Which of the following are iterator functions in php?
The Iterator interface(PHP 5, PHP 7, PHP 8) Show IntroductionInterface for external iterators or objects that can be iterated themselves internally. Interface synopsisPredefined iteratorsPHP already provides a number of iterators for many day to day tasks. See SPL iterators for a list. ExamplesExample #1 Basic usage This example demonstrates in which order methods are called when using foreach with an iterator.
__construct() { The above example will output something similar to: string(18) "myIterator::rewind" string(17) "myIterator::valid" string(19) "myIterator::current" string(15) "myIterator::key" int(0) string(12) "firstelement" string(16) "myIterator::next" string(17) "myIterator::valid" string(19) "myIterator::current" string(15) "myIterator::key" int(1) string(13) "secondelement" string(16) "myIterator::next" string(17) "myIterator::valid" string(19) "myIterator::current" string(15) "myIterator::key" int(2) string(11) "lastelement" string(16) "myIterator::next" string(17) "myIterator::valid" Table of Contents
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$it->valid()) RocketInABog at techno-monks dot net ¶ 13 years ago
__construct( $givenArray ) { fetidfrog at gmail dot com ¶ 10 years ago
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current() {
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rewind() { Daniel Lo Nigro ¶ 9 years ago
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__construct( $givenArray ) { Which of the following are iterator functions?Types of Iterators :. Input Iterators.. Output Iterators.. Forward Iterator.. Bidirectional Iterators.. Random-Access Iterators.. Is an object iterable PHP?PHP allows you to create iterable objects. These can be used within loops instead of scalar arrays. Iterables are commonly used as object collections.
What is iterable return type?Iterable can also be used as a return type to indicate a function will return an iterable value. If the returned value is not an array or instance of Traversable, a TypeError will be thrown. Example #3 Iterable return type example. function bar(): iterable {
How important is the PHP iterator in an application?Iterators encourage you to process data iteratively, instead of buffering it in memory. While it is possible to do this without iterators, the abstractions they provide hide the implementation which makes them really easy to use.
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