Demystifying Passthru Unlocking the Secrets of Return Value Management

The function has no return value, so $result = NULL . We could add a return statement to the function if we wanted to, and that value would be ... xx with php 5 on fedora and I am trying to do the following in php: $last_line = passthru('/root/testme', $retval); echo "
"; echo $retval; The passthru() function is similar to the exec() function in that it executes a command . This function should be used in place of exec() or system() when ... ... exec() or system() - nothing was being returned. I was using the full ... return value. The error will be logged into the error_log of your webserver ... When i exec from PHP site --- return value is "Message ... OK" on PHP site. But no messages has sent. I don't know why! This is sample code : [index.php] "; system("man man | col -b", $return_val); echo " ...