I want to generate a file by batch.php, which is linked to the button in this page:
<?php
echo "Hello world!";
'cat 123 > uploads/cat.txt';
echo "Bye world!";
?>
Clicking on the button does launch batch.php, however, cat.txt is NOT generated on the server side.
Does anyone know how to fix this? Maybe I need to setup some permission for the folder?
Edit 1:
ps aux|grep -E 'apache|www-data|http|php' returns:
root 12269 0.0 2.1 278256 10796 ? Ss Aug02 3:38 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)
www-data 12301 0.0 0.8 97728 4044 ? S Aug02 3:27 nginx: worker process
www-data 12302 0.0 0.8 98104 4296 ? S Aug02 3:54 nginx: worker process
www-data 12303 0.0 0.9 97940 4520 ? S Aug02 3:46 nginx: worker process
www-data 12304 0.0 0.9 98132 4544 ? S Aug02 3:47 nginx: worker process
timur 14888 0.0 0.1 11712 932 pts/0 S+ 15:04 0:00 grep --color=auto -E apache|www-data|http|php
www-data 18748 0.0 8.7 298196 43668 ? S Sep07 0:12 php-fpm: pool www
www-data 18749 0.0 6.4 286660 32432 ? S Sep07 0:11 php-fpm: pool www
www-data 21100 0.0 8.3 296204 42048 ? S Sep05 1:02 php-fpm: pool www
ls -l returns:
total 20
-rw-r--r-- 1 root root 84 Sep 12 08:33 batch.php
-rw-r--r-- 1 timur timur 5120 Sep 12 09:00 generateFile.exe
-rw-rw-r-- 1 timur timur 138 Sep 12 08:28 index.html
drwxrwxrwx 2 timur timur 4096 Sep 12 15:03 uploads
I granted 777 to uploads, and I tried all the possible owner names and owner groups (ie, timur:timur, www-data:www-data and root:root), but none of them works...
The key is to write exec('cat 123 > uploads/cat.txt') or shell_exec('cat 123 > uploads/cat.txt') instead of 'cat 123 > uploads/cat.txt'.
Then, although drwxrwxrwx 2 timur timur 4096 Sep 12 15:03 uploads works, assigning 755 and www-data:www-data (reserved to PhP) to uploads is more correct.