countable

: This article describes how to use Iterator, ArrayAccess, and Countable in 24php. For more information about PHP tutorials, see. The iterator is often used to facilitate data management when reading a large amount of data in the database.

iterators are often used by us to facilitate data management when reading large amounts of data in a database. fruits[$this->position]; } Returns the current key public function key () { return $this->position } //Move

This article mainly sorts out the predefined PHP interfaces, which are usually used in the project process: IteratorAggregate (aggregate Iterator), Countable, ArrayAccess, Ite This article mainly sorts out the predefined PHP interfaces, which are

There are several predefined interfaces in PHP, more commonly used four interfaces (iteratoraggregate (aggregated aggregate iterator iterator),countable, Arrayaccess,iterator) to give you a detailed introduction. Iteratoraggregate (aggregated

This article mainly organized the PHP predefined interface, in the usual project process more commonly used four interfaces: Iteratoraggregate (polymeric aggregate iterator Iterator), countable, arrayaccess, Iterator , the need for friends can refer

This article mainly sorts out the predefined interfaces of PHP, which are commonly used in the project process: IteratorAggregate (Iterator of aggregate Iterator), Countable, ArrayAccess, Iterator, you can refer to the following predefined

In PHP programming, in the traversal of the array often need to calculate the length of the array as the end of the cycle of judgment conditions, while in PHP, the operation of the array is very frequent, so count is a common function, the following

Introduction in PHP has several predefined interfaces, but also useful     iteratoraggregate (aggregated aggregate iterator iterator) Iteratoraggregate extends traversable {Abstract public traversable getiterator (void)} This interface implements a

There are several predefined interfaces in PHP that compare four commonly used interfaces (countable,arrayaccess,Iterator, Iteratoraggregate (converged aggregate iterator iterator)).1. Countable interface　　As seen from the manual, the main class

Introduction to PHP Standard Library (SPL) notes SPL is the abbreviation of Standard PHP Library (PHP Standard Library. The Standard PHP Library (SPL) is a collection of interfaces and classes that are meant to solve common problems. According to