note 95207 added to function.proc-open
| From: | cbn at grenet dot org | Date: | Fri, 18 Dec 2009 15:30:07 +0000 |
| Subject: | note 95207 added to function.proc-open | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-164106@lists.php.net to get a copy of this message | ||
Display output (stdout/stderr) in real time, and get the real exit code in pure PHP (no shell
workaround!). It works well on my machines (debian mostly).
#!/usr/bin/php
<?php
/*
* Execute and display the output in real time (stdout + stderr).
*
* Please note this snippet is prepended with an appropriate shebang for the
* CLI. You can re-use only the function.
*
* Usage example:
* chmod u+x proc_open.php
* ./proc_open.php "ping -c 5 google.fr"; echo RetVal=$?
*/
define(BUF_SIZ, 1024); # max buffer size
define(FD_WRITE, 0); # stdin
define(FD_READ, 1); # stdout
define(FD_ERR, 2); # stderr
/*
* Wrapper for proc_*() functions.
* The first parameter $cmd is the command line to execute.
* Return the exit code of the process.
*/
function proc_exec($cmd)
{
$descriptorspec = array(
0 => array("pipe", "r"),
1 => array("pipe", "w"),
2 => array("pipe", "w")
);
$ptr = proc_open($cmd, $descriptorspec, $pipes, NULL, $_ENV);
if (!is_resource($ptr))
return false;
while (($buffer = fgets($pipes[FD_READ], BUF_SIZ)) != NULL
|| ($errbuf = fgets($pipes[FD_ERR], BUF_SIZ)) != NULL) {
if (!isset($flag)) {
$pstatus = proc_get_status($ptr);
$first_exitcode = $pstatus["exitcode"];
$flag = true;
}
if (strlen($buffer))
echo $buffer;
if (strlen($errbuf))
echo "ERR: " . $errbuf;
}
foreach ($pipes as $pipe)
fclose($pipe);
/* Get the expected *exit* code to return the value */
$pstatus = proc_get_status($ptr);
if (!strlen($pstatus["exitcode"]) || $pstatus["running"]) {
/* we can trust the retval of proc_close() */
if ($pstatus["running"])
proc_terminate($ptr);
$ret = proc_close($ptr);
} else {
if ((($first_exitcode + 256) % 256) == 255
&& (($pstatus["exitcode"] + 256) % 256) != 255)
$ret = $pstatus["exitcode"];
elseif (!strlen($first_exitcode))
$ret = $pstatus["exitcode"];
elseif ((($first_exitcode + 256) % 256) != 255)
$ret = $first_exitcode;
else
$ret = 0; /* we "deduce" an EXIT_SUCCESS ;) */
proc_close($ptr);
}
return ($ret + 256) % 256;
}
/* __init__ */
if (isset($argv) && count($argv) > 1 && !empty($argv[1])) {
if (($ret = proc_exec($argv[1])) === false)
die("Error: not enough FD or out of memory.\n");
elseif ($ret == 127)
die("Command not found (returned by sh).\n");
else
exit($ret);
}
?>
----
Server IP: 195.221.21.36
Probable Submitter: 194.206.220.193
----
Manual Page -- http://www.php.net/manual/en/function.proc-open.php
Edit -- https://master.php.net/note/edit/95207
Del: integrated -- https://master.php.net/note/delete/95207/integrated
Del: useless -- https://master.php.net/note/delete/95207/useless
Del: bad code -- https://master.php.net/note/delete/95207/bad+code
Del: spam -- https://master.php.net/note/delete/95207/spam
Del: non-english -- https://master.php.net/note/delete/95207/non-english
Del: in docs -- https://master.php.net/note/delete/95207/in+docs
Del: other reasons-- https://master.php.net/note/delete/95207
Reject -- https://master.php.net/note/reject/95207
Search -- https://master.php.net/manage/user-notes.php