How to use php current function?
php current function is used to return the value of the current element in the array. Its syntax is current(array). The parameter array is required and refers to the array to be used. This function does not move the array internal pointer, to do this, use the next() and prev() functions.
#How to use php current function?
Definition and usage
current() function returns the value of the current element in the array.
Each array has an internal pointer pointing to its "current" element, which initially points to the first element inserted into the array.
Tip: This function does not move the internal pointer of the array. To do this, use the next() and prev() functions.
Related methods:
● end() - Point the internal pointer to the last element in the array and output
● next() - Point the internal pointer to the next element in the array and output
● prev() - Point the internal pointer to the previous element in the array and output
● reset() - Will The internal pointer points to the first element in the array and outputs
● each() - returns the key name and key value of the current element and moves the internal pointer forward
Syntax
current(array)
Parameters
array required. Specifies the array to use.
Description
The current() function returns the current element (unit) in the array.
Each array has an internal pointer pointing to its "current" element, initially pointing to the first element inserted into the array.
The current() function returns the value of the array element currently pointed to by the internal pointer, without moving the pointer. If the internal pointer points beyond the end of the cell list, current() returns FALSE.
Return value: Returns the value of the current element in the array. If the current element is empty or the current element has no value, it returns FALSE.
PHP Version: 4
Example 1
Demonstrates all relevant methods:
<?php $people = array("Bill", "Steve", "Mark", "David"); echo current($people) . "<br>"; // 当前元素是 Bill echo next($people) . "<br>"; // Bill 的下一个元素是 Steve echo current($people) . "<br>"; // 现在当前元素是 Steve echo prev($people) . "<br>"; // Steve 的上一个元素是 Bill echo end($people) . "<br>"; // 最后一个元素是 David echo prev($people) . "<br>"; // David 之前的元素是 Mark echo current($people) . "<br>"; // 目前的当前元素是 Mark echo reset($people) . "<br>"; // 把内部指针移动到数组的首个元素,即 Bill echo next($people) . "<br>"; // Bill 的下一个元素是 Steve print_r (each($people)); // 返回当前元素的键名和键值(目前是 Steve),并向前移动内部指针 ?>
Output:
Bill Steve Steve Bill David Mark Mark Bill Steve Array ( [1] => Steve [value] => Steve [0] => 1 [key] => 1 )
Example 2
Output the value of the current element in the array:
<?php $people = array("Bill", "Steve", "Mark", "David"); echo current($people) . "<br>"; ?>
Output:
Bill
The above is the detailed content of How to use php current function?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

This article explores efficient PHP array deduplication. It compares built-in functions like array_unique() with custom hashmap approaches, highlighting performance trade-offs based on array size and data type. The optimal method depends on profili

This article explores PHP array deduplication using key uniqueness. While not a direct duplicate removal method, leveraging key uniqueness allows for creating a new array with unique values by mapping values to keys, overwriting duplicates. This ap

This article analyzes PHP array deduplication, highlighting performance bottlenecks of naive approaches (O(n²)). It explores efficient alternatives using array_unique() with custom functions, SplObjectStorage, and HashSet implementations, achieving

This article details implementing message queues in PHP using RabbitMQ and Redis. It compares their architectures (AMQP vs. in-memory), features, and reliability mechanisms (confirmations, transactions, persistence). Best practices for design, error

This article examines current PHP coding standards and best practices, focusing on PSR recommendations (PSR-1, PSR-2, PSR-4, PSR-12). It emphasizes improving code readability and maintainability through consistent styling, meaningful naming, and eff

This article details installing and troubleshooting PHP extensions, focusing on PECL. It covers installation steps (finding, downloading/compiling, enabling, restarting the server), troubleshooting techniques (checking logs, verifying installation,

This article explores optimizing PHP array deduplication for large datasets. It examines techniques like array_unique(), array_flip(), SplObjectStorage, and pre-sorting, comparing their efficiency. For massive datasets, it suggests chunking, datab

This article explains PHP's Reflection API, enabling runtime inspection and manipulation of classes, methods, and properties. It details common use cases (documentation generation, ORMs, dependency injection) and cautions against performance overhea
