PHP多个数组到MySQL数据库

Question

我有 ClinicDays 数组，其中包含从星期一到星期日的复选框值和诊所 id 值：

clinicDays[]:4|1
clinicDays[]:1|1

管道前的第一个数字是诊所的 id，管道右侧的最后一个数字是当天的数字，我想做的是如果 ClinicDays 有值，那么将值放入表中，如果旧值与新值不匹配，则删除旧值，如果 ClinicDays 数组为空，则删除与 $doctorid 和 clinic_id 关联的所有行

插入值部分工作正常，但我无法让删除部分工作，可以指导我完成吗？

为此，我有 4 张桌子： 1-dg_clinics (id, Clinic_name) 2-dg_doctors (id, doctor_name) 3-dg_days (id, day_name) 4-dg_clinic_days (id, Clinic_id, doctor_id, day_id)

$doctorid = $_POST['doctor_doctorid'];

if(isset($_POST['clinicDays']))
{
    $clinics = array();
    foreach($_POST['clinicDays'] as $clinic_day_values){

        $clinic_day_values = explode("|", $clinicday);

        $q5 = "SELECT * FROM dg_doctors_clinic_days WHERE doctor_id = {$doctorid} AND clinic_id = {$clinic_day_values[0]} AND day_id = {$clinic_day_values[1]}";
        $getClinicDay = $db->query($q5);
        $num_days = mysql_num_rows($getClinicDay);

        if( $num_days == 0 ) {
            $q6 = "INSERT INTO dg_doctors_clinic_days (clinic_id,doctor_id,day_id,value,date_added) VALUES ({$clinic_day_values[0]},{$doctorid},$clinic_day_values[1],1,NOW())";
            $r6 = $db->query($q6);
        }
    }
    $items = implode(",", $_POST['checkAllClinics']);
    $q3 = "DELETE FROM dg_clinic_doctors WHERE doctor_id = {$doctorid} AND clinic_id = {} AND day_id NOT IN ({$items})";
    $r3 = $db->query($q3);

} else {
    $q8 = "DELETE FROM dg_doctors_clinic_days WHERE doctor_id = {$doctorid}";
    $r8 = $db->query($q8);
}

Answer 1

我相信您可以简化代码并通过将删除移到开头来解决问题，这将始终执行（并且在插入之前），这样您就不必跟踪需要的记录已删除，您不必检查记录是否已存在。

根据您发布的代码，您总是删除所有天，除非它们仍然被发布，所以试试这个简化的代码：

$doctorid = $_POST['doctor_doctorid'];

// Delete the clinic days for the doctor.
$q8 = "DELETE FROM dg_doctors_clinic_days WHERE doctor_id = {$doctorid}";
$r8 = $db->query($q8);
// IF any clinic days are posted, save them....
if (isset($_POST['clinicDays'])) {
    foreach($_POST['clinicDays'] as $clinic_day_values) {
        // NOTE: The variable $clinicday is NOT being set, is this a typo in your original code?
        $clinic_day_values = explode("|", $clinicday);
        $q6 = "INSERT INTO dg_doctors_clinic_days (clinic_id,doctor_id,day_id,value,date_added) VALUES ({$clinic_day_values[0]},{$doctorid},$clinic_day_values[1],1,NOW())";
        $r6 = $db->query($q6);
    }
}