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PHP数组相关函数汇总_PHP

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May 31, 2016 am 11:45 AM

phparrayrelated functions

本文总结了PHP数组相关的函数。分享给大家供大家参考。具体如下：

这里包括函数名和用法说明，没有详细的代码范例。感兴趣的朋友可以查阅本站相关的函数用法。

数组的相关处理函数

current(数组名称) 输出数组中一个字符串的值,从第一个起.
key(数组名称) 输出数组中一个下标,从第一个起.
next(数组名称) 控制数组指针向后移动.
prev(数组名称) 控制数组指针向前移动.
end(数组名称) 控制数组指针移向最后一位.
reset(数组名称) 控制数组指针移向第一位.
array_change_key_case(1.目标数组 2.CASE_UPPER大写或 CASE_LOWER小写) 将数组下标全部改为大写或小写.
array_chunk(1.目标数组 2.分解个数 3.输出布尔型的真或假) 将一个数组分解成多个小数组.
array_count_values(数组名称) 用来计算数组中各值出现的次数.
array_fill(1.下标从几开始 2.输出多少个 3.他们的值是什么) 用来做初始化数组.
array_filter(1.目标数组 2.使用者定义的函数) 过滤函数,自定义以什么标准为真,以什么标准为假,此函数可以自动过滤掉假的字符串.
array_flip(目标数组) 将下标变值,值变下标.
array_sum(目标数组) 计算目标数组中所有元素值的总和.
array_unique(目标数组) 去除目标数组中重复的值.
array_values(目标数组) 将目标数组中所有下标都去掉,重新从"0"开始计算此函数中值的下标.
array_keys(目标数组) 输出目标数组中的所有下标.
in_array(1.要找的东西 2.目标数组 3.是否严格按照数据类型查找,是就输true) 查找目标数组中有无查找的数据.
array_search(1.要找的东西 2.目标数组 3.是否严格查找) 查找目标数组中有无查找的数据,有则输出此数据的下标.
array_key_exists(1.要找的下标 2.目标数组) 查找目标数组中有无查找的下标,有则输出true,无则输出false.
extract(目标数组) 将数组转换成变量.
compact(要转换成数组的变量下标) 将多个变量转换成数组.

数组与栈 (先进后出)

array_push(1.目标数组 2.压入栈的值) 压入栈函数.
array_pop(目标数组) 弹出栈函数.

数组与队 (先进先出)

array_unshift(1.目标数组 2.压入对的值) 压入对函数.
array_shift(1目标数组) 弹出对函数.

忽略键名的数组排序:

sort(目标数组) 从小到大的排序.
rsort(目标数组) 从大到小的排序.
保留键名的数组排序:
asort(目标数组) 保留原下标,值从小到大的排序.
arsort(目标数组) 保留原下标,值从大到小的排序.

自然排序法排序:

natsort(目标数组) 保留原下标,值从大到小的排序,不区分大小写.
natcasesort(目标数组) 保留原下标,值从小到大的排序,不区分大小写.
array_merge(1.目标数组 2.目标数组......) 合并多个数组.
array_diff(1.被比数组 2.比数组 3.比数组......) 求数组的差积.
array_intersect(1.被比数组 2.比数组 3.比数组......) 求数组的交积.

希望本文所述对大家的php程序设计有所帮助。

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