Execute shell command from PHP

Question

I want to run some command from php code. When I run code from terminal it works fine without error. But when I run same command from php code it gives me error like this:

/usr/bin/php: /opt/lampp/lib/libxml2.so.2: version `LIBXML2_2.9.0' not found (required by /usr/bin/php)

I run command : locate libxml2.so , this command gives output like this:

/opt/lampp/lib/libxml2.so
/opt/lampp/lib/libxml2.so.2
/opt/lampp/lib/libxml2.so.2.8.0
/usr/lib/i386-linux-gnu/libxml2.so
/usr/lib/i386-linux-gnu/libxml2.so.2
/usr/lib/i386-linux-gnu/libxml2.so.2.9.0

So, seems like 2.9.0 version is already installed. So, how to execute command without this error?

Answer 1

Use shell_exec function to exec it. Try <?php echo shell_exec('locate libxml2.so');

Answer 2

Finally I succeed. Install phpcs (or any module you want to execute by apache of xampp) then install inside "bin" of xampp.