Generate pure text using php

Question

I\'m using a service that I end up with a generated string. Strings are usually like:

Hello   Mr   John Doe, you are now registered \\t.
Hello          


        

Answer 1

If I understood your case correctly, you basically want to convert from HTML to plain text.

Depending on the complexity of your input and the robustness and accuracy needed, you have a couple of options:

• Use strip_tags() to remove HTML tags, mb_convert_encoding() with HTML-ENTITIES as source encoding to decode entities and either strtr() or preg_replace() to make any additional replacement:

  $html = "
  Hello   Mr   John Doe, you are now registered.
      Hello   Mr   John Doe, your phone number is   555-555-555  
      Test: €/é
  ";
  
  $plain_text = $html;
  $plain_text = strip_tags($plain_text);
  $plain_text = mb_convert_encoding($plain_text, 'UTF-8', 'HTML-ENTITIES');
  $plain_text = strtr($plain_text, [
      "\t" => ' ',
      "\r" => ' ',
      "\n" => ' ',
  ]);
  $plain_text = preg_replace('/\s+/u', ' ', $plain_text);
  
  var_dump($html, $plain_text);
  

• Use a proper DOM parser, plus maybe preg_replace() for further tweaking:

  $html = "
  Hello   Mr   John Doe, you are now registered.
      Hello   Mr   John Doe, your phone number is   555-555-555  
      Test: €/é
  ";
  
  $dom = new DOMDocument();
  libxml_use_internal_errors(true);
  $dom->loadHTML($html);
  libxml_use_internal_errors(false);
  $xpath = new DOMXPath($dom);
  
  $plain_text = '';
  foreach ($xpath->query('//text()') as $textNode) {
      $plain_text .= $textNode->nodeValue;
  }
  $plain_text = preg_replace('/\s+/u', ' ', $plain_text);
  
  var_dump($html, $plain_text);
  

Both solutions should print something like this:

string(169) "
Hello   Mr   John Doe, you are now registered.
    Hello   Mr   John Doe, your phone number is   555-555-555  
    Test: €/é
"
string(107) "Hello Mr John Doe, you are now registered. Hello Mr John Doe, your phone number is 555-555-555 Test: €/é"