search
Homephp教程php手册PHP array_splice()接合数组用法示例

PHP array_splice()接合数组用法示例

Jun 13, 2016 am 09:35 AM
arrayphpspliceto usefunctionCanexistarrayusageofExample

   在PHP中接合数组,我们有现成的函数可以用,那就是array_splice()函数,它会删除数组中从offset开始到offset+length 结束的所有元素,并以数组的形式返回所删除的元素。array_splice()语法格式为:

  array array_splice ( array array , int offset[,length[,array replacement]])

  offset 为正值时,则接合将从距数组开头的offset 位置开始,offset 为负值时,接合将从距数组末尾的offset 位置开始。如果忽略可选的length 参数,则从offset 位置开始到数组结束之间的所有元素都将被删除。如果给出了length 且为正值,则接合将在距数组开头的offset + leng th 位置结束。相反,如果给出了length且为负值,则结合将在距数组开头的count(input_array)-length的位置结束。

  来看一个标准的接合数组的例子,PHP代码:

  1

  2$fruits = array("Apple", "Banana", "Orange", "Pear", "Grape", "Lemon", "Watermelon");

  3$subset = array_splice($fruits, 4);

  4print_r($fruits);

  5print_r($subset);

  6// 输出结果为:

  7// Array ( [0] => Apple [1] => Banana [2] => Orange [3] => Pear )

  8// Array ( [0] => Grape [1] => Lemon [2] => Watermelon )

  9?>

  我们还可以使用可选参数replacement来指定取代目标部分的数组。请看下面的例子:

  1

  2$fruits = array("Apple", "Banana", "Orange", "Pear", "Grape", "Lemon", "Watermelon");

  3$subset = array_splice($fruits, 2, -1, array("Green Apple", "Red Apple"));

  4print_r($fruits);

  5print_r($subset);

  6// 输出结果:

  7// Array ( [0] => Apple [1] => Banana [2] => Green Apple [3] => Red Apple [4] => Watermelon )

  8// Array ( [0] => Orange [1] => Pear [2] => Grape [3] => Lemon )

  9?>

Statement
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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor