Multiple Select - Multiple values not showing as pre-selected

[GoogleCodeExporter]

What steps will reproduce the problem?
1.
    $form->addElement(new PFBC\Element\Select("Test:", "test[]", array('1'=>'one','2'=>'two','3'=>'three'),
array('value'=>array(1,2),
            'multiple'=>'true'
        )));


What is the expected output? 

   A multi select box with 3 values, where 2 are pre-selected

What do you see instead?

   A multi-select box with 3 values, where only 1 is pre-selected

What version of the product are you using? On what operating system?

    Version 3.1
    PHP 5.3+

Please provide any additional information below.

    The problem appears to be in the file:

    https://code.google.com/p/php-form-builder-class/source/browse/trunk/PFBC/Element/Select.php

    Lines 23-26

    Once select is set the first time, the IF test fails for all future values even if in_array(..) is true.

    Commenting out the set value on line 25 is a hack solution that fixes the issue.

Original issue reported on code.google.com by docon...@gmail.com on 13 Aug 2013 at 11:53

[GoogleCodeExporter]

Hi
I replaced my render file with the following to make it work:

public function render() { 
        if(isset($this->_attributes["value"])) {
            if(!is_array($this->_attributes["value"]))
                $this->_attributes["value"] = array($this->_attributes["value"]);
        }
        else
            $this->_attributes["value"] = array();

        if( isset($this->_attributes["multiple"]) && $this->_attributes["multiple"] == true)
        {
            $multiple=true;
        }
        if($multiple && substr($this->_attributes["name"], -2) != "[]")
            $this->_attributes["name"] .= "[]";

        echo '<select', $this->getAttributes(array("value", "selected")), '>';
        $selected = false;
        foreach($this->options as $value => $text) {
            $value = $this->getOptionValue($value);
            echo '<option value="', $this->filter($value), '"';
            if((!$selected || $multiple)  && in_array($value, $this->_attributes["value"])) {
                echo ' selected="selected"';
                $selected = true;
            }   
            echo '>', $text, '</option>';
        }   
        echo '</select>';
    }

Original comment by jamil.ab...@qualizone-lb.com on 4 May 2015 at 6:09