How to get word after user input in textarea?

I have a text area to user to insert text, but if the user type {{name}}, {{nickname}} and {{email}}. It must show the message with that value. Let me demonstrate: For example: If user type: Hello, {{name}} has {{nickname}} and {{email}} the message must be like this: Hello, user A has nickname A and [e-mail].

This is my blade view:

// User insert text here
<textarea name="content" value=""></textarea>

My controller:

// My controller did not work, but I want to know how to use explode
$content = $request->input('content');
$new_content = explode($content, '{{name}}', '{{nickname}}', '{{email}}');

Answer

This is an approach I’ve used in a number of projects to allow template input and functions that return replacements.

here, $subject is the text being modified.

    preg_match_all('/{{(S*)}}/',$subject,$matches,PREG_SET_ORDER);
    
    foreach($matches as $match) {
        $func = 'replace_'.$match[1];
        if(method_exists($this,$func)) {
            $subject = str_replace($match[0], $this->$func($match), $this->subject);
        }
    }

You can then create functions that start with replace_ and return the string to be inserted in the original message

eg

public function replace_name($match)
{
  return $$this->user->name;
}