PHP数组函数札记
PHP数组函数笔记
array_change_key_case -- 返回字符串键名全为小写或大写的数组
array_chunk -- 将一个数组分割成多个
array_combine -- 创建一个数组，用一个数组的值作为其键名，另一个数组的值作为其值
array_count_values -- 统计数组中所有的值出现的次数
array_diff_assoc -- 带索引检查计算数组的差集
array_diff_key -- 使用键名比较计算数组的差集
array_diff_uassoc -- 用用户提供的回调函数做索引检查来计算数组的差集
array_diff_ukey -- 用回调函数对键名比较计算数组的差集
array_diff -- 计算数组的差集
array_fill -- 用给定的值填充数组
array_filter -- 用回调函数过滤数组中的单元
array_flip -- 交换数组中的键和值
array_intersect_assoc -- 带索引检查计算数组的交集
array_intersect_key -- 使用键名比较计算数组的交集
array_intersect_uassoc -- 带索引检查计算数组的交集，用回调函数比较索引
array_intersect_ukey -- 用回调函数比较键名来计算数组的交集
array_intersect -- 计算数组的交集
array_key_exists -- 检查给定的键名或索引是否存在于数组中
array_keys -- 返回数组中所有的键名
array_map -- 将回调函数作用到给定数组的单元上
array_merge_recursive -- 递归地合并一个或多个数组
array_merge -- 合并一个或多个数组
array_multisort -- 对多个数组或多维数组进行排序
array_pad -- 用值将数组填补到指定长度
array_pop -- 将数组最后一个单元弹出（出栈）
array_product -- 计算数组中所有值的乘积
array_push -- 将一个或多个单元压入数组的末尾（入栈）
array_rand -- 从数组中随机取出一个或多个单元
array_reduce -- 用回调函数迭代地将数组简化为单一的值
array_reverse -- 返回一个单元顺序相反的数组
array_search -- 在数组中搜索给定的值，如果成功则返回相应的键名
array_shift -- 将数组开头的单元移出数组
array_slice -- 从数组中取出一段
array_splice -- 把数组中的一部分去掉并用其它值取代
array_sum -- 计算数组中所有值的和
array_udiff_assoc -- 带索引检查计算数组的差集，用回调函数比较数据
array_udiff_uassoc -- 带索引检查计算数组的差集，用回调函数比较数据和索引
array_udiff -- 用回调函数比较数据来计算数组的差集
array_uintersect_assoc -- 带索引检查计算数组的交集，用回调函数比较数据
array_uintersect_uassoc -- 带索引检查计算数组的交集，用回调函数比较数据和索引
array_uintersect -- 计算数组的交集，用回调函数比较数据
array_unique -- 移除数组中重复的值
array_unshift -- 在数组开头插入一个或多个单元
array_values -- 返回数组中所有的值
array_walk_recursive -- 对数组中的每个成员递归地应用用户函数
array_walk -- 对数组中的每个成员应用用户函数
array -- 新建一个数组
arsort -- 对数组进行逆向排序并保持索引关系
asort -- 对数组进行排序并保持索引关系
compact -- 建立一个数组，包括变量名和它们的值
count -- 计算数组中的单元数目或对象中的属性个数
current -- 返回数组中的当前单元
each -- 返回数组中当前的键／值对并将数组指针向前移动一步
end -- 将数组的内部指针指向最后一个单元
extract -- 从数组中将变量导入到当前的符号表
in_array -- 检查数组中是否存在某个值
key -- 从关联数组中取得键名
krsort -- 对数组按照键名逆向排序
ksort -- 对数组按照键名排序
list -- 把数组中的值赋给一些变量
natcasesort -- 用“自然排序”算法对数组进行不区分大小写字母的排序
natsort -- 用“自然排序”算法对数组排序
next -- 将数组中的内部指针向前移动一位
pos -- current() 的别名
prev -- 将数组的内部指针倒回一位
range -- 建立一个包含指定范围单元的数组
reset -- 将数组的内部指针指向第一个单元
rsort -- 对数组逆向排序
shuffle -- 将数组打乱
sizeof -- count() 的别名
sort -- 对数组排序
uasort -- 使用用户自定义的比较函数对数组中的值进行排序并保持索引关联
uksort -- 使用用户自定义的比较函数对数组中的键名进行排序
usort -- 使用用户自定义的比较函数对数组中的值进行排序
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
Sort array using Array.Sort function in C#
Nov 18, 2023 am 10:37 AM
Title: Example of using the Array.Sort function to sort an array in C# Text: In C#, array is a commonly used data structure, and it is often necessary to sort the array. C# provides the Array class, which has the Sort method to conveniently sort arrays. This article will demonstrate how to use the Array.Sort function in C# to sort an array and provide specific code examples. First, we need to understand the basic usage of the Array.Sort function. Array.So
Replace svn diff with vimdiff: a tool for comparing code
Jan 09, 2024 pm 07:54 PM
Under Linux, it is very difficult to directly use the svndiff command to view code modifications, so I searched for a better solution on the Internet, which is to use vimdiff as a code viewing tool for svndiff, especially for those who are accustomed to using vim. It is very convenient. When using the svndiff command to compare the modifications of a certain file, for example, if you execute the following command: $svndiff-r4420ngx_http_limit_req_module.c, the following command will actually be sent to the default diff program: -u-Lngx_http_limit_req_module.c(revision4420)-Lngx_
Simple and clear method to use PHP array_merge_recursive() function
Jun 27, 2023 pm 01:48 PM
When programming in PHP, we often need to merge arrays. PHP provides the array_merge() function to complete array merging, but when the same key exists in the array, this function will overwrite the original value. In order to solve this problem, PHP also provides an array_merge_recursive() function in the language, which can merge arrays and retain the values of the same keys, making the program design more flexible. array_merge
How to use the array_combine function in PHP to combine two arrays into an associative array
Jun 26, 2023 pm 01:41 PM
In PHP, there are many powerful array functions that can make array operations more convenient and faster. When we need to combine two arrays into an associative array, we can use PHP's array_combine function to achieve this operation. This function is actually used to combine the keys of one array as the values of another array into a new associative array. Next, we will explain how to use the array_combine function in PHP to combine two arrays into an associative array. Learn about array_comb
Detailed explanation of PHP array_fill() function usage
Jun 27, 2023 am 08:42 AM
In PHP programming, array is a very important data structure that can handle large amounts of data easily. PHP provides many array-related functions, array_fill() is one of them. This article will introduce in detail the usage of the array_fill() function, as well as some tips in practical applications. 1. Overview of the array_fill() function The function of the array_fill() function is to create an array of a specified length and composed of the same values. Specifically, the syntax of this function is
How to use the Array module in Python
May 01, 2023 am 09:13 AM
The array module in Python is a predefined array, so it takes up much less space in memory than a standard list, and can also perform fast element-level operations such as adding, deleting, indexing, and slicing. In addition, all elements in the array are of the same type, so you can use the efficient numerical operation functions provided by the array, such as calculating the average, maximum, and minimum values. In addition, the array module also supports writing and reading array objects directly into binary files, which makes it more efficient when processing large amounts of numerical data. Therefore, if you need to process a large amount of homogeneous data, you may consider using Python's array module to optimize the execution efficiency of your code. To use the array module, you first need to
What are the common causes of ArrayStoreException in Java?
Jun 25, 2023 am 09:48 AM
In Java programming, array is an important data structure. Arrays can store multiple values in a single variable, and more importantly each value can be accessed using an index. But while working with arrays, some exceptions may occur, one of them is ArrayStoreException. This article will discuss common causes of ArrayStoreException exceptions. 1. Type mismatch The element type must be specified when the array is created. When we try to store incompatible data types into an array, it throws
Introduction to how to use the PHP array_change_key_case() function
Jun 27, 2023 am 10:43 AM
In PHP programming, array is a frequently used data type. There are also quite a few array operation functions, including the array_change_key_case() function. This function can convert the case of key names in the array to facilitate our data processing. This article will introduce how to use the array_change_key_case() function in PHP. 1. Function syntax and parameters array_change_ke
