Reputation: 753
I have a python script which is needed to be run by php:
<?php
$command = escapeshellcmd('/home/Desktop/test.py');
$output = shell_exec($command);
echo $output;
?>
The out put of the python script is a binary file but I get the following error in the log: Unable to access the X Display, is $DISPLAY set properly?
The php code works fine from the terminal but no luck when I try to run it from the browser. Any idea what is going on? Ideally, I don't want to change my program. I want to know how you can rectify the X Display error. Is there a way to check if $DISPLAY is set properly? ( I am working with Ubuntu)
I tried this : pidof X && echo "yup X server is running" on my terminal and it is saying yup x server is running!
Upvotes: 3
Views: 619
Reputation: 717
try popen
$command = "/usr/bin/python /home/Desktop/test.py";
$handle = popen($command, "r");
"r" for read
$read = fread($handle, 10);
10 is the size of output you want to take,
echo $read ;
hope it helps,
Upvotes: 0
Reputation:
Add the following text as the first line of your Python script:
#!/usr/bin/python
Without this, the kernel doesn't know what interpreter to run your script with, and may end up trying to launch it using /usr/bin/import
(because that word probably appears on the first line of the script). The import
utility requires access to the X11 display (it's a screenshot utility, basically), which is why you're getting this error.
Upvotes: 1
Reputation: 452
The python file you need may need to open a window to run. You say you saw it run in terminal though? What's test.py? Is it propitiatory? If you try using this as a command in your PHP: (not 100% that the shell escape won't strip this so may need to comment that out)
python -c \'print \"Test\"\'
and see if you get the output text back. If so it's a python issue not PHP and the test.py file may be instantiating something that needs the $DISPLAY var set. PHP doesn't set the $DISPLAY var as it is shell commands not GUI.
Upvotes: 0