php使用curl和preg_match_all [英] php using curl and preg_match_all

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问题描述

所以我想要做的是使用preg_match_all从下面的表中拉出数字。我试着玩几个正则表达式，但我还没有得到它。我想拉数字并打印。即。 

  //获取网站
 $ ch = curl_init 
 curl_setopt（$ ch，CURLOPT_URL，'http://site.org'）; 
 curl_setopt（$ ch，CURLOPT_RETURNTRANSFER，1）; 
 $ response = curl_exec（$ ch）; 
 
 //解析数据
 preg_match_all（'/ [0-9] +（？= [^ 0-9] +（N7：0< | N7：10< | N7： 20））/'，$ response，$ matches）; 
 
 //打印解析的数据
 print_r（$ matches [0]）;

任何帮助将是巨大的。

 < html>< head>< title> Monitor< / title>< / head> 
< body bgcolor =＃ffffff>< center> 
< h2>< font face =helvetica>以太网处理器< / font>< / h2> 
< h2>< i>数据表监视器< / i>< / h2> 
< hr width = 25％align = center> 
< meta HTTP-EQUIV =refreshCONTENT =15>< body bgcolor =＃ffffff>< center>< table border = 1>< tr> align = left>地址< / th>< th width = 50> 0< / th>< th width = 50> 1< th width = 50&第一宽度= 50×第三宽度= 50×5第三宽度= 50×5第三宽度= 50×5第三宽度= 50×5第三宽度=第一和第二输出信号的第一和第二输出信号分别是第一和第二输入信号的第一和第二输出信号。 
< td align = right> 1< / td> 
< td align = right> 1< / td> 
< td align = right> 1< / td> 
< td align = right> 99< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：10< / td> 
< td align = right> 0< / td> 
< td align = right> 7300< / td> 
< td align = right> 16400< / td> 
< td align = right> 3300< / td> 
< td align = right> 2200< / td> 
< td align = right> 6100< / td> 
< td align = right> 28000< / td> 
< td align = right> 18000< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：20< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：30< / td> 
< td align = right> 16993< / td> 
< td align = right> 29251< / td> 
< td align = right> 28516< / td> 
< td align = right> 25888< / td> 
< td align = right> 20079< / td> 
< td align = right> 2972​​8< / td> 
< td align = right> 18031< / td> 
< td align = right> 30062< / td> 
< td align = right> 25633< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：40< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：50< / td> 
< td align = right> 205< / td> 
< td align = right> 158< / td> 
< td align = right> 152< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 79< / td> 
< td align = right> 7< / td> 
< td align = right> 19< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：60< / td> 
< td align = right> 0< / td> 
< td align = right> 4000< / td> 
< td align = right> 18000< / td> 
< td align = right> 2500< / td> 
< td align = right> 1750< / td> 
< td align = right> 2000< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：70< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 14< / td> 
< td align = right> 0< / td> 
< td align = right> 2210< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：80< / td> 
< td align = right> 363< / td> 
< td align = right> 347< / td> 
< td align = right> 361< / td> 
< td align = right> 0< / td> 
< td align = right> 371< / td> 
< td align = right> 379< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< / tr>< tr>< td> N7：90< / td> 
< td align = right> 6< / td> 
< td align = right> 474< / td> 
< td align = right> 42< / td> 
< td align = right> 114< / td> 
< td align = right> 408< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 0< / td> 
< td align = right> 308< / td> 
< td align = right> 248< / td> 
< / tr>< / table>< / center>< hr width = 25％align = center>


解决方案

我认为正则表达式看起来像这个：



< td align = right>（\d +？）< / td> p>

但是，当你从XML / HTML结构中获取数据时，最好使用解析器：

  $ dd = new DOMDocument（）; 
 $ dd-> loadHTML（$ response）; 
 $ tds = $ dd-> getElementsByTagName（'td'）; 
 
 foreach（$ tds as $ td）{
 if（is_numeric（$ td-> nodeValue））
 echo $ td-> nodeValue。'< br / >'; 
}


So what I'm wanting to do is use preg_match_all to pull the number from the table below. I've tried playing around with a few regular expressions, but I'm not getting it yet. I would like to pull the numbers and print them. ie. 

//gets the site
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://site.org');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($ch); 

//parse the data
preg_match_all('/[0-9]+(?=[^0-9]+(N7:0<|N7:10<|N7:20))/', $response, $matches);

//prints the parsed data
print_r($matches[0]);

Any help would be great.

<html><head><title>Monitor</title></head>
<body bgcolor="#ffffff"><center>
<h2><font face="helvetica">Ethernet Processor</font></h2>
<h2><i>Data Table Monitor</i></h2>
<hr width=25% align=center>
<meta HTTP-EQUIV="refresh" CONTENT="15"><body bgcolor="#ffffff"><center><table border=1><tr><th align=left>Address</th><th width=50>0</th><th width=50>1</th><th width=50>2</th><th width=50>3</th><th width=50>4</th><th width=50>5</th><th width=50>6</th><th width=50>7</th><th width=50>8</th><th width=50>9</th></tr><tr><td>N7:0</td>
<td align=right>1</td>
<td align=right>1</td>
<td align=right>1</td>
<td align=right>99</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:10</td>
<td align=right>0</td>
<td align=right>7300</td>
<td align=right>16400</td>
<td align=right>3300</td>
<td align=right>2200</td>
<td align=right>6100</td>
<td align=right>28000</td>
<td align=right>18000</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:20</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:30</td>
<td align=right>16993</td>
<td align=right>29251</td>
<td align=right>28516</td>
<td align=right>25888</td>
<td align=right>20079</td>
<td align=right>29728</td>
<td align=right>18031</td>
<td align=right>30062</td>
<td align=right>25633</td>
<td align=right>0</td>
</tr><tr><td>N7:40</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:50</td>
<td align=right>205</td>
<td align=right>158</td>
<td align=right>152</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>79</td>
<td align=right>7</td>
<td align=right>19</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:60</td>
<td align=right>0</td>
<td align=right>4000</td>
<td align=right>18000</td>
<td align=right>2500</td>
<td align=right>1750</td>
<td align=right>2000</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:70</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>14</td>
<td align=right>0</td>
<td align=right>2210</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:80</td>
<td align=right>363</td>
<td align=right>347</td>
<td align=right>361</td>
<td align=right>0</td>
<td align=right>371</td>
<td align=right>379</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
</tr><tr><td>N7:90</td>
<td align=right>6</td>
<td align=right>474</td>
<td align=right>42</td>
<td align=right>114</td>
<td align=right>408</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>0</td>
<td align=right>308</td>
<td align=right>248</td>
</tr></table></center><hr width=25% align=center>

解决方案

I think the regex you're after looks something like this:

<td align=right>(\d+?)</td>

However when you're getting data from an XML/HTML structure you're better off using a parser:

$dd = new DOMDocument();                                                                                                                                                                                   
$dd->loadHTML($response);                                                                                                                                                                                      
$tds = $dd->getElementsByTagName('td');                                                                                                                                                                    

foreach($tds as $td) {                                                                                                                                                                                     
    if(is_numeric($td->nodeValue))                                                                                                                                                                         
        echo $td->nodeValue.'<br />';                                                                                                                                                                      
}

这篇关于php使用curl和preg_match_all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！

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