/**
* 生成验证码2
* @param type $sessionName
* @param type $width
* @param type $height
*/
static function validatePic2($sessionName = "defaultSess", $width = 0, $height = 0)
{
require Yii::app()->basePath . '/components/SecurImage.php';
$validateImage = new Securimage();
$validateImage->use_gd_font = true;
$validateImage->gd_font_file = Yii::app()->basePath . "/components/font/crass.gdf";
$validateImage->draw_lines = false;
$validateImage->arc_linethrough = false;
$validateImage->sess_name = $sessionName;
if ($width != 0) {
$validateImage->image_width = $width;
}
if ($height != 0) {
$validateImage->image_height = $height;
}
$code = $validateImage->createCode();
Yii::app()->session[$sessionName] = strtolower($code);
$validateImage->show();
}