本文介绍了PHP PDO 动态更新查询到 MYSQL的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个包含图片上传和文本输入的表单.它不断用 NULL 替换 profile_picture
字段.因此,我正在尝试创建一个动态更新查询,如果一个值为空,它将完全从查询中排除.
I have a form with an image upload and text inputs. it keeps replacing the profile_picture
field with NULL. Therefore, I'm trying to create a dynamic update query, where if one value is empty it's excluded from the query altogether.
感谢任何帮助.
图片上传:
if (!empty($_FILES['profile_picture']) && $_FILES['profile_picture']['error'] == UPLOAD_ERR_OK) {
// Rename the uploaded file
$uploadName = $_FILES['profile_picture']['name'];
$tmp_name = $_FILES['profile_picture']['tmp_file'];
$ext = strtolower(substr($uploadName, strripos($uploadName, '.')+1));
$filename = round(microtime(true)).mt_rand().'.'.$ext;
if (move_uploaded_file($_FILES['profile_picture']['tmp_name'],'../profile_picutres/'. $filename)) {
}
}
更新查询:
$stmt = $dbh->prepare("UPDATE 001_user_table_as SET profile_picture=:profile_picture, first_name=:first_name, last_name=:last_name, phone_number=:phone_number, nationality=:nationality, years_experience=:years_experience, data=:data WHERE id=:id");
$stmt->bindParam(':profile_picture', $filename);
$stmt->bindParam(':first_name', $first_name);
$stmt->bindParam(':last_name', $last_name);
$stmt->bindParam(':phone_number', $phone_number);
$stmt->bindParam(':nationality', $nationality);
$stmt->bindParam(':years_experience', $years_experience);
$stmt->bindParam(':data', $cv_data);
$stmt->bindParam(':id', $user_id);
if($stmt->execute()){
$response["message"] = 'success';
}else{
$response["message"] = 'error';
$errors++;
}
推荐答案
下面是解决方案,如果输入为空,它将使用该字段中的现有数据并且不仅接受 $_POST变量,但所有变量.
Below is the solution, where an input is empty, it'll use the existing data in that field and will accept not only
$_POST
variables, but all variables.
// the list of allowed field names
$allowed = ["profile_picture","first_name","last_name", "phone_number", "nationality", "years_experience", "data" ];
// initialize an array with values:
$params = [];
// initialize a string with `fieldname` = :placeholder pairs
$setStr = "";
// loop over source data array
foreach ($allowed as $key)
{
if (!empty([$key]) || $key != "" || $key != NULL)
{
if($GLOBALS[$key] != NULL){
$setStr .= "`$key` = :$key ,";
$params[$key] = $GLOBALS[$key];
}else{
$setStr .= "`$key` = $key ,";
}
}else{
}
}
$setStr = rtrim($setStr, ",");
$params['id'] = $_SESSION['user_id'];
$dbh->prepare("UPDATE 001_user_table_as SET $setStr WHERE id = :id")->execute($params);
这篇关于PHP PDO 动态更新查询到 MYSQL的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!