php 如何在php中下载网页
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How to download a webpage in php
提问by Hugo
I was wondering how I could download a webpage in php for parsing?
我想知道如何在 php 中下载网页进行解析？
回答by DimitrisD
You can use something like this
你可以使用这样的东西
$homepage = file_get_contents('http://www.example.com/');
echo $homepage;
回答by Gordon
Since you will likely want to parse the page with DOM, you can load the page directly with:
由于您可能希望使用DOM解析页面，因此您可以直接使用以下命令加载页面：
$dom = new DOMDocument;
$dom->load('http://www.example.com');
when your PHP has allow_url_fopenenabled.
当您的 PHP启用了allow_url_fopen 时。
But basically, any function that supports HTTP stream wrapperscan be used to download a page.
但基本上，任何支持HTTP 流包装器的函数都可用于下载页面。
回答by RetroNoodle
Just to add another option because it is there, while not the best is just to use file. Its another option that I dont see anyone has listed here.
只是添加另一个选项，因为它在那里，而不是最好的只是使用文件。这是我没有看到任何人在此处列出的另一种选择。
$array = file("http://www.stackoverflow.com");
Its nice if you want it in an array of lines, whereas the already mentioned file_get_contents will put it in a string.
如果你想要它在一个行数组中它很好，而已经提到的 file_get_contents 将它放在一个字符串中。
Just another thing you can do.
只是你可以做的另一件事。
Then you can loop thru each line if this matches your goal to do so:
然后，如果这符合您的目标，您可以遍历每一行：
foreach($array as $line){
echo $line;
// do other stuff here
}
This comes in handy sometimes when certain APIs spit out plain text or html with a new entry on each line.
有时当某些 API 吐出纯文本或 html 时，这会派上用场，每行都有一个新条目。
回答by User123
You can use this code
您可以使用此代码
$url = 'your url';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec ($ch);
curl_close ($ch);
// you can do something with $data like explode(); or a preg match regex to get the exact information you need
//$data = strip_tags($data);
echo $data;
