Vue が Mysql データベース データのファジー クエリを実装する方法

<el-input v-model="keyWord" placeholder="请输入关键字搜索" clearable></el-input>
        <el-button type="success" icon="el-icon-search" @click="search"></el-button>

<?php
$servername = "主机地址";
$username = "账户";
$password = "密码";
$dbname = "数据库名称";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
} 

$keyWord = $_POST[&#39;keyWord&#39;];
//获取前端的参数 开始和结束number
if ( !isset( $_POST[&#39;offset&#39;] ) ) {
 echo 0;
 exit();
};
$offset = ( int )$_POST[&#39;offset&#39;];

if ( !isset( $_POST[&#39;limit&#39;] ) ) {
 echo 0;
 exit();
};
$limit = ( int )$_POST[&#39;limit&#39;];
//分页查询数据库
$sql = "SELECT * FROM posts where title like &#39;%$keyWord%&#39; order by id desc LIMIT $limit OFFSET $offset";
$result = $conn->query($sql);

$sqlGetCount = "SELECT COUNT(*) cnt FROM posts where title like &#39;%$keyWord%&#39;";
$rescnt = $conn->query($sqlGetCount);
$rescnt = $rescnt->fetch_assoc();
$arr = array();
if ($result->num_rows > 0) {
 while ( $row = $result->fetch_assoc() ) {
    array_push( $arr, $row );
}
 //echo json_encode( $arr, JSON_UNESCAPED_UNICODE );
 echo json_encode(array_merge(array(&#39;data&#39;=>$arr),array(&#39;total&#39;=>(int)$rescnt[&#39;cnt&#39;])));
 
} else {
    echo 0;
}
mysqli_close( $conn );
?>