Get data only from html table used preg_match_all in php

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暖寄归人 2021-01-03 16:07

I have a html table like this :



  

        
             
                  string...
            


        
      
      
      
        
          2条回答        

        
                    
            
            
                         
                
              
              
                
                   孤独总比滥情好
                                             
                
                
                (楼主)
            
              
              
                2021-01-03 16:20
              

            
            
                        
You absolutely do NOT want to parse HTML with Regex.

There are far too many variations, for one, and more importantly, regex isn't very good with the hierarchal nature of HTML.  It's best to use an XML parser or better-yet an HTML-specific parser.

Whenever I need to scrape HTML, I tend to use the Simple HTML DOM Parser library, which takes an HTML tree and parses it into a traversable PHP object, which you can query something like JQuery.


      

            
                 
                      data0
                  
                    
                     data1
                  
                    
                      data2
                  
                    
                      data3
                  
                    
                      data4
                  
           
            
                 
                      data00
                  
                    
                     data11
                  
                    
                      data22
                  
                    
                      data33
                  
                    
                      data44
                  
           
            
                 
                      data000
                  
                    
                     data111
                  
                    
                      data222
                  
                    
                      data333
                  
                    
                      data444
                  
           
      
    
EOS;

    $oHTML = str_get_html($sHtml);
    $oTRs = $oHTML->find('table tr');
    $aData = array();
    foreach($oTRs as $oTR) {
        $aRow = array();
        $oTDs = $oTR->find('td');

        foreach($oTDs as $oTD) {
            $aRow[] = trim($oTD->plaintext);
        }

        $aData[] = $aRow;
    }

    var_dump($aData);
?>

And the output:

array
  0 => 
    array
      0 => string 'data0' (length=5)
      1 => string 'data1' (length=5)
      2 => string 'data2' (length=5)
      3 => string 'data3' (length=5)
      4 => string 'data4' (length=5)
  1 => 
    array
      0 => string 'data00' (length=6)
      1 => string 'data11' (length=6)
      2 => string 'data22' (length=6)
      3 => string 'data33' (length=6)
      4 => string 'data44' (length=6)
  2 => 
    array
      0 => string 'data000' (length=7)
      1 => string 'data111' (length=7)
      2 => string 'data222' (length=7)
      3 => string 'data333' (length=7)
      4 => string 'data444' (length=7)

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string... 2条回答孤独总比滥情好 (楼主) 2021-01-03 16:20 You absolutely do NOT want to parse HTML with Regex. There are far too many variations, for one, and more importantly, regex isn't very good with the hierarchal nature of HTML. It's best to use an XML parser or better-yet an HTML-specific parser. Whenever I need to scrape HTML, I tend to use the Simple HTML DOM Parser library, which takes an HTML tree and parses it into a traversable PHP object, which you can query something like JQuery.
data0	data1	data2	data3	data4
data00	data11	data22	data33	data44
data000	data111	data222	data333	data444