January 2021
Intermediate to advanced
505 pages
9h 45m
Chinese
Content preview from PHP编程：第4版
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析取多个值
｜
135
在数组中删除和插入元素
array_splice()
函数可以在数组中删除或插入元素，并且可以用被删除的元素创建另一
个数组 ：
$removed = array_splice(
array
,
start
[,
length
[,
replacement
] ]);
看一下
array_splice()
函数在下面这个数组中的使用 ：
$subjects = array("physics", "chem", "math", "bio", "cs", "drama", "classics");
可以告诉
array_splice()
函数从位置
2
开始删除
3
个元素，这样可以删除
math
、
bio
和
cs
元素。
$removed = array_splice($subjects, 2, 3);
// $removed
是
array("math", "bio", "cs")
// $subjects
是
array("physics", "chem", "drama", "classics")
如果省略
length
参数，
array_splice()
将删除到数组末尾 ：
$removed = array_splice($subjects, 2);
// $removed
是
array("math", "bio", "cs", "drama", "classics")
// $subjects
是
array("physics", "chem")
如果只是简单地删除原数组中的元素，而不关心它们的值，则不需要将 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.