PHP

One, what is a single case mode? 1, meaningAs an object's creation pattern, the singleton pattern ensures that a class has only one instance, and instantiates it and provides it globally to the entire system. Instead of creating an instance copy, it

Because the project often encountered file upload, so encapsulates a common file upload class, the role of supporting the group file upload, and different upload fields can upload different file types, different file types can limit the size of the

This function is a function in WordPress, the function is to get adjacent post articles. The function is not large, the valid code is about 70 lines, but it contains a lot of knowledge, so specifically with an article to explain. The source code

PHP functions Mt_rand () and Rand () will have a chance of repeating random numbers when they are generated in batches. Srand () and Mt_srand () are not explicitly invoked at the beginning of PHP4.1, and seeds are automatically generated at Mt_rand

PHP micro-Scan Code PC-side automatic landing register with the interface scope is snsapi_userinfo, micro-letter landing is a Web page authorization landing, and the other is a micro-letter joint landing Web page Authorization Login:

STRTR (string,from,to): Replace one character at a distance, whichever is shorter in the From and to, for example:STRTR ("Aidenliu", "AI", "B") replaces only the a output that appears in the original string: BidenliuSTRTR ("Aidenliu", "a", "BC")

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Regular expression matching an email address: w+ ([-+.] w+) *@w+ ([-.] w+) *.w+ ([-.] w+) *Regular expressions that match URL URLs: [a-za-z]+://[^s]* Let's look at an example Echo ' A: '. Htmlspecialchars ($a); Echo ' a1: '; $a 1 =

/*Server Time July 22, 2010 16:24:57 Beijing Time: July 22, 2010 16:24:57Server domain name/IP address 192.168.0.118 (192.168.0.118)server operating system Windows Kernel version: JimmyHost name NTServer Interpreter engine apache/2.2.8 (Win32) php/5.

When you use the Mail method to send a letter, if the title or sender contains Chinese, it will cause garbled text, and the body will not. The solution is as follows First Use the function Base64_encode ()? Using MIME base64 to encode dataThe

The week of PHP under a graphics software library: GD graphics library, can be used for dynamic processing graphics images. GD provides support for many programming languages such as C, Perl, Python, PHP, OCaml, and so on. In addition to generating

Summary Xml Reading configuration Files Easy Way General method PHP parsing xml Configuration file Analytical Database

Php does not provide a function that returns the number of milliseconds, but provides a microtime () function that returns an array containing two elements, one being the number of seconds, one is the number of milliseconds represented by decimals.

Finally, let me find the solution, that is, to implement this function through the PHP program execution function, because there are too many things that can solve ZIP files now (if you do not believe it, you can go to the place where you have

The newly configured PHP environment or configuration changes have just been made, such as the newly loaded DLL extension and webpage access, may cause "invalid memory location access ." . The main reason is that the DLL extension fails to load.We

A constant must be defined before use; otherwise, an error occurs during program execution. In the php Tutorial, use the define () function to define constants.1. Syntax format: define ("constant name", "constant value ");Example: define ("php360", "

The code segment is found when I search for related solutions on the internet. The logic of the makePregIP function of this class is a bit problematic. I have modified it and can use it. This function allows access from IP addresses in the whitelist.

And supports Class c ip addresses. For example:Ip.txt192.168211.67.188211.67.191.25The code is as follows: The code is as follows:Copy code /** IP address blacklist and whitelist* The ip address of the visitor address is in ip.txt and supports

Today, I improved my file Upload systems for several other websites.Php code, no js, file type determined by suffix name, non-mime judgment.Create up. php with the following code: The code is as follows:Copy code $ Uptype = array ("jar", "zip ");

First, let's take a look at the definitions of the two methods:Function prototype: array split (string $ pattern, string $ string [, int $ limit])Function prototype: array explode (string $ separator, string $ string [, int $ limit])There is no