call python from php with 2 return values

Question

I have a python script who is returning 2 values, humidity and temperature:

Temperature: 1.58050537109
Humidity: 89.2761230469

I call this srcipt from a PHP page but only one value is printed

<?php
echo exec("sudo python /home/pi/sht/sht31.py 2>&1");
?>

and only one humidity is printed. Could you please help me to print both value ? Thank you

without sudo you cannot read I2C and used my script...

jimbolino
– jimbolino

2016-01-12 21:15:05 +00:00
Commented Jan 12, 2016 at 21:15 — jimbolino
– jimbolino, Commented Jan 12, 2016 at 21:15

Tomasz Kowalczyk · Accepted Answer · 2016-01-12 20:45:15Z

2

If you call exec() with only command string, then it will return only the last line of output. To capture everything call it with second parameter to get all output:

exec('command', $output);
var_dump($output);

answered Jan 12, 2016 at 20:45

Tomasz Kowalczyk

10.5k6 gold badges56 silver badges70 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

jimbolino · Accepted Answer · 2016-01-12 20:51:08Z

0

now output is :

array(5) { [0]=> string(5) "False" [1]=> string(4) "True" [2]=> string(5) "False" [3]=> string(26) "Temperature: 1.56982421875" [4]=> string(23) "Humidity: 89.3859863281" }

with this code :

exec('sudo python /home/pi/sht/sht31.py' , $output);
var_dump($output);

answered Jan 12, 2016 at 20:51

jimbolino

951 silver badge9 bronze badges

1 Comment

Steve E. Over a year ago

Note that if the array already contains some elements, exec() will append to the end of the array. If you do not want the function to append elements, call unset() on the array before passing it to exec().

Collectives™ on Stack Overflow

call python from php with 2 return values

2 Answers 2

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related