contact_book.module

<?php

/**
*  Contact Book Module Logic
*/

// Provide access to the URL Class
use Drupal\Core\Url;
// Provide access to the URL Class


function contact_book_create_table() {
   // Table haeders row
   $header = [
    'id' => t('Contact'),
    'name' => t('Name'),
    'email' => t('Email'),
    'phone' => t('Phone'),
    'address' => t('Address'),
    'country' => t('Country'),
    'manage' => t('Manage'),
    'remove' => t('Remove'),
  ];


  // checking contacts from table
  $db_query = \Drupal::database()->select('contact_book', 'contacts');
  $db_query->fields('contacts', ['id','name','email','phone','address','country']);
  $db_results = $db_query->execute()->fetchAll();
  $rows=array();
  foreach($db_results as $contact){
      $edit_contact   = Url::fromUserInput('/set/contact?cid='.$contact->id);
      $delete_contact = Url::fromUserInput('/delete/contact/'.$contact->id);
      $p_contact = Url::fromUserInput('/show/contact/'.$contact->id);

      //print the contact from table
      $rows[] = array(
          'id' =>$contact->id,
          'name' =>  \Drupal::l($contact->name, $p_contact),
          'email' => $contact->email,
          'phone' => $contact->phone,
          'address' => $contact->address,
          'country' => $contact->country,

           \Drupal::l('Edit', $edit_contact),
           \Drupal::l('Delete', $delete_contact),
        );
    }
  // $rows = [
  // // [Markup::create('<strong>test 1</strong>'),'test'],
  // // ['1', test', 'test@test.com', 'test12345', 'test-bcd', 'Kenya'],
  // // ['2', test', 'test@test.com', 'test12345', 'test-bcd', 'Kenya'],
  // ];

  $build['table'] = [
    '#type' => 'table',
    '#header' => $header,
    '#rows' => $rows,
    '#empty' => t('No contacts have been found.'),
  ];
  return [
    '#type' => '#markup',
    '#markup' => render($build)
  ];
}






function contact_book_show_contact($cid) {
// checking contacts from table
    $db_query = \Drupal::database()->select('contact_book', 'contact')->condition('id', $cid);
    $db_query->fields('contact', ['id','name','email','phone','address','country']);
    $db_result = $db_query->execute()->fetchAll();
    // dd($db_result);
    $row=array();

    foreach($db_result as $contact){
    // dd($contact->name);
        $back = Url::fromUserInput('/view/contacts');
        $edit_contact   = Url::fromUserInput('/set/contact?cid='.$contact->id);
        $delete_contact = Url::fromUserInput('/delete/contact/'.$contact->id);

        return array(
        '#title' => 'PhoneBook Details:',
        '#markup' => '<h2>'.'Contact Name: <u>'.$contact->name.'</u></h2>'.
                    '<small>'.'<b>Email:</b> '.$contact->email.'</small>'.
                    '<small>'.'<b> Mobile:</b> '.$contact->phone.'</small>'.'</br>'.
                    '<strong>'.'Country: '.'</strong>'.'<i>'.$contact->country.'</i>'.'</br>'.
                    '<b>'.'Address: '.'</b>'.'</i>'.$contact->address.'</i>'.'</br>'.'</br>'.
                    '<h6>'.'<b> Manage Contact: </b> '
                            .\Drupal::l('Edit', $edit_contact).' '.'<b>|</b>'.' '.\Drupal::l('Delete', $delete_contact).
                    '</h6>'.'</br>'.
                    '<p>'.'<b> Go Back:</b> '.\Drupal::l('Return to Contacts Table', $back).'</p>'
        );
    }
 }