<?php
namespace ExecWithFallback;
/**
* Execute command with exec(), open_proc() or whatever available
*
* @package ExecWithFallback
* @author Bjørn Rosell <it@rosell.dk>
*/
class ExecWithFallbackNoMercy
{
/**
* Execute. - A substitute for exec()
*
* Same signature and results as exec(): https://www.php.net/manual/en/function.exec.php
*
* This is our hardcore version of our exec(). It does not merely throw an Exception, if
* no methods are available. It calls exec().
* This ensures exactly same behavior as normal exec() - the same error is thrown.
* You might want that. But do you really?
* DANGER: On some systems, calling a disabled exec() results in a fatal (non-catchable) error.
*
* @param string $command The command to execute
* @param string &$output (optional)
* @param int &$result_code (optional)
*
* @return string | false The last line of output or false in case of failure
* @throws \Exception|\Error If no methods are available. Note: On some systems, it is FATAL!
*/
public static function exec($command, &$output = null, &$result_code = null)
{
foreach (self::$methods as $method) {
if (self::functionEnabled($method)) {
if (func_num_args() >= 3) {
if ($method == 'shell_exec') {
continue;
}
$result = self::runExec($method, $command, $output, $result_code);
} else {
$result = self::runExec($method, $command, $output);
}
if ($result !== false) {
return $result;
}
}
}
if (isset($result) && ($result === false)) {
return false;
}
// MIGHT THROW FATAL!
return exec($command, $output, $result_code);
}
}