mysql PDO with SELECT OR, Error!: SQLSTATE[HY093] - php

Question

I have a simple search form that sends a post request to my php file, that contains the input like this "searchword=test1". I then use that with PDO to search my table for mathing data.
So far I was only searching one column, using this statement:
$query = $db->prepare("SELECT * FROM articles WHERE title LIKE :seachword);
but now I want to search trought 3 columns (named title, extract and body). I changed my code to:
$query = $db->prepare("SELECT * FROM articles WHERE title LIKE :seachword OR extract LIKE :searchword OR body LIKE :searchword");
and now I get an error saying "Error!: SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens<br/>".
If I run the SQL statement using bash ( SELECT * FROM articles WHERE title LIKE '%test%' OR body LIKE '%elem%';), the query results return fine.
Any idea what I'm missing?
Here's my code:
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
try {
$hostname = "localhost";
$username = "root";
$password = "";
$db = new PDO("mysql:host=$hostname;dbname=topdecka_PTC",$username, $password);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
if (!empty($_POST["searchword"])) {
$searchword = $_POST["searchword"];
$query = $db->prepare("SELECT * FROM articles WHERE title LIKE :seachword OR extract LIKE :searchword OR body LIKE :searchword");
$query->execute(array(":seachword" => "%" . $searchword . "%"));
$result = $query->fetchAll(PDO::FETCH_ASSOC);
echo json_encode($result);
die();
}
else {
$query = $db->prepare('SELECT * FROM articles');
$query->execute();
$result = $query->fetchAll(PDO::FETCH_ASSOC);
echo json_encode($result);
die();
}
} catch (PDOException $e) {
echo "Error!: " . $e->getMessage() . "<br/>";
die();
}
?>

Answer 1

You have a typo: 2 x :seachword and 2 x :searchword