这篇文章主要介绍了php中使用array_filter()函数过滤空数组的实现代码,这是浏览PHP手册时无意发意的一个有意思的array_filter()函数用法,需要的朋友可以参考下
今天在翻看手册查询array_filter()的使用细节时,看到了个小关键点:If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed. 如果没有给出回调函数,所有的等于 FALSE 的元素将会被移除掉,,这不正好可以用来过滤一些有空元素的数组吗?连忙写个例子测试一下想法:
复制代码 代码如下:
$entry = array(
0 => '蓝色夏威夷的博客',
1 => false,
2 => 1,
3 => null,
4 => '',
5 => 'http://www.jb51.net',
6 => '0',
7 => array(),
8 => 0
);
$validarr = array_filter($entry);
print_r($validarr);
//输出结果:
Array
(
[0] => 蓝色夏威夷的博客
[2] => 1
[5] =>
)
一些可以转化为布尔型FALSE的数组元素都被移除了,对我们想要得到一个有效的数组作了一个非常全面的过滤。

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

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

Notepad++7.3.1
Easy-to-use and free code editor

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver CS6
Visual web development tools