Basic Usage Examples

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Most of the functions are fairly easy to use. The most difficult part is probably creating your first PDF document. The following example should help to get you started. It is developed for PHP 4 and creates the file hello.pdf with one page. It defines some document info field contents, loads the Helvetica-Bold font and outputs the text "Hello world! (says PHP)".

Example #1 Hello World example from PDFlib distribution for PHP 4

  <?php
$p  =  PDF_new ();

 
 if ( PDF_begin_document ( $p ,  "" ,  "" ) ==  0 ) {
    die( "Error: "  .  PDF_get_errmsg ( $p ));
}

 PDF_set_info ( $p ,  "Creator" ,  "hello.php" );
 PDF_set_info ( $p ,  "Author" ,  "Rainer Schaaf" );
 PDF_set_info ( $p ,  "Title" ,  "Hello world (PHP)!" );

 PDF_begin_page_ext ( $p ,  595 ,  842 ,  "" );

 $font  =  PDF_load_font ( $p ,  "Helvetica-Bold" ,  "winansi" ,  "" );

 PDF_setfont ( $p ,  $font ,  24.0 );
 PDF_set_text_pos ( $p ,  50 ,  700 );
 PDF_show ( $p ,  "Hello world!" );
 PDF_continue_text ( $p ,  "(says PHP)" );
 PDF_end_page_ext ( $p ,  "" );

 PDF_end_document ( $p ,  "" );

 $buf  =  PDF_get_buffer ( $p );
 $len  =  strlen ( $buf );

 header ( "Content-type: application/pdf" );
 header ( "Content-Length:  $len " );
 header ( "Content-Disposition: inline; filename=hello.pdf" );
print  $buf ;

 PDF_delete ( $p );
 ?>

The following example comes with the PDFlib distribution for PHP 5. It uses the new exception handling and object encapsulation features available in PHP 5. It creates the file hello.pdf with one page. It defines some document info field contents, loads the Helvetica-Bold font and outputs the text "Hello world! (says PHP)".

Example #2 Hello World example from PDFlib distribution for PHP 5

  <?php

 try {
     $p  = new  PDFlib ();

     
     if ( $p -> begin_document ( "" ,  "" ) ==  0 ) {
        die( "Error: "  .  $p -> get_errmsg ());
    }

     $p -> set_info ( "Creator" ,  "hello.php" );
     $p -> set_info ( "Author" ,  "Rainer Schaaf" );
     $p -> set_info ( "Title" ,  "Hello world (PHP)!" );

     $p -> begin_page_ext ( 595 ,  842 ,  "" );

     $font  =  $p -> load_font ( "Helvetica-Bold" ,  "winansi" ,  "" );

     $p -> setfont ( $font ,  24.0 );
     $p -> set_text_pos ( 50 ,  700 );
     $p -> show ( "Hello world!" );
     $p -> continue_text ( "(says PHP)" );
     $p -> end_page_ext ( "" );

     $p -> end_document ( "" );

     $buf  =  $p -> get_buffer ();
     $len  =  strlen ( $buf );

     header ( "Content-type: application/pdf" );
     header ( "Content-Length:  $len " );
     header ( "Content-Disposition: inline; filename=hello.pdf" );
    print  $buf ;
}
catch ( PDFlibException $e ) {
    die( "PDFlib exception occurred in hello sample:\n"  .
     "["  .  $e -> get_errnum () .  "] "  .  $e -> get_apiname () .  ": "  .
     $e -> get_errmsg () .  "\n" );
}
catch ( Exception $e ) {
    die( $e );
}
 $p  =  0 ;
 ?>

用户评论:

[#1] matt at kynx dot org [2012-03-23 16:42:37]

Be careful with your Content-Length if you're using multi-byte function overloading (http://www.php.net/manual/en/mbstring.overload.php). You will want to do:

<?php $len = mb_strlen($buf, 'ASCII'); ?>

Otherwise your PDF will be truncated and unreadable. Just cost me a sunny afternoon :-/