php - Get return value of a command -

i've found many ways run command, exec,system,shell_exec, seem return command output.

i want return value (integer).

how can that?

<?php $retval = something("script.sh"); 

you can use exec()

exec("command", $output, $retval); echo "output: $output\n"; echo "return value: $retval\n"; 

exec() consumes $output , $retval reference , values set inside of exec(). check manual of exec() again.

btw, $output , $retval implicitly initialized, don't need exist before exec() call.