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The reduce method is to reduce a collection into only one item. It does this by iterating over the collection and applying the $callback function on each element. The $callback function should define two parameters: $carry and $item . The $carry...
The count method returns the total number of messages stored within the MessageBag instance. The count method exists to satisfy the requirements of PHP's Countable interface.The signature of the count method is: 1 public function count ( ) ;The...
The mapToGroups method is similar to the mapToDictionary method, in that the mapToGroups method allows you take a collection of data and reduce it such that the final result is a collection of key/value pairs. The resulting value for each key may...
The getBags method is used to return an associative array containing all the MessageBag instances that are currently stored within the ViewErrorBag instance.The signature of the getBags method is: 1 public function getBags ( ) ;The following...
The pull method will remove an item from the collection whilst returning its value. If the item is not in the collection, the optional $default value will be returned. The pull method will modify the original collection.1 public function pull ( 2...
The policy helper function can be used to retrieve a policy (a policy class can be any valid PHP class) instance for a given $class . The $class can be either a string or an object instance. If no policies for the given $class have been registered...
validator(array $data = [], array $rules = [], array $messages = [], array $customAttributes = []) The validator helper function is a versatile helper function. If no arguments are supplied to the validator function (all arguments are optional),...
The diff method is used to determine which items in the collection are not present in the supplied $items collection. $items can be be either an array, or another instance of Collection . The diff method returns a new instance of Collection .1...
The pipe method is similar to the tap method in that it executes the provided $callback function on a copy of the collection; however, unlike the tap method, the pipe method returns the result of the callback function.1 public function pipe ( 2...
The $build helper method will create a new array with the original array's key/value pairs after they have been run through the $callback function. The $callback function should return an array with the new key and value. The signature for the...