Re: PHP to access shell script to print barcodes

Well, that did something, and it does sound like it should work. I've scoured the web and haven't found anyone with code that does what I'm trying to do. I've got a working, hardcoded Postscript file here: http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps But I need to somehow serve it with PHP, so I can change some variables in it. By putting headers in place with PHP, and then doing an "echo" of the postscript, I get postscript errors (though Preview doesn't tell me what the error is): http://www.winecarepro.com/kiosk/fast/shell/serverps.ps Trying to trick the web-browser into thinking it's receiving Postscript from a PHP file is tricky. I don't know what to do next. Here's the code I was using in the above url: http://www.winecarepro.com/kiosk/fast/shell/serveps.php.zip It's not clear to me if the server is parsing the postscript first and then serving it, or if the server is server the postscript as-is and the browser sends it to Preview which interprets it. I basically want to replicate the functionality found here: http://blog.maniac.nl/webbased-pdf-lto-barcode-generator/ On Mar 23, 2010, at 5:37 PM, Peter Lind wrote: > You can create a .php script that sets a proper header to make the > browser download the file rather than display it. That also allows you > to set the filename for the download. What you'd need to do is include > something like: > > header("Content-Disposition: attachment; filename: 'barcodemerge.ps'"); > > That tells the browser to download the file. You can also try setting > the content-type > > header('Content-type: application/postscript'); > > Either of the above might do the trick for you. > > Regards > Peter > > On 23 March 2010 22:10, Rob Gould <gouldimg@me.com> wrote: >> I love the idea of using PHP to insert data into Postscript. I'm just not sure how to >> make it happen. >> >> The good news is that I've got barcodes drawing just the way I need them: >> >> http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps >> >> The bad news is that's all hard-coded Postscript. I'd like to take your >> suggestion and use PHP to loop-through and draw the barcodes - - - however, if I put anything that >> resembles PHP in my .ps file, bad things happen. >> >> Anyone know the secret to creating a postscript .ps file that had PHP code injecting data >> into it? >> >> Here's the source file that works. Where PHP would be handy is at the very bottom of >> the script.... >> >> >> http://www.winecarepro.com/kiosk/fast/shell/barcodemerge.ps.zip >> >> >> On Mar 23, 2010, at 7:48 AM, Richard Quadling wrote: >> >>> On 23 March 2010 05:48, Jochem Maas <jochem@iamjochem.com> wrote: >>>> Op 3/23/10 3:27 AM, Rob Gould schreef: >>>>> I am trying to replicate the functionality that I see on this site: >>>>> >>>>> >>>>> http://blog.maniac.nl/webbased-pdf-lto-barcode-generator/ >>>>> >>>>> Notice after you hit SUBMIT QUERY, you get a PDF file with a page of barcodes. >>>>> That's _exactly_ what I'm after. >>>>> Fortunately, the author gives step-by-step instructions on how to do this on >>>>> this page: >>>>> >>>>> >>>>> http://blog.maniac.nl/2008/05/28/creating-lto-barcodes/ >>>>> >>>>> >>>>> So I've gotten through all the steps, and have created the >>>>> "barcode_with_samples.ps" file, and have it hosted here: >>>>> >>>>> http://www.winecarepro.com/kiosk/fast/shell/ >>>>> >>>>> Notice how the last few lines contain the shell-script that renders the >>>>> postscript: >>>>> >>>>> #!/bin/bash >>>>> >>>>> BASE=”100″; >>>>> NR=$BASE >>>>> >>>>> for hor in 30 220 410 >>>>> do >>>>> ver=740 >>>>> while [ $ver -ge 40 ]; >>>>> do >>>>> printf -v FNR “(%06dL3)” $NR >>>>> echo “$hor $ver moveto $FNR (includetext height=0.55) code39 barcode” >>>>> let ver=$ver-70 >>>>> let NR=NR+1 >>>>> done >>>>> done >>>>> >>>>> >>>>> I need to somehow create a PHP script that "executes" this shell >>>>> script. And after doing some research, it sounds like >>>>> I need to use the PHP exec command, so I do that with the following file: >>>>> >>>>> >>>>> http://www.winecarepro.com/kiosk/fast/shell/printbarcodes.php >>>>> >>>>> Which has the following script: >>>>> >>>>> <?php >>>>> >>>>> >>>>> $command="http://www.winecarepro.com/kiosk/fast/shell/barcode_with_sample.ps"; >>>>> exec($command, $arr); >>>>> >>>>> echo $arr; >>>>> >>>>> ?> >>>>> >>>>> >>>>> And, as you can see, nothing works. I guess firstly, I'd like to know: >>>>> >>>>> A) Is this PHP exec call really the way to go with executing this shell >>>>> script? Is there a better way? It seems to me like it's not really executing. >>>> >>>> that's what exec() is for. $command need to contain a *local* path to the >>>> command in question, currently your >>>> trying to pass a url to bash ... which obviously doesn't do much. >>>> >>>> the shell script in question needs to have the executable bit set in order to run >>>> (either that or change to command to >>>> run bash with your script as an argument) >>>> >>>> I'd also suggest putting the shell script outside of your webroot, or at least >>>> in a directory that's not accessable >>>> from the web. >>>> >>>> -- >>>> PHP General Mailing List (http://www.php.net/) >>>> To unsubscribe, visit: http://www.php.net/unsub.php >>>> >>>> >>> >>> I think this is a translation of the script to PHP. >>> >>> <?php >>> $BASE = 100; >>> $NR = $BASE; >>> >>> foreach(array(30, 220, 410) as $hor) { >>> $ver = 740; >>> while ($ver >= 40) { >>> printf("$hor $ver moveto (%06dL3) (includetext height=0.55) code39 >>> barcode\n", $NR); >>> $ver -= 70; >>> ++$NR; >>> } >>> } >>> >>> >>> >>> It produces output like ... >>> >>> 30 740 moveto (000100L3) (includetext height=0.55) code39 barcode >>> 30 670 moveto (000101L3) (includetext height=0.55) code39 barcode >>> 30 600 moveto (000102L3) (includetext height=0.55) code39 barcode >>> 30 530 moveto (000103L3) (includetext height=0.55) code39 barcode >>> 30 460 moveto (000104L3) (includetext height=0.55) code39 barcode >>> 30 390 moveto (000105L3) (includetext height=0.55) code39 barcode >>> 30 320 moveto (000106L3) (includetext height=0.55) code39 barcode >>> 30 250 moveto (000107L3) (includetext height=0.55) code39 barcode >>> 30 180 moveto (000108L3) (includetext height=0.55) code39 barcode >>> 30 110 moveto (000109L3) (includetext height=0.55) code39 barcode >>> 30 40 moveto (000110L3) (includetext height=0.55) code39 barcode >>> 220 740 moveto (000111L3) (includetext height=0.55) code39 barcode >>> 220 670 moveto (000112L3) (includetext height=0.55) code39 barcode >>> 220 600 moveto (000113L3) (includetext height=0.55) code39 barcode >>> 220 530 moveto (000114L3) (includetext height=0.55) code39 barcode >>> 220 460 moveto (000115L3) (includetext height=0.55) code39 barcode >>> 220 390 moveto (000116L3) (includetext height=0.55) code39 barcode >>> 220 320 moveto (000117L3) (includetext height=0.55) code39 barcode >>> 220 250 moveto (000118L3) (includetext height=0.55) code39 barcode >>> 220 180 moveto (000119L3) (includetext height=0.55) code39 barcode >>> 220 110 moveto (000120L3) (includetext height=0.55) code39 barcode >>> 220 40 moveto (000121L3) (includetext height=0.55) code39 barcode >>> 410 740 moveto (000122L3) (includetext height=0.55) code39 barcode >>> 410 670 moveto (000123L3) (includetext height=0.55) code39 barcode >>> 410 600 moveto (000124L3) (includetext height=0.55) code39 barcode >>> 410 530 moveto (000125L3) (includetext height=0.55) code39 barcode >>> 410 460 moveto (000126L3) (includetext height=0.55) code39 barcode >>> 410 390 moveto (000127L3) (includetext height=0.55) code39 barcode >>> 410 320 moveto (000128L3) (includetext height=0.55) code39 barcode >>> 410 250 moveto (000129L3) (includetext height=0.55) code39 barcode >>> 410 180 moveto (000130L3) (includetext height=0.55) code39 barcode >>> 410 110 moveto (000131L3) (includetext height=0.55) code39 barcode >>> 410 40 moveto (000132L3) (includetext height=0.55) code39 barcode >>> >>> >>> No idea if that is accurate or not. If you can run the script by hand >>> once to confirm, then >>> -- >>> ----- >>> Richard Quadling >>> "Standing on the shoulders of some very clever giants!" >>> EE : http://www.experts-exchange.com/M_248814.html >>> EE4Free : >>> http://www.experts-exchange.com/becomeAnExpert.jsp >>> Zend Certified Engineer : >>> http://zend.com/zce.php?c=ZEND002498&r=213474731 >>> ZOPA : http://uk.zopa.com/member/RQuadling >> >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> > > > > -- > <hype> > WWW: http://plphp.dk / > http://plind.dk > LinkedIn: http://www.linkedin.com/in/plind > Flickr: http://www.flickr.com/photos/fake51 > BeWelcome: Fake51 > Couchsurfing: Fake51 > </hype>