CII. Printer Functions

Wstęp

These functions are only available under Windows 9.x, ME, NT4 and 2000. They have been added in PHP 4.0.4.

Instalacja

This PECL extension is not bundled with PHP.

Windows users must enable php_printer.dll inside of php.ini in order to use these functions. To rozszerzenie PECL można pobrać osobno z wielu stron z migawkami PECL (nalezy wybrać repozytorium odpowiednie dla posiadanej wersji PHP): PECL dla PHP 4.3.x, PECL dla PHP 5.0.x lub PECL Unstable.

Konfiguracja czasu wykonywania

Na działanie tych funcji wpływają ustawienia zawarte w pliku php.ini.

Tabela 1. Printer configuration options

Name	Default	Changeable	Changelog
printer.default_printer	""	PHP_INI_ALL

Szczegóły i definicje dotyczące stałych PHP_INI_* znajdują się w rozdziale Dodatek H.

Spis treści
printer_abort -- Deletes the printer's spool file
printer_close -- Close an open printer connection
printer_create_brush -- Create a new brush
printer_create_dc -- Create a new device context
printer_create_font -- Create a new font
printer_create_pen -- Create a new pen
printer_delete_brush -- Delete a brush
printer_delete_dc -- Delete a device context
printer_delete_font -- Delete a font
printer_delete_pen -- Delete a pen
printer_draw_bmp -- Draw a bmp
printer_draw_chord -- Draw a chord
printer_draw_elipse -- Draw an ellipse
printer_draw_line -- Draw a line
printer_draw_pie -- Draw a pie
printer_draw_rectangle -- Draw a rectangle
printer_draw_roundrect -- Draw a rectangle with rounded corners
printer_draw_text -- Draw text
printer_end_doc -- Close document
printer_end_page -- Close active page
printer_get_option -- Retrieve printer configuration data
printer_list -- Return an array of printers attached to the server
printer_logical_fontheight -- Get logical font height
printer_open -- Open connection to a printer
printer_select_brush -- Select a brush
printer_select_font -- Select a font
printer_select_pen -- Select a pen
printer_set_option -- Configure the printer connection
printer_start_doc -- Start a new document
printer_start_page -- Start a new page
printer_write -- Write data to the printer

User Contributed Notes


Printing in UN*X is possible too:



<?php

function lpr($STR,$PRN) {

  $prn=(isset($PRN) && strlen($PRN))?"$PRN":C_DEFAULTPRN ;

  $CMDLINE="lpr -P $prn ";

  $pipe=popen("$CMDLINE" , 'w' );

  if (!$pipe) {print "pipe failed."; return ""; }

  fputs($pipe,$STR);

  pclose($pipe);

} // lpr()

?>



You pipe the stream/string/char/sign whatever to the system. In the example shown above you have to add at least the string for printing in the function call. The second arg is a printer name which if you don't set will be set to the C_DEFAULTPRN. This is a constant definition from an ini file.



Hope this will help to save a lot of time ;-)


You can print in XP. AND, you can print to a shared printer with XP. The drivers for the printer MUST be installed on ther server as well as on the computer you wish to print with. Also, the printer must be shared on the client computer.



I am using a Zebra LP2844 Thermal Barcode Printer in my application. I am running XP Pro,Apache 1.3.27, PHP 4.3+.



Here is a function I use in our churches checkin system.  I use this to print directly to our printer with out having to use any Javascript.



First, i give the function the name of the shared printer. 



Second, I get the client computers host name. You could use just REMOTE_ADDR too I suppose.



Then I return a correctly formatted Windows path to the shared printer for the 



function getPrinter($SharedPrinterName) {

    global $REMOTE_ADDR;

    $host  =  getHostByAddr($REMOTE_ADDR);

    return "\\\\".$host."\\".$SharedPrinterName;

}



$handle  =  printer_open(getPrinter("Eltron"));



So, as long as you KNOW the computers are suppose to have a shared printer called "Eltron", you're all set to start sending info to the printer with the other Printer functions.



-j


If you want to address the printer from your PHP-application in a Un*x environment:

This is possible if you use a different method.

In Unix it would not be logical to address your printer directly from php, but you could for instance generate a PDF-file with PDFlib (or a textfile, or a PNG/JPEG image with GD or what have you) and write it from your php-script to a directory that you use as a "printer-outbox."



Next, you write a shellscript that calls some unix tool to print all pdf or other documents in your "outbox" directory and then deletes all files in that directory.



Then you use crontab to run this script every minute or as often as you think it's neccessary.



You could of course also call the shellscript from your php-application with exec() but you'll probably want to avoid using exec() and the like for security reasons.