解析错误：语法错误，意外'['in

Question

Parse error: syntax error, unexpected '[' in $results = [];

function class_uses_recursive($class)
{
    $results = [];

    foreach (array_merge([$class => $class], class_parents($class)) as $class)
    {
        $results += trait_uses_recursive($class);
    }

    return array_unique($results);
}

please help me

Answer 1

If you're using an older version of PHP (pre-5.4 I think), this syntax isn't supported:

$results = [];

You'd have to use the older version:

$results = array();