How to parse titles of all links on a page?

Question

PHP

I have a parser that pulls specific information from the 1st page of a product.

<form action="" method="post">
  <input type="url" name="pase_url" placeholder="Parse URL">
  <button type="submit" name="parse" >Parse Link!</button>
</form>
<?php
// Parse function, to sanitize parsing data
function parse( $param_1, $param_2, $param_3 ){
  $html_tags_1 = strpos( $param_1, $param_2 );
  if( $html_tags_1 === false ){
    return 0;
  } 
  $html_tags_2 =  substr( $param_1, $html_tags_1 );
  return strip_tags( substr ($html_tags_2, 0, strpos ( $html_tags_2, $param_3 )));
}
// Parse data
if( isset($_POST['parse']) ){
  $parse_url = $_POST['pase_url'];
  $dom_data = file_get_contents( $parse_url );
  echo '<br>' . 'Title: ' . parse($dom_data, '<title>', '</title>');
}  
?>

Now you need to go up a level, to the sub-categories section, parse all links to products, and take their titles from them (I’ll figure out the rest myself).
Please tell me how to do this?
To be a little more specific, there is an array of links, you need to go into each of them, and pull out the necessary information.

Answer 1

loop + standard library for working with dom