Solution 1:
<?php
$sql = "SELECT `ingredient_name` FROM `ingredients`";
$ingredients = $pdo->query($sql)->fetchAll(PDO::FETCH_COLUMN);
PDO fetch one column from table into 1-dimensional array
Solution 1:
<?php
$sql = "SELECT `ingredient_name` FROM `ingredients`";
$ingredients = $pdo->query($sql)->fetchAll(PDO::FETCH_COLUMN);