php exec not executing if called from browser

Question

This is a recurring topic in stackoverflow, but finally I couldn't find any clear solution.

I'VE THIS PHP SCRIPT ON MY LOCAL XAMPP (OS X)

test.php

<?php exec('lpr -MyPrinter photos/image.jpg'); ?>

IT WORKS IF I CALL IT FROM TERMINAL

kurt$ php test.php

BUT IT DOES NOT WORK IF I CALL IT FROM BROWSER

http://localhost/mysite/test.php

Consider that my security requirements are very low, because I'll use this script locally only for personal purposes. Can you address me to the right solution?

bet its i user permission issue, but dont know how os x does such things — user557846
– user557846, Commented Nov 8, 2012 at 18:28
Adding to @Dagon's comment, check the user and group that your script is running as when executed by your server. I'm also not exactly sure how users/groups/permissions are handled on OSX, but your server is probably executing the scripts as a user created specifically for the server, which will have restricted permissions. — G-Nugget
– G-Nugget, Commented Nov 8, 2012 at 18:43
Also not sure about osx, but quite often php cli (command line interface) has a different php.ini. It is possible that the cli php.ini has exec enabled, while the web php.ini has not. — Damien Overeem
– Damien Overeem, Commented Nov 9, 2012 at 12:36

Wolfgang Stengel · Accepted Answer · 2012-11-11 17:36:16Z

2

Could have any number of reasons, but I suggest to look at the error message. The exec() function will not return it, but you can redirect error output to a temporary file:

<?php exec('lpr -MyPrinter photos/image.jpg 2> /tmp/error.txt'); ?>

Look into /tmp/error.txt after calling the script in the browser.

answered Nov 11, 2012 at 17:36

Wolfgang Stengel

2,8561 gold badge19 silver badges22 bronze badges

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

Collectives™ on Stack Overflow

php exec not executing if called from browser

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related