is_null() 函数用于检测变量是否为 NULL。 $code=Input::get('code');if(!is_null($code)) {returnResponse::json(['status'=>1]); }else{returnResponse::json(['status'=>0]); }//first也是$select=Location::select('…')->where(…)->first()if(is_null($select)){//操作}else{//操作}...
在使用 Laravel Eloquent 模型时,我们要判断取出的结果集是否为空,但我们发现直接使用 is_null 或 empty是无法判段它结果集是否为空的!!! var_dump 之后我们很容易发现,即使取到的空结果集,Eloquent 仍然会返回object(Illuminate\Support\Collection)对象实例。 其实,Eloquent 已经给我们封装几个判断方法如下: $user...
*/protectedfunctionrunSoftDelete(){$query=$this->setKeysForSaveQuery($this->newModelQuery());$time=$this->freshTimestamp();$columns=[$this->getDeletedAtColumn()=>$this->fromDateTime($time)];$this->{$this->getDeletedAtColumn()}=$time;if($this->timestamps&&!is_null($this->getUpdate...
I am using password for user Authentication, and I after every authentication I assign a secure cookie that stores the passport token. A am being able to successfully authenticate using theAuth::attempt()method, but theAuth::user()is null. Even in the same controller, on the logout() met...
if($halt&& !is_null($response)) { return$response; } // If a boolean false is returned from a listener, we will stop propagating // the event to any further listeners down in the chain, else we keep on // looping through the listeners and firing every one in our sequence. ...
It is often helpful to have different configuration values based on the environment where the application is running. For example, you may wish to use a different cache driver locally than you do on your production server. To make this a cinch, Laravel utilizes theDotEnvPHP library. In a fre...
The problem is for sure not here. You probably try to run diffForHumans() in your view for example like this: $user->post_on->diffForHumans() but post_on is set to null instead of date. So you should verify where exactly you run this method, set this column as date and in you...
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* @param string|null $basePath * @return void */publicfunction__construct($basePath=null){if($basePath){$this->setBasePath($basePath);}$this->registerBaseBindings();$this->registerBaseServiceProviders();$this->registerCoreContainerAliases();} ...
// config/database.php 'redis' => [ 'client' => env('REDIS_CLIENT', 'phpredis'), // It is recommended to use phpredis for better performance. 'default' => [ 'host' => env('REDIS_HOST', 'localhost'), 'password' => env('REDIS_PASSWORD', null), 'port' => env('REDIS_...