Input.php

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<?php

namespace Elgg\Http;

class Input {

    protected $request;

    public function __construct(Request $request) {
        $this->request = $request;
    }

    public function set($key, $value) {
        $this->request->request->set($key, $value);
    }

    public function get($key, $default = null, $filter_result = true) {
        $result = $default;

        $this->request->getContextStack()->push('input');

        $request = $this->request;
        $value = $request->get($key);
        if ($value !== null) {
            $result = $value;
            if ($filter_result) {
                $result = filter_tags($result);
            }
        }

        $this->request->getContextStack()->pop();

        return $result;
    }

    public function all($filter_result = true) {
        $query = $this->request->query->all();
        $attributes = $this->request->attributes->all();
        $post = $this->request->request->all();

        $result = array_merge($query, $attributes, $post);

        if ($filter_result) {
            $result = filter_tags($result);
        }

        return $result;
    }
}