Home > Article > Backend Development > PHP+ajax real-time input automatic search matching method

PHP+ajax real-time input automatic search matching method

墨辰丷Original: 2018-06-07 09:57:212609browse

This article mainly introduces the method of automatic search and matching of php ajax real-time input. Interested friends can refer to it. I hope it will be helpful to everyone.

dropbox_index.php

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>主搜索引擎下拉框自动显示数据</title>
</head>
<script src="js/dropbox.js" type="text/javascript"></script>
<link href="css/dropbox.css" type="text/css" rel="stylesheet"/>
<body>
<form action="" method="post" enctype="multipart/form-data">
        <input name="txt" id="txt" class="txt" type="text" onkeyup ="showHint(this.value)" />    
        <input type="submit" class="btn" name="submit" value="Upload" /><br />
        <span id="txtHint" class="file-box"></span>
</form>
</body>
</html>

dropbox.js ajax

var xmlHttp
    function showHint(str)
    {
      if (str.length==0)
      { 
       document.getElementById("txtHint").innerHTML=""
       return
      }
      xmlHttp=GetXmlHttpObject()
      if (xmlHttp==null)
       {
         alert ("Browser does not support HTTP Request")
         return
       } 
      var url="responsepage.php"
      url=url+"?q="+str
      url=url+"&sid="+Math.random()
      xmlHttp.onreadystatechange=stateChanged 
      xmlHttp.open("GET",url,true)
      xmlHttp.send(null)
    }      
    //设置回调函数
    function stateChanged() 
    { 
      if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
       { 
        document.getElementById("txtHint").innerHTML=xmlHttp.responseText 
       } 
    }
    function GetXmlHttpObject()
    {
      var xmlHttp=null;
      try
       {
         // Firefox, Opera 8.0+, Safari
         xmlHttp=new XMLHttpRequest();
      }
      catch (e)
      {
         // Internet Explorer
         try
         {
          xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
         }
         catch (e)
         {
          xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
         }
       }
      return xmlHttp;
    }

dropbox.css

.txt{ height:22px; border:1px solid #cdcdcd; width:220px;border-right:none;}
.btn{ background-color:#FFF; border:1px solid #CDCDCD;height :26px; width:70px;}

responsepage.php

<?php
  //get the q parameter from URL  
  $q=$_GET["q"];
  //全部小写化
  $q=strtolower($q);
  //非空验证
  if(isset($q) && $q != &#39;&#39;)
  {
    $con = mysql_connect("localhost","root","lifu");
    if(!$con)
    {  
      die(&#39;Could not connect: &#39; .mysql_error());
    }
    mysql_select_db("my_db",$con);
    
    $sql = "select * from persons";
    //$sql="SELECT FirstName FROM Persons where Firstname like &#39;%$q%&#39;";
  
    $result =mysql_query($sql,$con);
    while($row = mysql_fetch_array($result))
     {
       //匹配判断
       if(stristr(strtolower($row[&#39;FirstName&#39;]),$q))
       {
         //echo "-----------------Persons-----------------";
         echo /* "firstname:" .*/ $row[&#39;FirstName&#39;] . "<br />";
         //echo "lastname:" . $row[&#39;LastName&#39;] . "<br />";
         //echo "age:" . $row[&#39;Age&#39;] . "<br />";
       }
       //echo $row[&#39;FirstName&#39;] . "<br />";
     }
    mysql_close($con);
   }
?>

Database:

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

The function of ZipArchive function in php

php How to serialize and serialize data Deserialization

phpHow to get the operating system type

The above is the detailed content of PHP+ajax real-time input automatic search matching method. For more information, please follow other related articles on the PHP Chinese website!

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Previous article：Implement video photography in phpNext article：Implement video photography in php

See more

PHP+ajax real-time input automatic search matching method

Related articles