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The map method applies a given $callback to each item in the collection. The $callback can modify the item which will be added to a new collection. The map method does not modify the original collection, but returns a new collection instance with...
The length helper method simply returns the length of the given $value , using PHP's internal character encoding. The signature for the length helper method is: length($value) 1 use Illuminate \ Support \ Str ; 2 3 // 5 4 echo Str :: length ( '...
The flatMap method is used in the same way as the map method but will collapse the resulting collection. The flatMap method does not modify the original collection; it will return a new, modified collection its return result.
The prepend helper method is used to push a new $value onto the beginning of an existing $array . It defines one optional parameter: $key . If an argument is supplied for $key , the new item will be given that key. Supply a value for $key if you...
The filter method applies a filter to the collection. An optional $callback can be supplied to the filter method. If no $callback is supplied to the filter method, any value in the collection that evaluates to false will be removed from the final...
The ls command is a useful command that can be used to learn more any class or instantiated object. It is capable of listing any defined variables, constants, functions, classes, interfaces, traits, properties and methods that might be defined in...
The add method adds a new message to the MessageBag instance. The message is identified by a given $key and contains the value $message . The add method returns a reference to the current MessageBag instance.
The getBag method can be used to retrieve a MessageBag instance associated with the provided $key . If a MessageBag instance does not exist with the provided $key , a new instance of "Illuminate\Support\MessageBag" will returned instead. The...
The report function is used to report an exception to the applications exception handler. By default, the application exception handler is located at app/Exceptions/Handler.php . The report function will invoke the report method of the application...
The unwrap method is the logical opposite of the wrap method, in that if the provided value is already a collection, the collection's underlying items will be returned. If the provided value is not a collection instance, the value is simply...