Demystifying passthru Output A Detailed Tutorial for Developers

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() passthru() ends up with nothing, how can i debug passthru ? ... for the examples that I gave, you should be using $output, $retcode and $rawoutput ... With the PHP script below, there is no problem retrieving the results from Apache on the command line: Code: $command = 'CMD /D /C '.$ ... The PHP exec() function does not return a boolean true/false, rather it returns the last line of output from the invoked command. output, String, Where to direct stdout. n/a, No. error, String, Where to ... Whether to use PHP's passthru() function instead of exec(). false, No. spawn ... If you've ever written a shell or Perl script, you know that you can capture the output of other commands inside the backtick operator. For example, Listing 1 ... ... output [, int &$return_var ]] ). passthru. Execute an external program and display raw output. * binary data which needs to be passed directly ... passthru() executes a command and sends the output directly back to the browser as binary data. This function should be used when the server generates binary ... Executing commands · passthru() and system() pass the output of the command (what it would display) directly to the application client in the web response, ... theme('status_messages') will output all of your messages those are pushed using drupal_set_message(). EDIT: If you are processing your form ...