Question

我想要做的是以下内容。在URL中，一次只能出现一个变量：

$search_query = $_GET['user_query'];
          $search_query2 = $_GET['crs_category'];

所以我想做的是以下几点。

如果user_query是url中存在的那个，则执行以下行

 $get_cats = "select * from courses where (course_title like '%$search_query%' )  AND course_date1 >= CURRENT_DATE()";

    $run_cats = mysqli_query($con, $get_cats);

    while ($row_cats=mysqli_fetch_array($run_cats)){
        $crs_sub1 = $row_cats['course_subc1'];
                $crs_sub2 = $row_cats['course_subc2'];
                        $crs_sub3 = $row_cats['course_subc3'];

        $crs_sub4 = $row_cats['course_subc4'];

        $crs_sub5 = $row_cats['course_subc5'];




        echo "<a href='searchPage.php?cat=$crs_sub1' id='liSpacing'><label id='labelSearch'><input type='checkbox' name='checkbox' value='value'>&nbsp;$crs_sub1</label></a> <br />";



    }

但是，如果它的url中存在crs_category变量，则执行以下操作：

$get_cats = "select * from category where (category_title like '%$search_query2%' )  AND course_date1 >= CURRENT_DATE()";
            $run_cats = mysqli_query($con, $get_cats);

    while ($row_cats=mysqli_fetch_array($run_cats)){
        $crs_sub1 = $row_cats['course_subc1'];
                $crs_sub2 = $row_cats['course_subc2'];
                        $crs_sub3 = $row_cats['course_subc3'];

        $crs_sub4 = $row_cats['course_subc4'];

        $crs_sub5 = $row_cats['course_subc5'];




        echo "<a href='searchPage.php?cat=$crs_sub1' id='liSpacing'><label id='labelSearch'><input type='checkbox' name='checkbox' value='value'>&nbsp;$crs_sub1</label></a> <br />";



    }

问题是如下，只有user_query或crs_category将一次显示在URL中，而不是两者都显示，因此我收到显示的错误。我想要做的是，如果该url变量等于this，请抓取这些信息，或者如果此url变量等于那个抓住那些items.w

另一方面，我还想做以下事情任何帮助将不胜感激

Answer 1

我相信这就是你想要的......

<?php
        if(isset($_GET['user_query']))
    {
$search_query = $_GET['user_query'];
        $get_cats = "select * from courses where (course_title like '%$search_query%' )  AND course_date1 >= CURRENT_DATE()";

            $run_cats = mysqli_query($con, $get_cats);

            while ($row_cats=mysqli_fetch_array($run_cats)){
                $crs_sub1 = $row_cats['course_subc1'];
                        $crs_sub2 = $row_cats['course_subc2'];
                                $crs_sub3 = $row_cats['course_subc3'];

                $crs_sub4 = $row_cats['course_subc4'];

                $crs_sub5 = $row_cats['course_subc5'];




                echo "<a href='searchPage.php?cat=$crs_sub1' id='liSpacing'><label id='labelSearch'><input type='checkbox' name='checkbox' value='value'>&nbsp;$crs_sub1</label></a> <br />";



            }
    }
    else if(isset($_GET['crs_category']))
    {
          $search_query2 = $_GET['crs_category'];
        $get_cats = "select * from category where (category_title like '%$search_query2%' )  AND course_date1 >= CURRENT_DATE()";
                    $run_cats = mysqli_query($con, $get_cats);

            while ($row_cats=mysqli_fetch_array($run_cats)){
                $crs_sub1 = $row_cats['course_subc1'];
                        $crs_sub2 = $row_cats['course_subc2'];
                                $crs_sub3 = $row_cats['course_subc3'];

                $crs_sub4 = $row_cats['course_subc4'];

                $crs_sub5 = $row_cats['course_subc5'];




                echo "<a href='searchPage.php?cat=$crs_sub1' id='liSpacing'><label id='labelSearch'><input type='checkbox' name='checkbox' value='value'>&nbsp;$crs_sub1</label></a> <br />";



            }
    }

?>

使用PHP变量

1 个答案: