trying to get property of non object php

Php object-oriented content 1. What is object-oriented? Object-Oriented Programming (Object Oriented Programming, OOP, Object-Oriented Programming) is a computer Programming architecture, one basic principle of OOP is that a computer program is

Ensure the security of your PHP application and ensure that your PHP application Before you beginIn this tutorial, you will learn how to add security to your own PHP Web application. This tutorial assumes that you have at least one year of

PHP Application Security, PHP application Security Security needs to be thoroughly understood and mastered, both in development and during interviews or technical discussions. TargetThe goal of this tutorial is to give you an idea of how you should

PHP is called the Magic Method (Magic methods), which starts with two underscores, and these methods play an important role in PHP. Magic methods include: __construct (), constructor for class__destruct (), Destructor of class__call () Called when

Security needs to be thoroughly understood and mastered, both in development and during interviews or technical discussions. GoalThe goal of this tutorial is to give you an idea of how you should protect your own built WEB applications. Explains

Summary of magic methods in PHP: __construct, _ destruct, _ call, _ callstatic, __get, _ set, _ isset, _ unset, _ sleep, _ wakeup, _ tostring, _ set_state, _ clone and _ autoload 1. _ Get, _ setThese two methods are designed for attributes that

We all know that security is important, but the trend in the industry is to add security until the last minute. Since it's not possible to completely protect a Web application, why bother? Wrong. There are a few simple steps you can take to make

Apache configuration file httpd.conf Chinese detailed## The configuration file based on the NCSA server is written by Rob McCool, Longzi translation## Apache Server master configuration file. Includes directory settings for server directives.# More

Everyone knows that security is important, but the trend in the industry is to add security until the last minute. Since it's not possible to fully protect a WEB application, why bother? Wrong. The security of your PHP WEB application can be greatly

Rule 1: Never trust external data or inputThe first thing you must realize about WEB application security is that you should not trust external data. External data (outside) includes any data that is not directly entered by programmers in PHP (PHP