2018-12-25 14:49
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PHP - shell_exec似乎有时间限制

I'm running a python script while running a php script online. Because of debugging I made one php script:

echo shell_exec("python ../");

If run it (on linux) with php test.php it works and outputs some data. But if I try to access the output on the web, it will give an empty string back. takes 8 seconds (so no time limit should be reached).

#!/usr/bin/env python
import sys
import Adafruit_DHT

sensor = Adafruit_DHT.DHT11;
pin = 4;

humiture, temperature = Adafruit_DHT.read_retry(sensor, pin)

if humiture is not None and temperature is not None:
    print("{\"temperature\": " + str(temperature) + ", \"humiture\":"  + str(humiture) + "}")

Some other commands like ls will work always.

I think there is a problem with the duration but how can I pass this issue?

Solution: Solved my problem giving permissions:

sudo chmod g+s /var/www  
sudo chmod 775 /var/www  
sudo chown -R www-data:www-data /var/www

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