PHP：SSH连接和python脚本执行

Question

I have my front end with a button, this button talks to backend. The backend is starting a remote script :

<?php
$myfile = fopen("newfile.txt", "w") or die("Unable to open file!");
$connection = ssh2_connect('192.168.56.180', 22);
ssh2_auth_password($connection, 'root', 'password');
$stream = ssh2_exec($connection, 'python /WATSON/APP/test/testlistrbk.py');
stream_set_blocking($stream, true);
$stream_out = ssh2_fetch_stream($stream, SSH2_STREAM_STDIO);
echo $stream_out_contente;
fwrite($myfile, $stream_out);
fclose($myfile);
?> 

I have 2 issues , First one, php should wait the python script to finish as it said here but it does not.

Second one, It gives me the following :

PHP Warning: fwrite() expects parameter 2 to be string, resource given in /var/www/html/WEBAPP/wa_start.php on line 41

Answer 1

use stream_get_contents(stream_out);

In your code $stream_out = ssh2_fetch_stream($stream, SSH2_STREAM_STDIO); this will return resource not string output. Try this code.

$myfile = fopen("newfile.txt", "w") or die("Unable to open file!");

$connection = ssh2_connect('192.168.56.180', 22);
ssh2_auth_password($connection, 'root', 'password');
$stream = ssh2_exec($connection, 'python /WATSON/APP/test/testlistrbk.py');

stream_set_blocking($stream, true);

$outputStream = ssh2_fetch_stream($stream, SSH2_STREAM_STDIO);
$errorStream = ssh2_fetch_stream($stream, SSH2_STREAM_STDERR);

echo "Output: " . stream_get_contents($outputStream);
echo "Error: " . stream_get_contents($errorStream);

fwrite($myfile, $outputStream.$errorStream);
fclose($myfile);