PHP E函数代码示例

 public function index()
 {
     $a = $_GET['a'];
     if (empty($a)) {
         E('参数错误');
     }
 }

 /**
  * 连接数据库方法
  * @access public
  */
 public function connect($config = '', $linkNum = 0)
 {
     if (!isset($this->linkID[$linkNum])) {
         if (empty($config)) {
             $config = $this->config;
         }
         $pconnect = !empty($config['params']['persist']) ? $config['params']['persist'] : $this->pconnect;
         $conn = $pconnect ? 'pg_pconnect' : 'pg_connect';
         $this->linkID[$linkNum] = $conn('host=' . $config['hostname'] . ' port=' . $config['hostport'] . ' dbname=' . $config['database'] . ' user=' . $config['username'] . '  password=' . $config['password']);
         if (0 !== pg_connection_status($this->linkID[$linkNum])) {
             E($this->error(false));
         }
         //设置编码
         pg_set_client_encoding($this->linkID[$linkNum], $config['charset']);
         //$pgInfo = pg_version($this->linkID[$linkNum]);
         //$dbVersion = $pgInfo['server'];
         // 标记连接成功
         $this->connected = true;
         //注销数据库安全信息
         if (1 != C('DB_DEPLOY_TYPE')) {
             unset($this->config);
         }
     }
     return $this->linkID[$linkNum];
 }

 public function check()
 {
     if (!$this->config['email'] || !$this->config['key'] || !$this->config['partner']) {
         E("支付宝设置有误！");
     }
     return true;
 }

 public function index()
 {
     try {
         //获取文章信息
         $article_id = I("get.article_id");
         if (!$article_id) {
             E("编号丢失");
         }
         $model_article = D("WxArticle");
         $info = $model_article->where("id = {$article_id}")->find();
         //初始化jssdk信息
         import("Think.WX.jssdk");
         $this->jssdk = new \JSSDK($this->getAppid(), $this->getAppsecret());
         $signPackage = $this->jssdk->GetSignPackage();
         //关注连接
         $subscribe_url = $this->model_config->val("subscribe_url");
         $web = $this->model_config->val("web");
         $this->assign("info", $info);
         $this->assign("subscribe_url", $subscribe_url);
         $this->assign("signPackage", $signPackage);
         $this->assign("uid", $this->user['uid']);
         $this->assign("web", $web);
         $this->display("index");
     } catch (\Exception $e) {
         $this->layer_alert($e->getMessage());
     }
 }

 public function login()
 {
     if (!IS_POST) {
         E('无效的页面');
     }
     $Verify = new \Think\Verify();
     //if(!$Verify->check($code)) $this->error('验证码错误');
     $db = M('login');
     $user = $db->where(array('username' => I('username')))->find();
     if (!$user || $user['password'] != I('password', '', md5)) {
         $this->error('账号或密码错误');
     }
     //更新最后一次登录时间及IP
     $data = array('id' => $user['id'], 'logintime' => time(), 'loginip' => get_client_ip());
     $db->save($data);
     session('uid', $user['id']);
     session('username', $user['username']);
     session('name', $user['name']);
     session('logintime', date('Y-m-d H:i:s', $user['logintime']));
     session('loginip', $user['loginip']);
     if ($user['jd'] == '1') {
         session('admin', '1');
     } else {
         session('admin', '0');
     }
     if (I('username') == 'admin') {
         session('iadmin', 1);
     } else {
         session('iadmin', 0);
     }
     $this->redirect('/Home/Index/index');
 }

 public function create_product_template()
 {
     $name = I('post.name');
     $code = I('post.code');
     $price = I('post.price', 0);
     $category = I('post.category');
     $type = I('post.type', 'product');
     $attributes = I('post.attributes/a');
     $description = I('post.description');
     //判断传进来的参数格式的正确性
     if (empty($product_template_name) || empty($product_template_category) || empty($default_code)) {
         E(201, 'parameters error');
     }
     //拼装路径
     $parent_path = substr($product_template_category, strrpos($product_template_category, ',') + 1);
     $product_template_category = substr($product_template_category, 0, strrpos($product_template_category, ','));
     //判断相对应的分类是否存在
     $category_array = explode(",", $product_template_category);
     //获得最后一级分类的id号
     $category_id = $this->modoo_category->create_category_by_path($parent_path, $product_template_category);
     //查看对应的属性值是否存在
     $attributes = $this->modoo_product_attribute->attribute_name_value_isset($attributes, false);
     //创建产品模版，并返回该产品模版的编号
     $product_template_infomation = $this->modoo_product_template->create_product_template($product_template_name, $type, $description, $price, $attributes, $category_id, $default_code);
     //判断是否创建成功
     if (is_numeric($product_template_infomation)) {
         E(0, 'create product template sucess', array('id' => $product_template_infomation));
     } else {
         E(401, 'create product template error', array('message' => $product_template_infomation));
     }
 }

 /**
  * 连接数据库方法
  * @access public
  * @throws ThinkExecption
  */
 public function connect($config = '', $linkNum = 0)
 {
     if (!isset($this->linkID[$linkNum])) {
         if (empty($config)) {
             $config = $this->config;
         }
         $this->linkID[$linkNum] = new \mysqli($config['hostname'], $config['username'], $config['password'], $config['database'], $config['hostport'] ? intval($config['hostport']) : 3306);
         if (mysqli_connect_errno()) {
             E(mysqli_connect_error());
         }
         $dbVersion = $this->linkID[$linkNum]->server_version;
         // 设置数据库编码
         $this->linkID[$linkNum]->query("SET NAMES '" . $config['charset'] . "'");
         //设置 sql_model
         if ($dbVersion > '5.0.1') {
             $this->linkID[$linkNum]->query("SET sql_mode=''");
         }
         // 标记连接成功
         $this->connected = true;
         //注销数据库安全信息
         if (1 != C('DB_DEPLOY_TYPE')) {
             unset($this->config);
         }
     }
     return $this->linkID[$linkNum];
 }

 /**
  * 设置支付驱动
  * @param string $class 驱动类名称
  */
 private function setDriver($class, $config)
 {
     $this->payer = new $class($config);
     if (!$this->payer) {
         E("不存在支付驱动：{$class}");
     }
 }

 /**
  * 连接会员系统
  * @param type $name 服务名
  * @param type $options 参数
  * @return \Libs\Service\class
  */
 public static function connect($name = '', $options = array())
 {
     if (false == isModuleInstall('Member')) {
         return new Passport($options);
     }
     if (empty($options['type'])) {
         //网站配置
         $config = cache("Member_Config");
         if ($config['interface']) {
             $type = $config['interface'];
         } else {
             $type = 'Local';
         }
     } else {
         $type = $options['type'];
     }
     //附件存储方案
     $class = strpos($type, '\\') ? $type : 'Libs\\Driver\\Passport\\' . ucwords(strtolower($type));
     if (class_exists($class)) {
         $connect = new $class($options);
     } else {
         E("通行证驱动 {$class} 不存在！");
     }
     return $connect;
 }

 /**
  * @copydoc ExtendedSaver::setData
  */
 public function setData(Data $data)
 {
     parent::setData($data);
     if (!$data->getFieldByName('news_segment')->getRowData(0)) {
         $f = new Field('news_segment');
         $translitedTitle = Translit::asURLSegment($data->getFieldByName('news_title')->getRowData(0));
         $filter = array();
         $pkF = $this->getData()->getFieldByName($this->getPK());
         if ($pkF = $pkF->getRowData(0)) {
             $filter[$this->getPK()] = $pkF;
         }
         for ($i = 0; $i < 30; $i++) {
             $tempTitle = $translitedTitle;
             if ($i) {
                 $tempTitle = $translitedTitle . '-' . $i;
             }
             $filter = array('news_segment' => $tempTitle);
             if (!$this->dbh->getScalar($this->getTableName(), 'news_segment', $filter)) {
                 break;
             } else {
                 $tempTitle = $translitedTitle . '-' . $i;
             }
         }
         $translitedTitle = $tempTitle;
         for ($i = 0, $l = sizeof(E()->getLanguage()->getLanguages()); $i < $l; $i++) {
             $f->setRowData($i, $translitedTitle);
         }
         $data->addField($f);
     }
 }

 /**
  * 生成接口参数xml
  */
 function createXml()
 {
     //检测必填参数
     if ($this->parameters["out_trade_no"] == null) {
         E("缺少统一支付接口必填参数out_trade_no！" . "<br>");
     } elseif ($this->parameters["body"] == null) {
         E("缺少统一支付接口必填参数body！" . "<br>");
     } elseif ($this->parameters["total_fee"] == null) {
         E("缺少统一支付接口必填参数total_fee！" . "<br>");
     } elseif ($this->parameters["notify_url"] == null) {
         E("缺少统一支付接口必填参数notify_url！" . "<br>");
     } elseif ($this->parameters["trade_type"] == null) {
         E("缺少统一支付接口必填参数trade_type！" . "<br>");
     } elseif ($this->parameters["trade_type"] == "JSAPI" && $this->parameters["openid"] == NULL) {
         E("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！" . "<br>");
     }
     $this->parameters["appid"] = C('WX_APPID');
     //公众账号ID
     $this->parameters["mch_id"] = C('WX_MCHID');
     //商户号
     $this->parameters["spbill_create_ip"] = $_SERVER['REMOTE_ADDR'];
     //终端ip
     $this->parameters["nonce_str"] = $this->createNoncestr();
     //随机字符串
     $this->parameters["sign"] = $this->getSign($this->parameters);
     //签名
     return $this->arrayToXml($this->parameters);
 }

 /**
  * @param array $config Configurations.
  * @param bool $return
  */
 public function __construct($config, $return = false)
 {
     $this->appId = $config['appId'];
     $this->appPublic = $config['public'];
     $this->appSecret = $config['secret'];
     $this->callbackUrl = ($base = E()->getSiteManager()->getCurrentSite()->base) . 'auth.php?okAuth&return=' . (!$return ? $base : $return);
 }

 /**
  * Show result.
  */
 protected function showResult()
 {
     list($formID) = $this->getStateParams();
     E()->getRequest()->shiftPath(2);
     $this->results = $this->document->componentManager->createComponent('form', 'Energine\\forms\\components\\FormResults', array('form_id' => $formID));
     $this->results->run();
 }

function http($url, $params, $method = 'GET', $header = array(), $multi = false)
{
    $ch = curl_init();
    $opts = array(CURLOPT_TIMEOUT => 30, CURLOPT_RETURNTRANSFER => 1, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_SSL_VERIFYHOST => false, CURLOPT_HTTPHEADER => $header);
    switch (strtoupper($method)) {
        case 'GET':
            $opts[CURLOPT_URL] = $url . '?' . http_build_query($params);
            break;
        case 'POST':
            $params = $multi ? $params : http_build_query($params);
            $opts[CURLOPT_URL] = $url;
            $opts[CURLOPT_POST] = 1;
            $opts[CURLOPT_POSTFIELDS] = $params;
            break;
        default:
            E('不支持的请求方式！');
    }
    curl_setopt_array($ch, $opts);
    $output = curl_exec($ch);
    $error = curl_error($ch);
    curl_close($ch);
    if ($error) {
        exit('请求发生错误：' . $error);
    }
    return $output;
}

 /**
  * @copydoc IBuilder::build
  *
  * @throws SystemException 'ERR_DEV_NO_DATA_DESCRIPTION'
  */
 public function build()
 {
     $result = false;
     if (!$this->dataDescription) {
         throw new SystemException('ERR_DEV_NO_DATA_DESCRIPTION', SystemException::ERR_DEVELOPER);
     }
     foreach ($this->dataDescription as $fieldName => $fieldInfo) {
         $result['meta'][$fieldName] = ['title' => $fieldInfo->getPropertyValue('title'), 'type' => $fieldInfo->getType(), 'key' => $fieldInfo->getPropertyValue('key') && $fieldInfo->getPropertyValue('index') == 'PRI' ? true : false, 'visible' => true, 'name' => $fieldInfo->getPropertyValue('tableName') . "[{$fieldName}]", 'rights' => $fieldInfo->getRights(), 'field' => $fieldName, 'sort' => $fieldInfo->getPropertyValue('sort')];
     }
     if (!$this->data->isEmpty()) {
         for ($i = 0; $i < $this->data->getRowCount(); $i++) {
             foreach ($this->dataDescription as $fieldName => $fieldInfo) {
                 $fieldValue = null;
                 if ($this->data->getFieldByName($fieldName)) {
                     $fieldValue = $this->data->getFieldByName($fieldName)->getRowData($i);
                     if (is_null($fieldValue)) {
                         $fieldValue = '';
                     }
                     if ($fieldName == 'upl_publication_date') {
                         if (!empty($fieldValue)) {
                             $fieldValue = E()->Utils->formatDate($fieldValue, $fieldInfo->getPropertyValue('outputFormat'), FieldDescription::FIELD_TYPE_DATETIME);
                         }
                     }
                 }
                 $result['data'][$i][$fieldName] = $fieldValue;
             }
         }
     }
     $result['breadcrumbs'] = $this->breadcrumbs;
     $result['result'] = true;
     $result['mode'] = 'select';
     $this->result = $result;
     return true;
 }