how get the output from process opend by popen in php?

Question

file a.php:

file b.php:

Answer 1

Check the second example in the documentation on popen, it shows exactly how to do that:

&1', 'r');
echo "'$handle'; " . gettype($handle) . "\n";
$read = fread($handle, 2096);
echo $read;
pclose($handle);

This snippet reads from stderr. Remove the pipe to read from stdout.