如您所见，我创建了下拉列表并将其命名为字段名称，并且我还具有计数功能。
我想要做的是，如果某些选择下拉菜单..显示在 10、20、.. 等数字中找到了多少结果。如果选择了第二个下拉菜单，它将检查选择的两个下拉菜单并传递结果计数..像那种连续的..如果你想看看我到底想要什么是去这里选择汽车计数将更新..
http://en.comparis.ch/Carfinder/marktplatz/Search.aspx
我有 ajax 并且运行良好，但我无法获得准确的 PHP 代码来计算实时时间。
AJAX 代码..
var xmlHttp
function showCount(str)
{
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
{
alert ("Your browser does not support AJAX!");
return;
}
var url="phpApplication.php";
url=url+"?action=count2";
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("POST",url,true);
xmlHttp.send(null);
}
function stateChanged()
{
if (xmlHttp.readyState==4)
{
document.getElementById("countR").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;
}
PHP 代码
function dropdown($field, $table)
{
//initialize variables
$oHTML = '';
$result = '';
//check to see if the field is passed correctly
if (($field == "")||($table == ""))
{
die("No column or table specified to create drop down from!");
}
$sql = "select distinct($field) from $table";
//call the db function and run the query
$result = $this->conn($sql);
//if no results are found to create a drop down return a textbox
if ((!$result) ||(mysql_num_rows($result)==0))
{
$oHTML .= "<input type='text' name='$field' value='' size='15'>";
}elseif (($result)&&(mysql_num_rows($result)>0)){
//build the select box out of the results
$oHTML .= "<select name='$field' onchange='showCount(this.value)'>\n<option value='all'>All</option>\n";
while ($rows = mysql_fetch_array($result))
{
$oHTML .= "<option value='".$rows[$field]."' name='".$rows[$field]."'>".$rows[$field]."</option>\n";
}
$oHTML .= "</select>\n";
}
//send the value back to the calling code
return $oHTML;
}//end function
function count1(){
$sql2 = "SELECT SQL_CALC_FOUND_ROWS * from produkt_finder_table where Bauform_d ='".($_POST['Bauform_d'])."' ";
$query = $this->conn($sql2);
$result = mysql_query( $query );
$count = mysql_result( mysql_query( 'SELECT FOUND_ROWS()' ), 0, 0 );
echo $count;
//$sql2 = "SELECT COUNT(Bauform_d) from produkt_finder_table where Bauform_d = 'mobil' ";
//echo var_dump($result1);
while($row = mysql_fetch_array($query))
{
// echo $row['COUNT(Bauform_d)'];
}
//echo mysql_num_rows($query);
// if (isset($_POST['Bauform_d']))
//{
/* if (mysql_num_rows($result)==0) {
echo '0';
} else {
echo mysql_num_rows($result);
$row = mysql_fetch_array($result);
echo $result;
echo $row['COUNT(Bauform_d)'];
// }
}*/
}
$action = $_GET['action'];
$proFin = new Application();
switch($action) {
case 'show':
$proFin->show_form();
break;
case 'search':
$proFin->search();
break;
case 'searchAll':
$proFin->searchAll();
break;
case 'count2':
$proFin->count1();
break;
}