Form.php

<?php

class EtuDev_Util_Form
{


    /**
     * @param array $attributes
     * @param array $exclude
     *
     * @return string
     */
    static public function parseAttributesToString($attributes, $exclude = array())
    {
        $loop_attributes = array_intersect(
            array_keys($attributes),
            array(
                 'title',
                 'multiple',
                 'checked',
                 'disabled',
                 'readonly',
                 'style',
                 'maxlength',
                 'autocomplete',
                 'name',
                 'onfocus',
                 'onblur',
                 'onclick',
                 'onchange',
                 'onkeyup',
                 'onkeydown',
                 'onmouseover',
                 'onmouseout',
                 'oninvalid',
                 'required',
                 'placeholder',
                 'spellcheck'
            )
        );

        $attributes_string = '';

        $changeToSame = array('required', 'checked', 'selected');

        foreach ($loop_attributes as $a) {
            if (!$exclude || !in_array($a, $exclude)) {
                $v = $attributes[$a];
                if (in_array($a, $changeToSame)) {
                    $v = $a;
                }
                $attributes_string .= ' ' . $a . '="' . $v . '"';
            }
        }

        return $attributes_string;
    }

    /**
     * @static
     *
     * @param $classes
     *
     * @return string
     */
    static public function parseClasses($classes)
    {
        return ' class="' . implode(' ', array_unique($classes)) . '"';
    }
}