SQL搜索结果错误

Question

我想知道是否有人可以请求帮助

我有以下代码在SQL数据库中搜索结果。

即使我输入了这个人的全名，我也没有收到一些名字。如果我在其中放入一个他们名字的信件？

        <form class="form-horizontal" action="" method="POST" enctype="multipart/form-data">
              <input type="text" class="form-control1" id="keyword" name="keyword" value="" >

         <input class="btn-success btn" type="submit" name="search" id="search" value="Submit" onclick="this.value='Sending, please wait...'">

        </form>

<<?php

if(isset($_POST['search']) && !empty($_POST) ){
  $keyword = trim ($_REQUEST['keyword']);
echo "Keyword: ".$keyword;

  $servername = "localhost";
  $username = "user_name";
  $password = "*********";
  $dbname = "user_db";


  // Account Manager
  $conn = mysqli_connect($servername, $username, $password, $dbname);
  if (!$conn) {
  die("Connection failed: " . mysqli_connect_error());
  }
  $sql = "SELECT * FROM work_staff WHERE staff_first LIKE '%".$keyword."%' OR staff_surname LIKE '%".$keyword."%'";
  $result = mysqli_query($conn, $sql);
   while($row = mysqli_fetch_assoc($result)) {

     echo "Found: ".$row['staff_first']." ".$row['staff_surname'] ;
     echo " ";
     echo "<br>";
     echo "<br>";
  }
  mysqli_close($conn);
}
 ?>

我真的很沮丧。任何人可以提供的帮助都会很棒。

由于

罗布