我得到通知：未定義指數：使用Ajax調用

-3

時select_dept我想顯示的醫生的名字對應的，所以我必須使用AJAX 專業在選擇專業相應的醫生的名字也將顯示我得到錯誤像這樣和醫生列表顯示不出來我得到通知：未定義指數：使用Ajax調用

  Notice: Undefined index: select_dept in C:\wamp\www\xx\get_specialist.php 
      on line 2 
       Call Stack 
       # Time Memory Function Location 
      1 0.0012 140616 {main}() ..\get_specialist.php:0

我的表單代碼

    <select name="select_dept" id="select_dept" 
       class="textBox" style="width:180px" onChange="getSpecialist(this.value)"> 
     <option value="">Select Department</option> 
     <?php 
     include("db_conexn.php"); 
     $res=mysql_query("SELECT * FROM imh_departments"); 
     while($rowCat2 = mysql_fetch_array($res)){?> 
     <option value="<?php echo $rowCat2['depart_id']?>"> 
       <?php echo $rowCat2['department_name'];?></option> 
     <?php }?> 
     </select> 

      <div id="statediv"> 
     <select name="doct" > 
     <option>Select Doctor</option> 
     </select> 
     </div>

我的Ajax代碼

  <script language="javascript" type="text/javascript"> 

      function getXMLHTTP() { //function to return the xml http object 
     var xmlhttp=false; 
     try{ 
      xmlhttp=new XMLHttpRequest(); 
     } 
     catch(e) {  
      try{    
       xmlhttp= new ActiveXObject("Microsoft.XMLHTTP"); 
      } 
      catch(e){ 
       try{ 
       xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); 
       } 
       catch(e1){ 
        xmlhttp=false; 
       } 
      } 
     } 

     return xmlhttp; 
    } 

    function getSpecialist(countryId) 
{  
    var strURL="get_specialist.php?country="+countryId; 
    var req = getXMLHTTP(); 

    if (req){ 

     req.onreadystatechange = function() { 
      if (req.readyState == 4) { 
       // only if "OK" 
       if (req.status == 200) 
      {       
        document.getElementById('statediv').innerHTML=req.responseText; 

       } else { 
       alert("Problem while using XMLHTTP:\n" + req.statusText); 
       } 
      }    
     }   
     req.open("GET", strURL, true); 
     req.send(null); 
    }  
}

get_specialist.php代碼

 <?php 
     $country=$_REQUEST['select_dept']; 
     include("db_conexn.php"); 
     $query="SELECT doct_id,doct_name FROM imh_doctors WHERE depart_id='$country'"; 
     $result=mysql_query($query); 
     ?> 
<select name="doct" > 
<option>Select Doctor</option> 
<?php while ($row=mysql_fetch_array($result)){?> 
<option value=<?php echo $row['doct_id'];?>><?php echo $row['doct_name'];?></option> 
<?php } ?> 
</select>

來源

2014-01-25 Arun Arun

您

$country=$_REQUEST['select_dept'];

應該

if(isset($_REQUEST['country'])) { 
    $country=$_REQUEST['country']; 
// rest of db code 
}

請注意，你的代碼是開放的SQL注入和使用mysqli和mysqli_real_escape_string代替。

來源

2014-01-25 08:50:29 Tims

謝謝@Tims它工作... –

您分配$country到select_dept，你可能想改變這種狀況。

$country = $_REQUEST['country'];

來源

2014-01-25 08:46:40 Deryck

我得到通知：未定義指數：使用Ajax調用

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