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由于没有任何帮助，我可能会更改问题解释，但我真的需要帮助。我的表单中有一个搜索框，使用户能够在 mysql 表中搜索学生数据，我只能成功搜索单个字段，例如（名字或第二名或先生姓名）对我来说最大的问题是如何搜索多个字段相同的文本输入字段或任意数量的文本输入字段，例如（text1，text2，text3），我只想得到准确的结果。如有错误请见谅。

这里是我用来进行单字段搜索的 php 代码。

<html>
<head></head>
<body><input type="text" name="query" value=""/>
     <input name="submit" type="submit" value="Search" />

     <?php
     $query="query";

//mysql_connect

$query='query';
if (isset($_GET['query'])) 
    {    
        $query=$_GET['query'];

        // Instructions if $_POST['value'] exist    
    } 

$raw_results = mysql_query("SELECT * FROM stdreg_exam 
                  WHERE (`fname` LIKE '%".$query."%') or (`secname` LIKE '%".$query."%')or  
                     (`date` LIKE '%".$query."%') or (`surname` LIKE '%".$query."%')") or  
    die(mysql_error());


$raw_results2 = mysql_query("SELECT(idnumber) FROM student 
                           WHERE (`fname` LIKE '%".$query."%') or (`secname` LIKE  
                            '%".$query."%') or (`date` LIKE '%".$query."%')or    
                              (`surname` LIKE '%".$query."%')") or die(mysql_error());  


// * means that it selects all fields, you can also write: `id`, `title`, `text`
// articles is the name of our table

// '%$query%' is what we're looking for, % means anything, for example if $query is Hello
// it will match "hello", "Hello man", "gogohello", if you want exact match use `title`='$query'
// or if you want to match just full word so "gogohello" is out use '% $query %' ...OR ... '$query %' ... OR ... '% $query'

if(mysql_num_rows($raw_results) > 0){ 
    // if one or more rows are  
    returned do following


                    while($results = mysql_fetch_array($raw_results)){
                        while($results2 = mysql_fetch_array($raw_results2)){

                            // $results = mysql_fetch_array($raw_results) puts data from database into  
                            array, while it's valid it does the loop

    echo "<table width='750' height='5' cellpadding='2'  
                                         cellspacing='0' border='0'>";
echo"<tr><td>Std_id</td><td>Mathematics</td><td>English</td> 
               <td>Kiswahili</td><td>Geograph</td><td>Ict</td><td>Science</td> 
                <td>History</td><td>Pds</td><td>V skill</td><td>French</td> 
                 <td>Religion</td><td>Civics</td>";
echo "<h4>&nbsp;".$results['exam_name']."&nbsp; Examination result for   
                  &nbsp;" .$results['fname']."&nbsp;" .$results['secname']  
."&nbsp;".$results['surname']."&nbsp;".$results['class']."&nbsp;Class"."&nbsp;        
                      held on</p>".$results['date']."<hr><th>"; echo"<tr>";

echo ""."<td>".$results2['idnumber'].""."<td>".$results['mathematics']."%"." 
               <td>".$results['english']."%"."<td>".$results['kiswahili']."%"."  
               <td>".$results['geograph']."%"."<td>".$results['ict']."%"."
               <td>".$results['science']."%"."<td>".$results['history']."%"." 
               <td>".$results['pds']."%"."<td>".$results['vskill']."%"." 
               <td>".$results['french']."%"."<td>".$results['religion']."%"." 
               <td>".$results['civics']."%"."</td></p>";echo"</table>";                
//posts results gotten from database(title and text) you can also show id  
($results['id'])
}

}
}
               else{ 
                   // if there is no matching rows do following
                   echo "No such information in School database";
               }

}
                     else{ 
                         // if query length is less than minimum
                         echo "Enter more strings!!!Minimum length is ".$min_length; "Charactes";
                     }

?>
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2 回答 2

0

如果您有 3 个文本字段，比如说 text1、text2 和 text3，您需要从数据库中获取搜索结果。你可以试试这样的

$query = "SELECT your_feilds,another_fields FROM your_table WHERE 1=1 ";

if($_POST['text1'])
    $query .= " AND text1_field like '%$_POST['text1']%' ";

if($_POST['text2'])
    $query .= " AND text2_field like '%$_POST['text2']%' ";

if($_POST['text3'])
    $query .= " AND text3_field like '%$_POST['text3']%' ";


$result = mysql_query($query);
于 2013-11-10T04:06:42.540 回答
0

#Shafeeq 的上述答案非常实用，并且正在工作，因为我对我的一个应用程序使用了相同的方法，但是有一个问题，如果您有另一个字段，让我们说日期并且您想在两个日期之间进行搜索。查询将是这样的

if($_POST['from_date'] && $_POST['To_date'])
$query .= " AND date between '$from_field' AND '$To_field' ";

然后它不适用于其他文件

于 2017-02-21T07:24:57.023 回答