regex - get all attributes of an element

Question

I have a string that contains some html entities

<listing name="name goes there" phone="321321" >Text description</listing>
<anytag name="another name" phone="any phone" attr1="value 1" attr2="value 2">any can be written&nbsp; where &copy;MyRight</anytag>
<anytag name="another name line 2" phone="65851566" attr1="value &euml;" attr2="value 2">any can be written&nbsp; where &reg;MyRight&euml;ous</anytag>

I want to get all the attributes of these elements in a single regex for PHP,

If I try HtmlDom it gives me error of undefined tags and if I use SimpleXml it denies to parse html entities.

So I though to try RegExp but could not find solution to that.

Solutions other than RegExp also welcome.

Consider these as independent elements alternately you can put any wrapper around each element — Bhupinder Singh, Mar 14 '13 at 08:31
I would like to point out http://stackoverflow.com/a/1732454/1587973 — WouterH, Mar 14 '13 at 08:47

anubhava · Accepted Answer · 2013-03-14T08:42:33.987

You can use following DOM parser based code to list all attributes of a given tag name:

$str = <<<EOF
<listing name="name goes there" phone="321321" phone="any phone" attr1="value 1" attr2="value 2">Text description</listing>
<anytag name="another name" phone="any phone" attr1="value 1" attr2="value 2">any can be written&nbsp; where &copy;MyRight</anytag>
<anytag name="another name line 2" phone="65851566" attr1="value &euml;" attr2="value 2">any can be written&nbsp; where &reg;MyRight&euml;ous</anytag>
EOF;
$dom = new DOMDocument();
libxml_use_internal_errors(true);
$dom->loadHTML($str);

$nodeList = $dom->getElementsByTagName('anytag');
for($i=0; $i < $nodeList->length; $i++) {
    $node = $nodeList->item($i);
    if ($node->hasAttributes())
       echo $node->nodeName . " =>\n";
       foreach ($node->attributes as $attr) {
          $name = $attr->nodeName;
          $value = $attr->nodeValue;
          echo "Attribute '$name'='$value'\n";
       }
}

Live Demo: http://ideone.com/k8SLhr

score -1 · Answer 2 · answered Mar 14 '13 at 08:42

how about this:

<?php
  $str = 'your string here';
  $lines = explode("\n", $str);

  foreach ($lines as $line){
      preg_match_all("@\s+(?<attr_name>)\w+\=\"(?<attr_value>[^\"]+)\"@msi", $line, $results);

      echo "<pre>";
      print_r($results);
      echo "</pre>";
  }

?>

regex - get all attributes of an element

2 Answers2

Live Demo: http://ideone.com/k8SLhr