How to parse HTML in Ruby?

How to parse HTML file in PHP ?

Last Updated : 28 Mar, 2022

In this article, we will learn to parse HTML in PHP.

What is parsing?

Generally parsing is converting one data type to another. It means how we can convert various data types to HTML. For example: Converting string to HTML.

Why do we need parsing?

To add the dynamic data (HTML content) at a certain point in PHP code, we need parsing. For example: For adding the data (info) in the form of HTML, we need to make that dynamic template in string and then convert it to HTML.

How should we do parsing?

We should use loadHTML() function for parsing.

Syntax:

loadHTML(string $source,int $options=0)

Parameters:

$source: This variable is the container of the HTML code which you want to parse,
$options: You may use the options parameter to specify additional Libxml parameters.

Return value: It returns true on success or false on failure.

Example 1:

PHP

<?php
  $doc = new DOMDocument();
  $doc->loadHTML("<html><body><h1>Parsing Html in PHP</h1></body></html>");
  echo $doc->saveHTML();
?>

Output:

Parsing Html in PHP

Example 2:

PHP

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">  
    
</head>
<body> 
<?php
    $name=
    $res = '
    <table id="tablepress-3" style="width:100%">
      <tr>
        <th>Company</th>
        <th>Contact</th>
        <th>Country</th>
      </tr>
      <tr>
        <td>Alfreds Futterkiste</td>
        <td>Maria Anders</td>
        <td>Germany</td>
      </tr>
      <tr>
        <td>Centro commercial Moctezuma</td>
        <td>Francisco Chang</td>
        <td>Mexico</td>
      </tr>
    </table>
    ';
    $dom = new DomDocument();
    @ $dom->loadHTML($res);
    //DOMElement
    $table = $dom->getElementById('tablepress-3'); 
    //DOMNodeList
    $child_elements = $table->getElementsByTagName('tr'); 
    $row_count = $child_elements->length ;

    echo "No. of rows in the table is " . $row_count;
    ?>
</body>
</html>

Output:

No of rows in the table is 3

How to parse HTML in Ruby?

M

mahalenachiket77

Improve

Article Tags :

Similar Reads

How to parse local HTML file in Python?

Prerequisites: Beautifulsoup Parsing means dividing a file or input into pieces of information/data that can be stored for our personal use in the future. Sometimes, we need data from an existing file stored on our computers, parsing technique can be used in such cases. The parsing includes multiple

How to parse a CSV File in PHP ?

In this article, we learn to parse a CSV file using PHP code, along with understanding its basic implementation through examples. Â Approach: The following approach will be utilized to parse the CSV File using PHP, which is described below: Step 1. Add data to an Excel file. The following example is

How to parse a JSON File in PHP?

We will explore how to parse a JSON file and display its data using PHP. PHP is a server-side scripting language commonly used to process and manipulate data. JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for both humans and machines to read and write. It st

How to parse HTML in Ruby?

We have many languages which are used to parse the html files. We have Python programming languages. In Python, we can parse the html files using the panda's library and the library which is beautiful soup. The Beautiful Soup library is mainly used for web scraping. Similarly, we can parse the HTML

How to embed PHP code in an HTML page ?

PHP is the abbreviation of Hypertext Preprocessor and earlier it was abbreviated as Personal Home Page. We can use PHP in HTML code by simply adding a PHP tag without doing any extra work. Example 1: First open the file in any editor and then write HTML code according to requirement. If we have to a

How to use PHP in HTML ?

In this article, we will use PHP in HTML. There are various methods to integrate PHP and HTML, some of them are discussed below. You can add PHP tags to your HTML Page. You simply need to enclose the PHP code with the PHP starts tag <?php and the PHP end tag ?>. The code wrapped between these

How to upload a file in PHP ?

In this article, we will learn how to upload a file using PHP. Let us first understand some basic configurations. Approach: In your "php.ini" file, search for the "file_uploads" parameter and set it to "On" as mentioned below. file_uploads = On In the "index.html" file, the enctype must be multipart

How to write Into a File in PHP ?

In this article, we are going to discuss how to write into a text file using the PHP built-in fwrite() function. The fwrite() function is used to write into the given file. It stops at the end of the file or when it reaches the specified length passed as a parameter, whichever comes first. The file

How to define the document's body in HTML5 ?

The document's body in HTML5 is defined by the <body> tag which is placed with in the <html> tags and just after the <head> tag.The body tag can include: headings tags : <h1>, <h2>, <h3> and so on.paragraph tag: <p>line break tag: <br>horizontal rule t

How to parse and process HTML/XML using PHP ?

In this article, we will learn how to process XML using PHP. We have already learnt the basics of XML and their differences with respect to HTML. Different elements of XML can be learnt from XML Elements to understand the working of the following programs. The simplexml_load_string() function is use