How to remove the last item from php array
3 ways to remove: 1. Use array_pop() to delete the last element, the syntax is "array_pop(array);". 2. To use array_splice(), just set the second parameter of the function to "-1", the syntax is "array_splice(array,-1)". 3. To use array_slice(), just set the second parameter of the function to 0 and the third parameter to "-1", the syntax is "array_slice(array,0,-1)".
The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer
Remove the last part of the php array Three methods for an element:
Method 1: Use the array_pop() function to delete the last element
array_pop() function to delete the array the last element in .
array_pop($array)
This function will change the original array; the return value is the last value of the array. If the array is empty or not an array, NULL will be returned.
<?php header('content-type:text/html;charset=utf-8'); $arr = array(1,2,3,4,5,6,7,8,9,10); echo "原数组："; var_dump($arr); array_pop($arr); echo "移除最后一项后："; var_dump($arr); ?>
Method 2. Use array_splice() function to delete the last element
array_splice() function deletes part of the elements of the array When , these deleted elements will be formed into a new array, and then the new array will be returned; therefore, the array_splice() function can be used to intercept array fragments.
array_splice(array1,start,length,array2)
| Parameters | Description |
|---|---|
| array1 | Required . Specifies an array. |
| start | Required. numerical value. Specifies the starting position of deleted elements.
0 = first element.
If the value is set to a positive number, removal begins at the offset specified by the value in the array. If the value is set to a negative number, removal begins at the offset specified by the value from the end of the array.
-2 means start from the second to last element of the array. |
| length | Optional. numerical value. Specifies the number of elements to be removed, which is also the length of the returned array.
If this value is set to a positive number, remove this number of elements. If this value is set to a negative number, all elements from start to length inverse of the end of the array are removed. If this value is not set, all elements from the position set by the start parameter to the end of the array are removed. |
| array2 | Optional. Specifies the array with the elements to be inserted into the original array. If there is only one element, it can be set to a string and does not need to be set to an array. |
#This function will change the original array and return the array containing the extracted elements.
Just set the second parameter start of the function to -1 to delete the last element
<?php
header("Content-type:text/html;charset=utf-8");
$arr = array(1,2,3,4,5,6,7,8,9,10);
echo "原数组：";
var_dump($arr);
echo "移除最后一项后：";
$result = array_splice($arr,-1);
var_dump($arr);
echo "被删除的数组元素：";
var_dump($result);
?>
Method 3. Use The array_slice() function deletes the last element
The array_slice() function is a function provided by PHP to intercept an array. It can extract a fragment from the array. The syntax is as follows:
array array_slice ( array $arr , int $start [, int $length = NULL [, bool $preserve_keys = false ]] )
Parameter description:
- arr represents the array to be intercepted.
- start indicates the starting position (subscript) of interception:
- If start is a positive number, interception will be performed from front to back.
- If start is a negative number, start from the position -start from the end of arr and intercept from back to front. For example -2 means start from the second to last element of the array.
- length is an optional parameter, indicating the intercepted length:
- If length is a positive number, it indicates the number of intercepted elements;
- If length If it is a negative number, then the intercepted fragment will end at the length position from the end of the array;
- If it is omitted, it will start from the start position and continue to the end of the array.
- preserve_keys is an optional parameter that specifies whether to retain the original key name. The default is false, that is, not retained; if set to true, the original key name will be retained.
Return value: Returns the selected part in the array.
Just set the second parameter to 0 and the third parameter to -1.
<?php
header("Content-type:text/html;charset=utf-8");
$arr = array(2,4,6,8,10);
echo "原数组：";
var_dump($arr);
echo "移除最后一项后：";
$result = array_slice($arr,0,-1);
var_dump($result);
?>
Recommended learning: "PHP Video Tutorial"
The above is the detailed content of How to remove the last item from php array. 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
1378
52
PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian
Dec 24, 2024 pm 04:42 PM
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
How To Set Up Visual Studio Code (VS Code) for PHP Development
Dec 20, 2024 am 11:31 AM
Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c
How do you parse and process HTML/XML in PHP?
Feb 07, 2025 am 11:57 AM
This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an
PHP Program to Count Vowels in a String
Feb 07, 2025 pm 12:12 PM
A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,
7 PHP Functions I Regret I Didn't Know Before
Nov 13, 2024 am 09:42 AM
If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op
Explain late static binding in PHP (static::).
Apr 03, 2025 am 12:04 AM
Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.
What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases?
Apr 03, 2025 am 12:03 AM
What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
