php simplexml_load_file [英] php simplexml_load_file

问题描述

我是 PHP 新手，这可能是一个愚蠢的问题，所以不要因为我不明白某些东西就投票给我...

I'm new to PHP and this may be a stupid question to ask, so don't vote me down just because I don't understand something...

php -r "print_r(simplexml_load_file('http://twitter.com/statuses/user_timeline/31139114.rss'));"

让我们以这个为例，通过运行这个命令，我得到(在屏幕上)XML 输出.

let's take this for an example, by running this command i get (on screen) XML output.

我的问题是，是否可以将这些数据保存在一个文件中，而不仅仅是屏幕，而是保存在一个文件中，然后读取该文件，并且与您制作的 simplexml_load_file() 完全相同

my question is it possible to save this data instead of just screen but in a file and then read that file and have exact same as if you've have made that simplexml_load_file()

推荐答案

您可以下载数据，使用类似 file_get_contents ;它会在单个 PHP 字符串中为您提供整个 XML.
例如:

You can download the data, using something like file_get_contents ; it'll get you the whole XML in a single PHP string.
For instance :

$xml = file_get_contents('http://twitter.com/statuses/user_timeline/31139114.rss');

$xml 现在包含 XML 字符串.

$xml now contains the XML string.

然后，您可以使用 file_put_contents 将该字符串写入文件.
例如:

Then, you can write that string to a file, using file_put_contents.
For instance :

file_put_contents('/home/squale/developpement/tests/temp/test.xml', $xml);

并且，从命令行检查文件:

And, to check the file, from the command-line :

$ cat test.xml                                                                                                                                                                                                   
<?xml version="1.0" encoding="UTF-8"?>                                                                                                                                                                           
<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">                                                                                                                                                     
  <channel>                                                                                                                                                                                                      
    <title>Twitter / eBayDailyDeals</title>                                                                                                                                                                      
    <link>http://twitter.com/eBayDailyDeals</link>                                                                                                                                                               
    <atom:link type="application/rss+xml" href="http://twitter.com/statuses/user_timeline/31139114.rss" rel="self"/>                                                                                             
    <description>Twitter updates from eBay Daily Deals / eBayDailyDeals.</description>                                                                                                                           
    <language>en-us</language>                                                                                                                                                                                   
    <ttl>40</ttl>                                                                                                                                                                                                
    <item> 
...
...

之后，您可以使用 simplexml_load_file 从该文件中读取.
例如:

After that, you can use simplexml_load_file to read from that file.
For instance :

$data = file_get_contents('/home/squale/developpement/tests/temp/test.xml');

并且 $data 现在包含您的 XML 字符串 ;-)

And $data now contains your XML string ;-)

考虑到你从远程服务器得到的 XML 是一个字符串，不需要序列化它；并且 file_put_contents 比 fopen+fwrite+fclose 更容易；-)

Considering the XML you get from the remote server is a string, no need to serialize it ; and file_put_contents is easier that fopen+fwrite+fclose ;-)

这篇关于php simplexml_load_file的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！