PHP数组键值怎么互换?
在PHP中可以使用“array_flip()”函数来将数组的键值互换,其语法是“array_flip(array);”,参数array表示需进行键和值对反转的数组。
PHP数组键值怎么互换?
在PHP中,可以使用array_flip()函数来将数组的键值互换。
array_flip()函数用于反转/交换数组中的键名和对应关联的键值。
语法:
array_flip(array);
array:必需参数。规定需进行键/值对反转的数组。
返回值:
如果反转成功,则返回反转后的数组。如果反转失败,则返回 NULL。
示例:
<?php $a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow"); $result=array_flip($a1); print_r($result); ?>
输出:
Array ( [red] => a [green] => b [blue] => c [yellow] => d )
更多相关知识,请访问 PHP中文网!!

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



In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

Working with database in CakePHP is very easy. We will understand the CRUD (Create, Read, Update, Delete) operations in this chapter.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Validator can be created by adding the following two lines in the controller.
