Question

我发现当内部存在相同的变量时，只读取了第一个if条件，并且如果条件，则跳过另一个其他条件。怎么解决？

<select name='selectcriteria' class="form-control" multiple>
<option value="education">Education</option>
<option value="orphan">Orphan</option>
<option value="madrasah">Madrasah</option>
<option value="scholarship">Scholarship</option>
<option value="socialwalfare">Social Walfare</option>
</select>

If(isset($_GET['selectcriteria'])){
$criteria=$_GET['selectcriteria'];



if($criteria=='education'){
 $sqlselect="SELECT * FROM criteria WHERE criteria ='education'";
}
else if($criteria=='madrasah'){
$sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah'";
}
else if($criteria=='orphan'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'orphan'";
}
else if($criteria=='scholarship'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'scholarship'";
}
else if($criteria=='socialwalfare'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'socialwalfare'";
}
else if($criteria=='education'&&$criteria=='madrasah'){
 $sqlselect="SELECT * FROM criteria WHERE criteria ='education' OR criteria = 'madrasah'";
}
else if($criteria=='education'&&$criteria=='orphan'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria= 'orphan'";
}
else if($criteria=='education'&&$criteria=='scholarship'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria = 'scholarship'";
}
else if($criteria=='education'&&$criteria=='socialwalfare'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria = 'socialwalfare'";
}
else if($criteria=='education'&&$criteria=='madrasah'&&$criteria=='orphan'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria = 'madrasah' OR criteria = 'orphan'";
}
else if($criteria=='education'&&$criteria=='madrasah'&&$criteria=='scholarship'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria = 'madrasah' OR criteria = 'scholarship'";
}
else if($criteria=='education'&&$criteria=='madrasah'&&$criteria=='socialwalfare'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria = 'madrasah' OR criteria = 'socialwalfare'";
}
else if($criteria=='education'&&$criteria=='madrasah'&&$criteria=='socialwalfare'&&$criteria=='orphan'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'education' OR criteria = 'madrasah' OR criteria = 'socialwalfare' OR criteria= 'orphan'";
}
else if($criteria=='madrasah'&&$criteria=='orphan'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah' OR criteria = 'orphan'";
}
else if($criteria=='madrasah'&&$criteria=='scholarship'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah' OR criteria = 'scholarship'";
}
else if($criteria=='madrasah'&&$criteria=='socialwalfare'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah' OR citeria = 'socialwalfare'";
}
else if($criteria=='madrasah'&&$criteria=='orphan'&&$criteria=='scholarship'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah' OR criteria = 'orphan' OR criteria = 'scholarship'";
}
else if($criteria=='madrasah'&&$criteria=='orphan'&&$criteria=='socialwalfare'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah' OR criteria = 'orphan' OR criteria ='socialwalfare'";
}
else if($criteria=='madrasah'&&$criteria=='scholarship'&&$criteria=='socialwalfare'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'madrasah' OR criteria = 'scholarship' OR criteria='socialwalfare'";
}
else if($criteria=='orphan'&&$criteria=='scholarship'){
 $sqlselect="SELECT * FROM criteria WHERE criteria = 'orphan' OR criteria = 'scholarship'";
}
else if($criteria=='orphan'&&$criteria=='socialwalfare'){
$sqlselect="SELECT * FROM criteria WHERE criteria = 'orphan' or criteria = 'socialwalfare'";
}
else if($criteria=='orphan'&&$criteria=='scholarship'&&$criteria=='socialwalfare'){
$sqlselect="SELECT * FROM criteria WHERE criteria = 'orphan' OR criteria = 'scholarship' OR criteria = 'socialwalfare'";
}
else if($criteria=='scholarship'&&$criteria=='socialwalfare'){
$sqlselect="SELECT * FROM criteria WHERE criteria = 'scholarship' OR criteria = 'socialwalfare'";
}

$resultselect = mysqli_query($conn, $sqlselect);

当它在while条件下显示时，只显示与任何第一个条件匹配的数据，而跳过其他值而不读取。例如，如果我多选教育和奖学金，网址中的变量应该带有selectcriteria = education＆amp; selectcriteria = scholarship。但是随后会跳过一个值，因为另一个值与条件匹配。

Answer 1

由于您将获得多个值，因为它是多选的，您可以像这样使用它：

IN

选项2：

我相信，你也可以使用$selected = $_GET['selectcriteria']; $values = explode(',', $selected); $joinValues implode("' ", $values); $query = "SELECT * FROM criteria WHERE criteria in ('" . $joinValues . "');条款。

 var your_stringify_obj=JSON.stringify(your_Multidimensional_Json).
 $.ajax({
        type: "GET",
        url: 'url'+page.data.id,
        dataType: "JSON",
        data: your_stringify_obj,
        timeout: 10000,
        success: function(result){
            $.each(result[0], function (index,el) {
                $('#prosesloadingharga').hide();
                console.log("harga paket : " +el.harga+" , id harga paket : "+el.id);
            });
        },
        error: function(xhr, textStatus, thrownError) {
            console.log("error",xhr.error);
        }
    });
};

Answer 2

我不熟悉php的语法，但可以完成以下内容：

有一个字符串，上面写着=＆＃34;从标准中选择*，其中的条件为（＆＃34;

然后在＆＃39;中选择＆＃39;菜单，您可以使用它们附加到上面定义的字符串，最后正确关闭SQL字符串。

if（selectedvalue == abc）{ 附加到字符串＆＃39; abc＆＃39; }

if（selectedvalue == xyz）{ 附加到字符串，＆＃39; xyz＆＃39; }

最后附加＆＃39;）＆＃39;

当变量存在于第一个条件时，跳过另一个if条件

2 个答案: