public function test_remove_default_command_path()
{
$paths = $this->paths;
$paths[] = $path = trim(shell_exec('which mysql ' . ignore_stderr()));
if (!$path) {
$this->markTestSkipped('Couldn\'t find mysql');
}
unset($paths['mysql']);
shuffle($paths);
$this->assertEquals($path, Backup_Utilities::get_executable_path($paths));
}
/**
* Attempt to work out path to a cli executable.
*
* @param array $paths An array of paths to check against.
*
* @return string|false The path to the executable.
*/
public static function get_executable_path($paths)
{
if (!self::is_exec_available()) {
return false;
}
$paths = array_map('wp_normalize_path', $paths);
foreach ($paths as $path) {
$output = $result = 0;
/**
* Attempt to call `--version` on each path, the one which works
* must be the correct path.
*
* We pipe STDERR to /dev/null so we don't leak errors.
*/
exec(escapeshellarg($path) . ' --version ' . ignore_stderr(), $output, $result);
// If the command executed successfully then this must be the correct path
if ($result === 0) {
return $path;
}
}
return false;
}