How parse html in php?

I know we can use PHP DOM to parse HTML using PHP. I found a lot of questions here on Stack Overflow too. But I have a specific requirement. I have an HTML content like below

    Chapter 1


    This is chapter 1


    Chapter 2


    This is chapter 2


    Chapter 3


    This is chapter 3

I want to parse the above HTML and save the content into two different arrays like:

$heading and $content

$heading = array('Chapter 1','Chapter 2','Chapter 3');
$content = array('This is chapter 1','This is chapter 2','This is chapter 3');

I can achieve this simply using jQuery. But I am not sure, if that's the right way. It would be great if someone can point me to the right direction. Thanks in advance.

hatef

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asked Aug 21, 2013 at 4:55

6

I have used domdocument and domxpath to get the solution, you can find it at:

    Chapter 1


This is chapter 1


Chapter 2


This is chapter 2


Chapter 3


This is chapter 3
';
$dom->loadHTML($test);
$xpath = new DOMXpath($dom);
$heading=parseToArray($xpath,'Heading1-H');
$content=parseToArray($xpath,'Normal-H');
var_dump($heading);
echo "
";
var_dump($content);
echo "
";
function parseToArray($xpath,$class)
{
$xpathquery="//span[@class='".$class."']";
$elements = $xpath->query($xpathquery);
if (!is_null($elements)) {
$resultarray=array();
foreach ($elements as $element) {
$nodes = $element->childNodes;
foreach ($nodes as $node) {
$resultarray[] = $node->nodeValue;
}
}
return $resultarray;
}
}

Live result: http://saji89.codepad.org/2TyOAibZ

answered Aug 21, 2013 at 5:45

saji89saji89

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1

Try to look at PHP Simple HTML DOM Parser

It has brilliant syntax similar to jQuery so you can easily select any element you want by ID or class

// include/require the simple html dom parser file

$html_string = '
    

        Chapter 1
    
    

        This is chapter 1
    
    

        Chapter 2
    
    

        This is chapter 2
    
    

        Chapter 3
    
    

        This is chapter 3
    
';
$html = str_get_html($html_string);
foreach($html->find('span') as $element) {
    if ($element->class === 'Heading1-H') {
        $heading[] = $element->innertext;
    }else if($element->class === 'Normal-H') {
        $content[] = $element->innertext;
    }
}

answered Aug 21, 2013 at 4:58

4

Here's an alternative way to parse the html using DiDOM which offers significantly better performance in terms of speed and memory footprint.

composer require imangazaliev/didom

    Chapter 1


This is chapter 1


Chapter 2


This is chapter 2


Chapter 3


This is chapter 3

HTML;
$document = new Document($html);
// find chapter headings
$elements = $document->find('.Heading1-H');
$headings = [];
foreach ($elements as $element) {
$headings[] = $element->text();
}
// find chapter texts
$elements = $document->find('.Normal-H');
$chapters = [];
foreach ($elements as $element) {
$chapters[] = $element->text();
}
echo("Headings\n");
foreach ($headings as $heading) {
echo("- {$heading}\n");
}
echo("Chapter texts\n");
foreach ($chapters as $chapter) {
echo("- {$chapter}\n");
}

answered Dec 25, 2020 at 6:11

8ctopus8ctopus

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1

// Create DOM from URL or file

$html = file_get_html('http://www.google.com/');

// Find all images

foreach($html->find('img') as $element) 
   echo $element->src . '
';

// Find all links

foreach($html->find('a') as $element) 
   echo $element->href . '
';

Chen-Tsu Lin

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answered Mar 5, 2014 at 7:55

jfraberjfraber

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2

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