SAX parser has used to parse the xml file and better for memory management than sample xml parser and DOM. It does not keep any data in memory so it can be used for very large files. Following example will show how to get data from xml by using SAX API.

SAX.xml

XML should be as follows −

<?xml version = "1.0" encoding = "utf-8"?>

<tutors>

   <course>

      <name>Android</name>

      <country>India</country>

      <email>contact@tecklearn.com</email>

      <phone>123456789</phone>

   </course>

  

   <course>

      <name>Java</name>

      <country>India</country>

      <email>contact@tecklearn.com</email>

      <phone>123456789</phone>

   </course>

  

   <course>

      <name>HTML</name>

      <country>India</country>

      <email>contact@tecklearn.com</email>

      <phone>123456789</phone>

   </course>

</tutors>

SAX.php

Php file should as follows −

<?php

   //Reading XML using the SAX(Simple API for XML) parser

  

   $tutors   = array();

   $elements   = null;

  

   // Called to this function when tags are opened

   function startElements($parser, $name, $attrs) {

      global $tutors, $elements;

     

      if(!empty($name)) {

         if ($name == 'COURSE') {

            // creating an array to store information

            $tutors []= array();

         }

         $elements = $name;

      }

   }

  

   // Called to this function when tags are closed

   function endElements($parser, $name) {

      global $elements;

     

      if(!empty($name)) {

         $elements = null;

      }

   }

  

   // Called on the text between the start and end of the tags

   function characterData($parser, $data) {

      global $tutors, $elements;

     

      if(!empty($data)) {

         if ($elements == 'NAME' || $elements == 'COUNTRY' ||  $elements == 'EMAIL' ||  $elements == 'PHONE') {

            $tutors[count($tutors)-1][$elements] = trim($data);

         }

      }

   }

  

   // Creates a new XML parser and returns a resource handle referencing it to be used by the other XML functions.

   $parser = xml_parser_create();

  

   xml_set_element_handler($parser, "startElements", "endElements");

   xml_set_character_data_handler($parser, "characterData");

  

   // open xml file

   if (!($handle = fopen('sax.xml', "r"))) {

      die("could not open XML input");

   }

  

   while($data = fread($handle, 4096)) // read xml file {

      xml_parse($parser, $data);  // start parsing an xml document

   }

  

   xml_parser_free($parser); // deletes the parser

   $i = 1;

  

   foreach($tutors as $course) {

      echo "course No - ".$i.'<br/>';

      echo "course Name - ".$course['NAME'].'<br/>';

      echo "Country - ".$course['COUNTRY'].'<br/>';

      echo "Email - ".$course['EMAIL'].'<br/>';

      echo "Phone - ".$course['PHONE'].'<hr/>';

      $i++;

   }

?>

PHP – DOM Parser Example

A HTML Dom parser written in PHP5.X versions. Dom Parser is very good at dealing with XML as well as HTML. Dom parser travels based on tree based and before access the data, it will load the data into dom object and it will update the data to the web browser. Below Example shows how to get access to the HTML data in web browser.

<?php

   $html = '

      <head>

         <title>Tecklearn</title>

      </head>

  

      <body>

         <h2>Course details</h2>

     

         <table border = "0">

            <tbody>

               <tr>

                  <td>Android</td>

                  <td>Gopal</td>

                  <td>Sairam</td>

               </tr>

        

               <tr>

                  <td>Hadoop</td>

                  <td>Gopal</td>

                  <td>Satish</td>

               </tr>

         

               <tr>

                  <td>HTML</td>

                  <td>Gopal</td>

                  <td>Raju</td>

               </tr>

        

               <tr>

                  <td>Web technologies</td>

                  <td>Gopal</td>

                  <td>Javed</td>

               </tr>

        

               <tr>

                  <td>Graphic</td>

                  <td>Gopal</td>

                  <td>Satish</td>

               </tr>

        

               <tr>

                  <td>Writer</td>

                  <td>Kiran</td>

                  <td>Amith</td>

               </tr>

        

               <tr>

                  <td>Writer</td>

                  <td>Kiran</td>

                  <td>Vineeth</td>

               </tr>

            </tbody>

         </table>

      </body>

   </html>

   ';

   /*** a new dom object ***/

   $dom = new domDocument;

  

   /*** load the html into the object ***/

   $dom->loadHTML($html);

  

   /*** discard white space ***/

   $dom->preserveWhiteSpace = false;

  

   /*** the table by its tag name ***/

   $tables = $dom->getElementsByTagName('table');

  

   /*** get all rows from the table ***/

   $rows = $tables->item(0)->getElementsByTagName('tr');

  

   /*** loop over the table rows ***/

   foreach ($rows as $row) {

      /*** get each column by tag name ***/

      $cols = $row->getElementsByTagName('td');

     

      /*** echo the values ***/

      echo 'Designation: '.$cols->item(0)->nodeValue.'<br />';

      echo 'Manager: '.$cols->item(1)->nodeValue.'<br />';

      echo 'Team: '.$cols->item(2)->nodeValue;

      echo '<hr />';

   }

?>

It will produce the following result −

So, this brings us to the end of blog. This Tecklearn ‘Parsing in PHP’ blog helps you with commonly asked questions if you are looking out for a job in PHP Programming. If you wish to learn Java and build a career Java Programming domain, then check out our interactive, Java and JEE Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

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