app/code/community/Adyen/Payment/Helper/Installments.php
public function makeArrayFieldValue($value)
    {
        $value = $this->_unserializeValue($value);
        if (!$this->_isEncodedArrayFieldValue($value)) {
            $value = $this->_encodeArrayFieldValue($value);
        }

        return $value;
    }
public function makeArrayFieldValue($value)
    {
        $value = $this->_unserializeValue($value);
        if (!$this->_isEncodedArrayFieldValue($value)) {
            $value = $this->_encodeArrayFieldValue($value);
        }

        return $value;
    }
public function makeArrayFieldValue ( $ value ) { $ value = $ this -> _unserializeValue ( $ value ) ; if ( ! $ this -> _isEncodedArrayFieldValue ( $ value ) ) { $ value = $ this -> _encodeArrayFieldValue ( $ value ) ; } return $ value ; }
Make value readable by Mage_Adminhtml_Block_System_Config_Form_Field_Array_Abstract

@param mixed $value
@return array
Make value readable by Mage_Adminhtml_Block_System_Config_Form_Field_Array_Abstract