PHP 简单实现MySQL数据搜索、添加数据功能

<form method="post" action="search1.php" name="search">  
<input name="search" type="text" value="" size="15">   
<input type="submit" value="Search">  
</form>以下为数据库增加：...</p>  
<div>
 <form action="insert.php" method="post">
nikename: <input type="text" name="nikename" />
email: <input type="text" name="email" />
<input type="submit" />
</form>
</div>

<?php
$con = mysql_connect("localhost","root","root");
if (!$con)
  {
  die(‘Could not connect: ‘ . mysql_error());
  }
 
mysql_select_db("testdb", $con);
 $searchs = $_POST[‘search‘];  //传递search框过来的值
 $searchs= trim($searchs);
if (!$searchs)
{
echo ‘搜索框不能为空.‘;
exit;
}
$result = mysql_query("SELECT * FROM user where nikename like ‘%$searchs%‘");
if (mysql_num_rows($result) < 1) echo ‘没有数据‘;
 
while($row = mysql_fetch_array($result))
 {
  echo $row[‘nikename‘] . " " . $row[‘email‘];
  echo "<br />";
  }
mysql_close($con);
?>

<?php
$con = mysql_connect("localhost","root","root");
if (!$con)
  {
  die(‘Could not connect: ‘ . mysql_error());
  }
 
mysql_select_db("testdb", $con);
$nikename=$_POST[‘nikename‘];  // create short variable names
$email=$_POST[‘email‘]; 
$nikename= trim($nikename);
 
if (!$nikename || !$email) //判断是否为空
{
echo ‘不能为空‘;
exit;
}
 
$sql="INSERT INTO user (nikename, email )
VALUES
(‘$nikename‘,‘$email‘)";
 
 
if (!mysql_query($sql,$con))
  {
  die(‘Error: ‘ . mysql_error());
  }
echo "1 record added";
 
mysql_close($con)
?>