I've tried to get output from proc_open
method in php, but, when I print it, I got empty.
$descriptorspec = array( 0 => array("pipe", "r"), 1 => array("pipe", "w"), 2 => array("file", "files/temp/error-output.txt", "a") ); $process = proc_open("time ./a a.out", $descriptorspec, $pipes, $cwd);
as long as I know, I can get the output with stream_get_contents()
echo stream_get_contents($pipes[1]); fclose($pipes[1]);
But I can't do that.. any suggestion?
Thx before...
Your code more or less works for me. time
prints its output to stderr
so if you're looking for that output, look in your file files/temp/error-output.txt
. The stdout
pipe $pipes[1]
will only contain the output of the program ./a
.
My repro:
[edan@edan tmp]$ cat proc.php
<?php
$cwd='/tmp';
$descriptorspec = array(
0 => array("pipe", "r"),
1 => array("pipe", "w"),
2 => array("file", "/tmp/error-output.txt", "a") );
$process = proc_open("time ./a a.out", $descriptorspec, $pipes, $cwd);
echo stream_get_contents($pipes[1]);
fclose($pipes[1]);
?>
[edan@edan tmp]$ php proc.php
a.out here.
[edan@edan tmp]$ cat /tmp/error-output.txt
real 0m0.001s
user 0m0.000s
sys 0m0.002s