How can I search in MySQL with FULLTEXT index?

You need to search the database, which contains ZIP codes and cities. In phpMyAdmin all fields, specify the FULLTEXT index, the search is performed in the following way:

<?php
 require(__DIR__ . "/../includes/config.php");
 $places = [];
 $places = CS50::query("SELECT * FROM places WHERE MATCH(postal_code, place_name) AGAINST (?)", $_GET["geo"]);

 header("Content-type: application/json");
 print(json_encode($places, JSON_PRETTY_PRINT));
?>

Page search display. The string in $_GET, you can insert a index of cities and name of cities, respectively the database, but no options work. At "/home/ubuntu/workspace/pset8/vendor/library50-php-5/CS50/CS50.php on line 352" is only the output of the error:

$statement = $handle->query($query);
 if ($statement === false)
{
 trigger_error($handle->errorInfo()[2], E_USER_ERROR);
 }