Question

Redirection

Asked by: maratmu

Hi,

I am executing the below UNIX command through PHP:

passthru("\/opt\/ansys-v7.0\/v70\/ansys\/bin\/ansys70 -p ansysrf <'$filename'> output.out &", $y);

The command submits an input file to a software and the software writes the output to the output file.
It requires some time for the output file to be created.

IN That time i wish to show on the page messages like " Wait the job is in Process " and then show the contents of the outputfile when it is created.

Can i do it with redirection using header? Or how can i do it.

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Asked On
2003-10-09 at 21:10:16ID20762621
Topic

PHP Scripting Language

Participating Experts
4
Points
50
Comments
9

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Answers

 

by: LornaJanePosted on 2003-10-10 at 02:07:23ID: 9526300

I think the way to do this would be to call the function as you have done, but exclude the & from the end of it - this & makes the command runs in the background so it won't notify you when it returns.  Print a "please wait" message, then call the function, then do a header redirect.  The redirect won't happen until that function has returned and in the meantime the use will see your wait message.

Try it, and let me know how you get on!

 

by: jayrodPosted on 2003-10-11 at 10:49:25ID: 9533356

good solution lorna..

 

by: MarcosBLPosted on 2003-10-11 at 13:54:01ID: 9533901

LornaJane gives you an excelent solution, another header you could use is :

header( 'refresh: 15; url=readoutput.php' );
echo '<h1>You will be re-directed in 15 seconds...</h1>';
call_the_process

This is a header that will refresh the actual page to the readoutput.php page after a fixed number of seconds. Make sure to put sufficient seconds for the process to terminate.

The solution by Lorna is efficient and ellegant too. : )

 

by: maratmuPosted on 2003-10-11 at 14:21:11ID: 9533985

Hi Lorna,

   If i print the message first then  how will it redirect the page, as redirection is done by headers and  we can not send any other info to the webpage before sending Headers.

 

by: MarcosBLPosted on 2003-10-11 at 15:45:24ID: 9534165

Maratmu, just combine the two answers... or make the redirection by javascript, this way:

Print a "please wait" message
Call the function
Use this javascript:
<SCRIPT LANGUAGE="JavaScript">window.location="yourfile.php";</script>

As Lorna said.... The redirect won't happen until that function has returned and in the meantime the use will see your wait message.

In adition, if you aren't sure all your users will have javascript enabled, you can put at the very start of the script a php header( 'refresh: 60; url=readoutput.php' );
This way, if javascript doesn't work in the client's part, at least a refresh will be done after 60 (or whatever you want) seconds. I hope it may help : ) Sorry for the bad english.

 

by: rstorey2079Posted on 2003-10-16 at 08:05:18ID: 9562676

why redirect to another page, when you can just flush a wait message to the screen:

echo "Please wait...";
flush();
passthru("\/opt\/ansys-v7.0\/v70\/ansys\/bin\/ansys70 -p ansysrf <'$filename'> output.out &", $y);
echo "...done!<br>";

 

by: MarcosBLPosted on 2003-10-16 at 08:11:52ID: 9562738

Flush doesn't work under Windows servers, but yes, it could be another solution. :)

 

by: rstorey2079Posted on 2003-10-16 at 08:20:04ID: 9562819

I figured the asker is on UNIX, since it says so in his question...

 

by: MarcosBLPosted on 2003-10-16 at 08:31:19ID: 9562921

Of course, of course, i readed it, my comment was only an advice on compatibility... the other method will work in both type of OS. Not a criticism, just a reflexion (Sorry for the bad english... is not my native language) : )

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