PHP中的正则表达式：如何为html中的表创建模式

Question

I am using latest PHP. I want to parse HTML page to get data.

HTML:

<table class="margin15" style="margin-left: 0pt; margin-right: 0pt;" width="100%" align="left" border="0" cellpadding="0" cellspacing="0">
TRs, TDs, Data
</table>

<table class="margin15" style="margin-left: 0pt; margin-right: 0pt;" width="100%" align="left" border="0" cellpadding="0" cellspacing="0">
TRs, TDs, Data
</table>

<table class="margin15" style="margin-left: 0pt; margin-right: 0pt;" width="100%" align="left" border="0" cellpadding="0" cellspacing="0">
TRs, TDs, Data
</table>

<table class="margin15" style="margin-left: 0pt; margin-right: 0pt;" width="100%" align="left" border="0" cellpadding="0" cellspacing="0">
TRs, TDs, Data
</table>

PHP Code:

<?php

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.test.com/mypage.html');  
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);


$pattern = '/<table class="margin15" style="margin-left: 0pt; margin-right: 0pt;" width="100%" align="left" border="1" cellpadding="0" cellspacing="0">[^~]</table>/';
preg_match_all($pattern, $result, $matches);
print_r($matches);

?>

I am not able to get all tables. When I use simple $pattern='/table/'; , it gives me exact result. How to create a pattern to get whole table at one array location?

Answer 1

使用regex解析HTML充其量是一件痛苦的事情，因为HTML不是常规的，我建议您使用Simple HTML DOM 。

Answer 2

You can't parse [X]HTML with regex , but you can try:

$pattern = '#<table(?:.*?)>(.*?)</table>#';

This won't work if there are nested tables.

Answer 3

Please have a look at this answer . It describes the usage of an HTML parser in PHP, which is what you want to do.

Answer 4

Or just use the DOM class php offers. I think it can do the same as simple html dom but much faster (don't' get me wrong, I really like Simple Html DOM, but it's slow for files with a few dozen lines)