/** * 输出校验码图片二进制 * @param int $length 输出几个字符 * @param int $width 图片宽度 * @param int $height 图片高度 * */ public function image($length = 5, $width = 200, $height = 60, $minFontSize = 12, $maxFontSize = 16) { $fonts = array(_PLUGIN_ . 'Captcha/VeraBd.ttf', _PLUGIN_ . 'Captcha/VeraIt.ttf', _PLUGIN_ . 'Captcha/Vera.ttf'); $this->_captcha = new PhpCaptcha($fonts, $width, $height); $this->_captcha->SetMinFontSize($minFontSize); $this->_captcha->SetMaxFontSize($maxFontSize); $this->_captcha->UseColour(true); $this->_captcha->SetNumChars($length); $this->_captcha->Create(); }