Is it possible to access environment variables of a child process in PHP?

To access environment variables of a child process in PHP, you can use the `proc_open` function to create the child process and retrieve its environment variables. By setting the `env` parameter of `proc_open` to `$_ENV`, you can pass the current environment variables to the child process. Then, you can use `proc_get_status` to get information about the child process, including its environment variables. 

$descriptors = array(
    0 => array("pipe", "r"),
    1 => array("pipe", "w"),
    2 => array("file", "/tmp/error-output.txt", "a")
);

$process = proc_open('echo $MY_ENV_VAR', $descriptors, $pipes, null, $_ENV);

if (is_resource($process)) {
    $status = proc_get_status($process);
    echo "Child process environment variables: " . print_r($status['env'], true);
    proc_close($process);
}

Keywords

PHP environment variables child process access system functions

Related Questions