php - 重构字母通配符语句

Question

如何重构它以处理每个字母(a 到 z)我不想为每个字母重新编写查询。

显示 HTML:

<div class="questionWrapper">
  <div class="question">
    <h3>A</h3>
    <?php foreach ($categoryA as $category) : ?>
       <p class="view"><?= $category['category']; ?></p>
    <?php endforeach; ?>
  </div>
</div>

查询示例:

$categoryA = query('SELECT * FROM category WHERE category LIKE "A%"',
  array('category' => ['category']),
  $conn);

$categoryB = query('SELECT * FROM category WHERE category LIKE "B%"',
  array('category' => ['category']),
  $conn);

功能:

function query($query, $bindings, $conn)
{
    $stmt = $conn->prepare($query);
    $stmt->execute($bindings);
    return $stmt;
}

Answer 1

我为您修复了使用占位符的问题:

$category = query('SELECT * FROM category WHERE category LIKE :category',
  array(':category' => '%'.$letter.'%'),
  $conn);