      Letter           612               792

     Legal            612               1008

 

Finishing Up

  If you simply want to create a document and place it somewhere on the localhost, all you need to do to  complete the PDF file is to end the page and close the document. More commonly, though, a buffer is returned to a Web browser. The pdf_get_buffer() function retrieves the passed PDF document. The  browser is then alerted via the header() function to expect a PDF document and a simple call to print  completes the process, as you can see here:

     pdf_end_page($pdf);

      pdf_close($pdf);

      $buf = pdf_get_buffer($pdf);

      $len = strlen($buf);

      header("Content-type: application/pdf");

     header("Content-Length: $len");

     header("Content-Disposition: inline; filename=resume.pdf");

      print $buf;

  This section only briefly touched upon the myriad of PDF generation features available to the advanced  PHP developer. Other available facets that we have not touched upon include bookmarking, hypertext,  color use, graphics generation and importing, and too many more to mention here.