Home Backend Development PHP Tutorial Tutorial on calling PDO_PHP in another class

Tutorial on calling PDO_PHP in another class

Jul 13, 2016 am 10:52 AM
build class pdo exist of kind transfer connect




Call PDO
in another class


There is a class build class, and PDO is connected. The call is $db

I made an error when calling $db in the build class, prompting that there is a problem with query

I wrote this in the class

$query = $db->query($sql)

Let me answer




Website ideas and solutions
I don’t have a very deep understanding of classes. Please give me some support!

Website ideas and solutions
Just say there was an error. If you don’t post the error code, who knows what went wrong


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632508.htmlTechArticleCall PDO in another class. There is a class build class, and PDO has been connected and called $db. I am building There is an error when calling $db in the class. It prompts that there is a problem with the query. I wrote this in the class...
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to connect keep body fat scale How to connect keep body fat scale Mar 07, 2024 pm 04:50 PM

How to connect the keep body fat scale? Keep has a specially designed body fat scale, but most users do not know how to connect the keep body fat scale. Next is the graphic tutorial on the connection method of the keep body fat scale that the editor brings to users. , interested users come and take a look! How to connect the keep body fat scale 1. First open the keep software, go to the main page, click [My] in the lower right corner, and select [Smart Hardware]; 2. Then on the My Smart Devices page, click the [Add Device] button in the middle; 3 , then select the device you want to add interface, select [Smart Body Fat/Weight Scale]; 4. Then on the device model selection page, click the [keep body fat scale] option; 5. Finally, in the interface shown below, finally [Add Now] at the bottom

Shared printer cannot connect to printer Shared printer cannot connect to printer Feb 22, 2024 pm 01:09 PM

With the development of the digital era, shared printers have become an indispensable part of the modern office environment. However, sometimes we may encounter the problem that the shared printer cannot be connected to the printer, which will not only affect work efficiency, but also cause a series of troubles. This article aims to explore the reasons and solutions for why a shared printer cannot connect to the printer. There are many reasons why a shared printer cannot connect to the printer, the most common of which is network issues. If the network connection between the shared printer and the printer is unstable or interrupted, normal operation will not be possible.

How to solve limited network connection in Windows 10 How to solve limited network connection in Windows 10 Feb 19, 2024 pm 09:20 PM

Solutions to Restricted Network Connections in Win10 With the rapid development of technology, the Internet has become an indispensable part of people's lives. However, sometimes we may encounter some problems when connecting to the Internet on computers using the Windows 10 operating system, one of which is restricted connections. In this case, we cannot access web pages, download files, or use network functions normally. So, is there any way to solve this problem? This article will introduce you to several common solutions. 1. Check the network connection settings. First, I

How to connect OnePlus watch to Bluetooth headset_How to connect OnePlus watch to Bluetooth headset How to connect OnePlus watch to Bluetooth headset_How to connect OnePlus watch to Bluetooth headset Mar 23, 2024 pm 01:16 PM

1. Place the earphones in the earphone box and keep the lid open. Press and hold the button on the box to enter the pairing state of the earphones. 2. Turn on the watch music function and select Bluetooth headphones, or select Bluetooth headphones in the watch settings function. 3. Select the headset on the watch to pair successfully.

Microsoft Win11 24H2 Build 26100 has found multiple bugs and installation is not recommended Microsoft Win11 24H2 Build 26100 has found multiple bugs and installation is not recommended Apr 07, 2024 pm 09:22 PM

The latest news from this site on April 7 is that multiple bugs have been discovered in Microsoft Win1124H2Build26100, and it is temporarily not recommended to install it on commonly used devices. Windows 1124H2 is still in a very unstable stage. Although Microsoft will gradually fix the problem through monthly cumulative updates, it may take some time before this version is officially released and brings a stable experience to everyone. If any user has installed the 24H2 version image and encountered problems, it is recommended that the user reinstall it. It is now relatively stable. ZacBowden, encountered a Blue Screen of Death when trying to reset Windows 1124H2Build26100 version, and the "Reset this PC" function was supposed to fix system problems, but instead

Why is there no sound after my phone is connected to a Bluetooth headset? Why is there no sound after my phone is connected to a Bluetooth headset? Feb 20, 2024 am 11:42 AM

Bluetooth headsets have become one of the indispensable accessories in modern life, allowing us to enjoy music, make calls, and even watch videos anytime and anywhere. However, when using Bluetooth headsets, you may sometimes encounter some problems, such as no sound after connecting to a mobile phone. This article will introduce some common solutions to help you solve the problem of no sound from Bluetooth headsets connected to your mobile phone. First, make sure the Bluetooth headset is successfully connected to your phone. Find the Bluetooth option in your phone's settings, turn on the Bluetooth function, and search for available devices. When your Bluetooth headset appears

Steps to connect game controller to Gohan Arcade Steps to connect game controller to Gohan Arcade Mar 19, 2024 pm 03:55 PM

How to connect Bluetooth controller to Gohan Arcade? Gohan Game Center is a game box used by many mobile game players. It contains a large number of popular game resources and rich game-related functions. Below, the editor will introduce the game controller connection method. Players, please take a look. 1. First go to the homepage of Gohan Game Center APP, and then click the "My" option in the lower right corner of the homepage; 2. Find the [Controller] function in the My page, the location is shown in the picture below, and click to go to settings; 3. Select to turn it on For the Bluetooth function of the mobile phone, confirm that the power of the controller is on; 4. Finally, follow the instructions of the controller to make a matching connection. If the connection is successful, you can use the mobile game to experience various games.

How to connect keep to Huawei bracelet How to connect keep to Huawei bracelet Mar 07, 2024 pm 09:46 PM

How to connect keep to Huawei bracelet? You can connect Huawei bracelet in keep software. Most users don’t know how to connect Huawei bracelet. Next is the graphic tutorial of how to connect keep to Huawei bracelet brought by the editor. Interested users come and take a look! How to connect keep to Huawei bracelet 1. First open the keep application, click [Me] in the lower right corner of the main page to enter the special area, and select [Smart Hardware]; 2. Then challenge to the My Smart Device function page, click [Add Device] in the middle; 3. Then on the page of selecting the device you want to add, select the [Smart Bracelet/Watch] function; 4. Finally, on the interface shown below, click on the Huawei watch model to connect.

See all articles