Home Backend Development PHP Tutorial PHP difference operation function array_diff and array traversal

PHP difference operation function array_diff and array traversal

Jun 09, 2018 am 11:36 AM
php element associative array delete

This article mainly introduces the PHP difference operation function array_diff and array traversal. Interested friends can refer to it. I hope it will be helpful to everyone.

The example of this article describes the method of deleting elements based on the element value in PHP associative array, as follows:

<?php 
$array1 = array("a" => "green", "red", "blue", "red"); 
$array2 = array("b" => "green"); 
$result = array_diff($array1, $array2);
//这样就相当于删除$array1里的值为"green"的元素。 
print_r($result); 
?>
Copy after login

There is another method, which is more complicated than the above, but the effect is the same:

function removeArrayElement(&$ar,$val)
{
$tmp = array();
foreach($ar as $k => $arc)
{
  if($arc!=$val)
  {
  $tmp[$k]=$arc;
  }
}
$ar = $tmp;
unset($tmp);
}
Copy after login

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

php Unordered Tree Implementation Skills

php Unordered Tree Implementation Skills

php process control and mathematical operations

The above is the detailed content of PHP difference operation function array_diff and array traversal. 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 Article Tags

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 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

CakePHP Date and Time

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

CakePHP Project Configuration

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

CakePHP File upload

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

CakePHP Routing

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

Discuss CakePHP

CakePHP Quick Guide CakePHP Quick Guide Sep 10, 2024 pm 05:27 PM

CakePHP Quick Guide

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

How To Set Up Visual Studio Code (VS Code) for PHP Development

See all articles