PHP exec() + stderr, stdout, & return code

Run a command in php and get standard output (stdout), standard error (stderr), and the return code / return value.

function pipe_exec($cmd, $input='') {
    $proc = proc_open($cmd, array(array('pipe', 'r'),
                                  array('pipe', 'w'),
                                  array('pipe', 'w')), $pipes);
    fwrite($pipes[0], $input);
    fclose($pipes[0]);
 
    $stdout = stream_get_contents($pipes[1]);
    fclose($pipes[1]);
 
    $stderr = stream_get_contents($pipes[2]);
    fclose($pipes[2]);
 
    $return_code = (int)proc_close($proc);
 
    return array($return_code, $stdout, $stderr);
}
// Example usage.
list($return_code, $stdout, $stderr) = pipe_exec('ls');
Did this help you? Please let me know with a comment. Thank you
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5 comments (RSS)

  1. anonymous

    Thanks. Is there any way to both read stderr and allow it out as if it hasn't been interfered with?

  2. anonymous

    `tee' might be what you're looking for.

  3. anonymous

    "tee - read from standard input and write to standard output and files"

  4. anonymous

    Hi, thanks for this useful piece of code. Could you clarify under which license you're providing it (I'd suggest public domain, CC0, or BSD-2 clause), and if you are the original writer ? Thank you !

  5. anonymous

    @license, public domain.

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