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Database pdo connection problem

<?php try{ $pdo = new PDO("mysql:127.0.0.1:3306;dbname='blogs';charset=utf8mb4",'root',''); echo "pdo connection successful".""; }catch(Exc

移動用戶-1547390 2020-11-15 18:12:58 0  4  1147

How to solve it

錯誤頁面：Warning: PDO::__construct(): MySQL server has gone away in?E:\xampp\htdocs\ceshi\mvc\model\Db3.php?on line?74Warning: PDO::__construct(): Error while reading greeting packet. PID=1

什么銘浩 2019-08-02 15:16:09 0  2  1920

How should I operate this multi-selection process?

First, you can select all, or you can select some of them, but I can't figure out how to store the selected differences in the database and use the split function to split them. Please guide me. The code is as follows Session_start(); $username = $_SESSION["username"]; echo $username; $pdo...

英勇**團唐朝安志勇連連長 2019-11-13 15:31:14 0  0  799

How to close mysql error prompt

For example, what is the way to turn off error prompts in native mysql and pdo classes to avoid error messages being discovered by hackers. Please give me more details on how to modify it.

按鍵盤手指磨破皮 2017-09-22 22:32:48 0  2  1499

Please report to developers: PDO::__construct(): Server-sent charset (255) not recognized by client

I'm trying to connect to a MySQL database from a Symfony3 application. But when trying to create a MySQL schema from the Symfony console command, I get this error: PDO::__construct(): The server sent a character set (255) unknown to the client. Please report to the developers that both PHP and MySQL...

P粉808697471 2023-10-16 10:02:44 0  2  1312

php - pdo fails to insert data into database?

Error code: {code...} pdo code: {code...} The error message says that my sql has a syntax error, but my sql statement can insert data when mysql is executed, and I have insert permission. Why is this here? Something went wrong?

某草草 2017-05-16 12:58:00 0  4  883

Doubts about php compressed package version, apache compressed package version, mysql. compressed package version in Window10

Environment In Window10, you may encounter weird problems when connecting to MySQL configuration using PHP compressed package version, apache compressed package version, mysql. compressed package version or running the installation version: PHP connecting to MySQL configuration in Windows sometimes ...

WangKeJun 2020-03-21 16:16:01 0  0  987

PDO's automatic submission function is enabled on MySQL with autocommit turned off

I've just been assigned a codebase that uses traditional PHP and the library works without using PDO. The connection is made using the following mode: //Connect to the MySQL database $con = new mysqli($host, $user, $password, $database);//Check the connection if ($con->connect_error) {die(\"...

P粉011912640 2023-08-08 15:23:46 0  1  627

mysql - If PHP does not use PDO, how to prevent injection when constructing SQL statements?

If PHP does not use PDO, how to prevent injection when constructing SQL statements? Can sprint format string be eliminated?

三叔 2017-06-22 11:54:34 0  1  1068

I encountered a problem with make during the installation and configuration of linux pdo. Please give me some advice!

In fact, I just want to configure the apache+php+mysql+pdo+freetype+GD environment. After installing pdo_mysql and configure, I encountered the problem of requiring a soft link header file during make. After soft linking step by step, it stopped here; I'm in the beginner stage, please give me some a...

M.Z 2021-06-21 11:29:05 0  1  1063

php - PDO connects to MySQL, queries data and outputs it, but it is not printed on the page

As shown in the figure, after connecting to the database, only success is displayed on the page, and no data from the database is displayed. There is a known row of data in the database, id, name, and mail, but I don’t know why it is not displayed. Newbies need guidance.

ringa_lee 2017-05-16 13:09:37 0  2  464

Regarding the underlying processing issues of preventing injection of mysql prepared statements

PHP's PDO object or STMT object executes the SQL statement containing the injection. Looking at the MYSQL log, it is found that only the second single quote is escaped. SELECT * FROM admin WHERE user = '123\' or 1 = 1#' while using C and other languages. The log of calling the native API of libmysql...

phpcn_u5077 2017-06-15 18:24:58 0  2  1881

mysql query slows down after website is uploaded to server

The speed of opening the homepage in the local test is about 4900ms. After uploading to the server and setting up the homepage, the speed of opening the homepage becomes 29000ms. The speed of opening the homepage when testing to cancel the mysql query on the server is 400ms. All problems judged to b...

按鍵盤手指磨破皮 2017-10-05 17:09:57 0  1  1273

c++ - Which PHP extension source code is most suitable for novices to learn and read?

RT, my current level is that I have learned C language, and then I have written a simple extension myself (a very simple extension). Now I want to learn more about it. There are many extensions built into the official PHP source code package. I looked at something like The amount of extension code f...

過去多啦不再A夢 2017-06-05 11:07:15 0  1  715

php - Use various mysql driver methods. Problems occurred in all

rt. There is a secondary open source project on hand. The PDO driver has been started before. There will be a prompt in the log that there is a problem with the connection. But only occasionally. It's not a big problem. The template was changed some time ago. The links are even more confusing. . . T...

大家講道理 2017-06-10 09:47:32 0  1  814

Why has the pdo extension been turned on in my environment, but when I connect to mysql, I still get the message "could not find driver"

Mrzhou 2018-07-06 22:50:55 0  1  1286

Laravel Modal does not return data

I don't know why I'm not getting the value from the modal in my Laravel controller. Please check it for me. However, I use the same code for other modes and controllers. It's working and returning the value from the property without any issues. I'm using Laravel8 and php8.1; below is my code. app\Ht...

P粉174151913 2024-03-29 10:31:31 0  1  592

Can I use the automatic generation module of thinkphp5 in Windows 7 system? How to configure and use

明民 2017-10-10 17:04:14 0  2  1390

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

After installing the PHP toolbox, all the mysql tables in phpstudy that I installed before are gone. What should I do?

劉袁銘 2017-10-10 19:25:59 0  4  2944

mcrypt_get_key_size()

To use mcrypt_get_key_size() in php study, how to enable mcrypt_

劉袁銘 2017-10-10 19:47:34 0  1  1173