"PHP Public Platform Development Series"
01. Configure the interface02. Public Platform Sample Code analysis03. Subscription event (SUBSCRIBE) processing04. Simple Reply Function development05.API Weather forecast Function development
This address:
Empty checks whether a variable is "null", and isset checks whether a variable has been set. This so-called "name implies" leads me to a detour: When a variable value is equal to 0, empty () will also be True)
Empty checks whether a variable is
The isset () function of PHP is generally used to check whether the variable is set.Format: bool isset (mixed var [, mixed var [,...])
Function: checks whether variables are set.
Return Value:
If the variable does not exist, FALSE is returned.If
Database PDO operations. For more information, see.
The code is as follows:
/**
* Database PDO operations
*/
Class MysqlPdo {
Public static $ PDOStatement = null;
/**
* Database connection parameter configuration
* @ Var array
* @ Access public
*/
PHPisset () function and empty () function are different. Empty checks whether a variable is null, and isset determines whether a variable has been set. Just as the name implies, I took some detours at the beginning: When a variable value is equal
Create Category cache based on conditions to reduce category usage
The code is as follows:
/**
* Function: Create a category based on the condition. cache is used to reduce the category.
* Creation Date: Thu May 31 15:55:11 CST 2007
* Last update:
Through learning the PHP language, you should know that it is a function-based HTML scripting language. The huge function library supports the implementation of PHP functions. Next we will introduce the usage of PHP functions isset () and empty.
Through learning the PHP language, you should know that it is a function-based HTML scripting language. The huge function library supports the implementation of PHP functions. Next we will introduce the usage of PHP functions isset () and empty. The
Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time,
: This article describes the differences between PHPisset and empty. For more information about PHP tutorials, see. The isset () function of PHP is generally used to check whether the variable is set.
Format: bool isset (mixed var [, mixed var [,...]
The code is as follows:Copy code /*** Ecshop jpgraph chart class library* ===================================================== ======================================* The open-source jpgraph library is used to display various types of data in
Provides various official and user-released code examples. For code reference, you are welcome to exchange and learn about the simple import function of the ExecelPHP class tp3.1.3.
Public function import ($ file = ''){ Vendor ('excel. PHPExcel
Yang Zhiyuan, co-founder of Yahoo!, will announce that the company's search network will enter Web Services on July 15, March 1. Yahoo! has established the Yahoo Search Developer Network on www.developer.yahoo.com. The company plans to launch this
ThinkPHP5 ACL user permission module Usage Details, thinkphp5acl
This document describes the usage of the thinkPHP5 ACL user permission module. We will share this with you for your reference. The details are as follows:
Thinkphp5 has recently been
I do not understand PHP, now query needs to log in and then query, I would like to change to do not need to log on can be queried do not know whether to change my post this paragraph, please see friends, thank you,!
Session_Start
This article mainly introduced the PHP implementation to support SSL connection SMTP mail send class, the example analyzes the PHP implementation SMTP mail sends the class the principle and the technique, as well as the support SSL connection method,
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