Viewing file:  PipeStdinInStdoutStdErrStreamSelect.php (1.71 KB) -rw-r--r--
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
define('ERR_SELECT_FAILED', 1);
define('ERR_TIMEOUT', 2);
define('ERR_READ_FAILED', 3);
define('ERR_WRITE_FAILED', 4);
$read = array(STDIN);
$write = array(STDOUT, STDERR);
stream_set_blocking(STDIN, 0);
stream_set_blocking(STDOUT, 0);
stream_set_blocking(STDERR, 0);
$out = $err = '';
while ($read || $write) {
$r = $read;
$w = $write;
$e = null;
$n = stream_select($r, $w, $e, 5);
if (false === $n) {
die(ERR_SELECT_FAILED);
} elseif ($n < 1) {
die(ERR_TIMEOUT);
}
if (in_array(STDOUT, $w) && strlen($out) > 0) {
$written = fwrite(STDOUT, (binary) $out, 32768);
if (false === $written) {
die(ERR_WRITE_FAILED);
}
$out = (binary) substr($out, $written);
}
if (null === $read && '' === $out) {
$write = array_diff($write, array(STDOUT));
}
if (in_array(STDERR, $w) && strlen($err) > 0) {
$written = fwrite(STDERR, (binary) $err, 32768);
if (false === $written) {
die(ERR_WRITE_FAILED);
}
$err = (binary) substr($err, $written);
}
if (null === $read && '' === $err) {
$write = array_diff($write, array(STDERR));
}
if ($r) {
$str = fread(STDIN, 32768);
if (false !== $str) {
$out .= $str;
$err .= $str;
}
if (false === $str || feof(STDIN)) {
$read = null;
if (!feof(STDIN)) {
die(ERR_READ_FAILED);
}
}
}
}
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