The contains method is used to check if a given key or key/value pair exists within a collection. It is versatile and can be used with different types of data, such as arrays and objects. You can also provide a function as an argument to perform custom t
The field under validation must be present in the input data and not empty. A field is considered "empty" if one of the following conditions are true:The value is null. The value is an empty string. The value is an empty array or empty Countable object. The value is an uploaded file...
If no old input exists for the given field, null will be returned:1A Note On Optional FieldsBy default, Laravel includes the TrimStrings and ConvertEmptyStringsToNull middleware in your application's global middleware stack. These middleware are listed in the stack by the App\Http\Kernel class...
};//"hello"$example();//Inherited variable's value is from when the function is defined, not when called$message= "world\n";//"hello"$example();//Inherit by-reference$message= "hello\n";$example=function()use(&$message) {echo$message; };//"hello"$example();//The changed value ...
Collection MethodDescription evaluate()Run Symfony Expression Language on items cast()Cast items to primitive or class dataGet()dot notated get dataSet()dot notated set toDot()toDotclass call()call function on items pushTo()push to other array/collection ...
If this is executed on the query builder, it will return the original response. Cursor timeout To preventMongoCursorTimeoutexceptions, you can manually set a timeout value that will be applied to the cursor: AI检测代码解析 DB::collection('users')->timeout(-1)->get(); ...
To check if a meta key exists, use the hasMeta() scope:// Finds a published post with a meta flag. $post = Post::published()->hasMeta('featured_article')->first(); If you want to precisely match a meta-field, you can use the hasMeta() scope with a value.// Find a ...
dependencies: collection-visit "^1.0.0" component-emitter "^1.2.1" get-value "^2.0.6" has-value "^1.0.0" isobject "^3.0.1" set-value "^2.0.0" to-object-path "^0.3.0" union-value "^1.0.0" unset-value "^1.0.0" call-me-maybe@^1.0.1: version "1.0.1" ...
(用来初始化 vagrant,配置 homestead box 的程序。) a. git clone https://github.com/laravel/homestead.git ~/Homestead b. cd ~/Homestead c. git checkout v7.1.2(切换到稳定版本) d. bash init.sh或者init.bat(生成 Homestead.yaml 文件)配置(配置文件 Homestead.yaml)指定虚拟机...
* * @return void */ public function down() { Schema::dropIfExists('profiles'); } } 执行迁移后出现错误1$ php artisan migrate [16:14:49] [Illuminate\Database\QueryException] SQLSTATE[42000]: Syntax error or access violation: 1067 Invalid default value for 'user_id' (SQL: create table ...