How to integrate PHP and R on Windows? -

having issues integrating php , r. working article:

http://www.r-bloggers.com/integrating-php-and-r/

r installed , verified working our r script:

rscript c:\inetpub\wwwroot\client\includes\decisiontreepredictor.r 20 10 o 1000 10000 5000 0.2 10.2 

printing single value result of calculations:

[1] "0" 

(the path rscript.exe set in windows environmental variables)

i have php script in place using exec() tests commands such as:

$result = exec('dir',$output,$returnvar); echo "<br>result ". print_r($result,true); echo "<br>output <pre>". print_r($output,true) , "</pre>"; echo "<br>return ". print_r($returnvar,true); 

returning:

result 2 dir(s) 117,749,354,496 bytes free output  array (     [0] =>  volume in drive c c_drive     [1] =>  volume serial number 7eb2-a074     [2] =>      [3] =>  directory of c:\inetpub\wwwroot\client\temp     [4] =>      [5] => 05/17/2014  10:29 pm              .     [6] => 05/17/2014  10:29 pm              ..     [7] => 05/16/2014  09:24             5,181 dbimporttest.php     [8] => 05/17/2014  10:29 pm                 0 routput.txt     [9] => 05/17/2014  11:42 pm               701 rscripttest.php     [10] => 05/16/2014  04:59 pm               425 whoami.php     [11] =>                4 file(s)          6,307 bytes     [12] =>                2 dir(s)  117,749,354,496 bytes free )   return 0 

when try run r script within exec command, fails:

$result = exec('rscript.exe c:\inetpub\wwwroot\client\includes\decisiontreepredictor.r 20 10 o 1000 10000 5000 0.2 10.2',$output,$returnvar); echo "<br>result ". print_r($result,true); echo "<br>output <pre>". print_r($output,true) , "</pre>"; echo "<br>return ". print_r($returnvar,true); 

returning:

result  output  array ( )   return 1 

i running:

• windows server 8 r2
• iis 8
• php 5.5
• r 3.1

unable exec() work or output errors usable, decided seek alternative route. using com class seems have given me looking for.

here final, operational code:

$command = 'c:\program files\r\r-3.1.0\bin\rscript.exe c:\inetpub\wwwroot\client\includes\decisiontreepredictor.r 20 10 o 1000 10000 5000 0.2 10.2'; $pcom = new com("wscript.shell"); $pshell = $pcom->exec($command); $sstdout = $pshell->stdout->readall;    # standard output $sstderr = $pshell->stderr->readall;    # error echo "<pre>$sstdout</pre>"; 

odd couldn't exec() job seems solution preferred bloggers discussing r/php integration.

anyway, hope solution helps else finds in situation!

p.s. want make sure extension on in php.ini (it off default on install): extension=php_com_dotnet.dll