![]() ![]() ![]() ![]() To start with, each() will return the first element, then the second element, then the third, and so on, until it finds there are no elements left, in which case it will return false and end the loop. All arrays have a cursor, and you can freely move it around - it is used in the while loop above, where we need to iterate through an array. "Array cursor" is the technical term for the element of an array that is currently being read. Each() takes an array as its parameter, and returns the current key and value in that array before advancing the array cursor. List() is a function that does the opposite of array() - it takes an array, and converts it into individual variables. The second way to use foreach does allow you to extract keys, and looks like this:Īnother commonly used way to loop over arrays is using the list() and each() functions, like this: In this situation, the array keys are ignored completely, which usually makes most sense when they have been auto-generated (i.e. Here the array $array is looped through and its values are extracted into $val. The easiest way to use foreach looks like this: However, there is a quick and easy way to accomplish the same thing: a foreach loop, which itself has two versions. As a result, code like this should generally be avoided: That is, it can have its keys out of order or entirely missing. For example, an array may have keys 0, 1, 2, 5, 3, 6, 7. However, these numbers cannot be guaranteed to exist within the array in any given order, or even to exist at all - they are just key values themselves. Seems like it's not impossible.If you do not specify a key, as in the first example, PHP will just assign incrementing numbers starting with 0. ![]() Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto searchīy reading the posts below I wondered if it really is impossible to make an ArrayAccess implementation really behave like a true array ( by being multi level ) ![]()
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