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The following two code examples are equivalent: 1 <?php 2 3 use Illuminate \ Support \ Collection ; 4 5 // Create a new collection instance. 6 $ collection = new Collection ( [ 7 ' first ' , ' second ' , ' third ' 8 ] ) ; 9 10 // Create a new...
The flatMap method can be used with higher order messaging, which allows us to invoke collection methods and access object instance properties using PHP's property accessors syntax. In the reject and partition sections, we created the following...
The signature of the prepend method is: 1 public static function prepend ( 2 $ array , 3 $ value , 4 $ key = null 5 ) ;
The following examples demonstrate the usage of the prepend helper method: 1 use Illuminate \ Support \ Arr ; 2 3 // Create an array to work with. 4 $ array = [ 5 ' first_name ' => ' Jane ' , 6 ' last_name ' => ' Doe ' 7 ] ; 8 9 // Add a new item...
The array_prepend helper function is a shortcut to calling the Arr::prepend helper method. This function is declared in the global namespace.
1 public function filter ( 2 callable $ callback = null 3 ) ;
The following examples demonstrate the behavior of the filter method; the results of the filtering process will appear above the method invocation as a comment: 1 use Illuminate \ Support \ Collection ; 2 3 // Create a new collection instance. 4 $...
The filter method can also be used with higher order messaging, which allows us to invoke collection methods and access object instance properties using PHP's property accessors syntax. In the reject section, we implemented a Product class that...
The signature of the add method is: 1 function function add ( 2 $ key , 3 $ message 4 ) ;
The following code example demonstrates how to add messages to a MessageBag instance: 1 use Illuminate \ Support \ MessageBag ; 2 3 // Create a new MessageBag instance. 4 $ messageBag = new MessageBag ; 5 6 // Add new messages to the message bag....