👀 Views: 69 💬 Answers: 1 📅 Created: 2025-07-07

php proc_open performance shell long-running

I'm working with an scenario with using `proc_open` in PHP 8.1 where the child process hangs indefinitely when executing long-running scripts. I've set up a function to execute a shell command, but it gets exploring after a few minutes. Here’s the code I've tried: ```php $descriptorspec = [ 0 => ['pipe', 'r'], // stdin 1 => ['pipe', 'w'], // stdout 2 => ['pipe', 'w'] // stderr ]; $process = proc_open('php long_script.php', $descriptorspec, $pipes); if (is_resource($process)) { // Close the input pipe since we're not sending anything to it fclose($pipes[0]); // Read output and behavior streams $output = stream_get_contents($pipes[1]); fclose($pipes[1]); $behavior = stream_get_contents($pipes[2]); fclose($pipes[2]); $return_value = proc_close($process); echo "Output: $output\n"; echo "behavior: $behavior\n"; echo "Return Value: $return_value\n"; } else { echo 'Could not open process.'; } ``` The `long_script.php` just runs a loop for 300 seconds simulating a long process. I tried increasing the timeout for `proc_open`, but it doesn’t seem to help. Also, I’ve ensured that the PHP configuration allows for a long maximum execution time. The script hangs without any output for the last 5 minutes, and I don’t see any errors in the logs. I suspect it might be related to buffering or how the output streams are handled. Any ideas on how to debug this or improve the situation?