php mysql分词搜索

<?php
// 连接数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 分词函数（简单示例）
function tokenize($text) {
    return explode(" ", $text);
}

// 用户输入的搜索词
$searchQuery = "PHP MySQL";

// 分词
$tokens = tokenize($searchQuery);

// 构建SQL查询
$sql = "SELECT * FROM articles WHERE ";
$conditions = [];

foreach ($tokens as $token) {
    $conditions[] = "content LIKE '%" . $conn->real_escape_string($token) . "%'";
}

$sql .= implode(" OR ", $conditions);

// 执行查询
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "标题: " . $row["title"]. " - 内容: " . $row["content"]. "<br>";
    }
} else {
    echo "没有找到相关内容";
}

$conn->close();
?>