Home Backend Development PHP Problem How to use php current function?

How to use php current function?

May 30, 2019 pm 02:57 PM

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?

#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)
Copy after login

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
?>
Copy after login

Output:

Bill
Steve
Steve
Bill
David
Mark
Mark
Bill
Steve
Array ( [1] => Steve [value] => Steve [0] => 1 [key] => 1 )
Copy after login

Example 2

Output the value of the current element in the array:

<?php
$people = array("Bill", "Steve", "Mark", "David");
echo current($people) . "<br>";
?>
Copy after login

Output:

Bill
Copy after login

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!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8 JIT (Just-In-Time) Compilation: How it improves performance. PHP 8 JIT (Just-In-Time) Compilation: How it improves performance. Mar 25, 2025 am 10:37 AM

PHP 8's JIT compilation enhances performance by compiling frequently executed code into machine code, benefiting applications with heavy computations and reducing execution times.

PHP Secure File Uploads: Preventing file-related vulnerabilities. PHP Secure File Uploads: Preventing file-related vulnerabilities. Mar 26, 2025 pm 04:18 PM

The article discusses securing PHP file uploads to prevent vulnerabilities like code injection. It focuses on file type validation, secure storage, and error handling to enhance application security.

OWASP Top 10 PHP: Describe and mitigate common vulnerabilities. OWASP Top 10 PHP: Describe and mitigate common vulnerabilities. Mar 26, 2025 pm 04:13 PM

The article discusses OWASP Top 10 vulnerabilities in PHP and mitigation strategies. Key issues include injection, broken authentication, and XSS, with recommended tools for monitoring and securing PHP applications.

PHP Authentication & Authorization: Secure implementation. PHP Authentication & Authorization: Secure implementation. Mar 25, 2025 pm 03:06 PM

The article discusses implementing robust authentication and authorization in PHP to prevent unauthorized access, detailing best practices and recommending security-enhancing tools.

PHP API Rate Limiting: Implementation strategies. PHP API Rate Limiting: Implementation strategies. Mar 26, 2025 pm 04:16 PM

The article discusses strategies for implementing API rate limiting in PHP, including algorithms like Token Bucket and Leaky Bucket, and using libraries like symfony/rate-limiter. It also covers monitoring, dynamically adjusting rate limits, and hand

PHP Encryption: Symmetric vs. asymmetric encryption. PHP Encryption: Symmetric vs. asymmetric encryption. Mar 25, 2025 pm 03:12 PM

The article discusses symmetric and asymmetric encryption in PHP, comparing their suitability, performance, and security differences. Symmetric encryption is faster and suited for bulk data, while asymmetric is used for secure key exchange.

What is the purpose of prepared statements in PHP? What is the purpose of prepared statements in PHP? Mar 20, 2025 pm 04:47 PM

Prepared statements in PHP enhance database security and efficiency by preventing SQL injection and improving query performance through compilation and reuse.Character count: 159

How do you retrieve data from a database using PHP? How do you retrieve data from a database using PHP? Mar 20, 2025 pm 04:57 PM

Article discusses retrieving data from databases using PHP, covering steps, security measures, optimization techniques, and common errors with solutions.Character count: 159

See all articles