PHP Tutorials

Global variables and the "global" keyword PHP By default defines some "super Global (Superglobals)" variables, which are automatically global and can be called anywhere in the program, such as $_get and $ _request, and so on. They usually come from

K in the last basic article about how to use the array and string in PHP, this time, K decided to make a one-off, to share the three main object-oriented PHP features: encapsulation, inheritance, polymorphism three aspects of knowledge. First, the

The following small series for everyone to bring an article to clarify PHP in Linxu execution of the file permissions method. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a

The following small series for everyone to bring a summary of several ways of Java collection traversal and detailed comparison. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's see it together.

PHP calls the COM component to convert the PPT to a picture. Need to be opened in php.iniExtension=php_com_dotnet.dll com.allow_dcom = True test code is as follows: presentations->open ($addr, False, False, false) or die ("unable To open

In PHP, foreach is used to loop through all the elements of an array. The foreach basic syntax is as follows: foreach ($array _variable as $value) {[Code to execute]} or FOREACH ($array _variable as $key = $value) {[Code to EXE Cute]} In both cases,

PHP focuses on server-side scripting, so you can do everything other CGI programs can do, such as data collection, generating dynamic page content, or sending and receiving cookies. But PHP can do more things. Use three main areas of PHP scripting.

Requests implements most of the functions of the HTTP protocol, it provides features such as keep-alive, connection pooling, cookie persistence, content auto-decompression, HTTP proxy, SSL authentication and many other features. The following

PHP (foreign name: Php:hypertext Preprocessor, Chinese name: "Hypertext Preprocessor") is a common open source scripting language. The grammar absorbs the C language, Java and Perl features, is conducive to learning, widely used, mainly for the

Define and use the PHP extract () function to import variables from the array into the current symbol table. For each element in the array, the key name is used for the variable name, and the key value is used for the variable value. The second

Define and use the Array_diff_ukey () function to compare the key names of two (or more) arrays and return the difference set. Note: This function uses a user-defined function to compare key names! The function compares the key names of two (or more)

SQL Server gets the pinyin initials of the Chinese character string, and the friend needs to refer to it. The code is as follows: CREATE function fgetpy (@str varchar = ") returns varchar ($) AS BEGIN declare @strlen int, @return varchar (500), @ii

This loss has been eaten many times, in the development of the previous SQL code, many with or as a where condition of the query, or even update. Here are examples of the drawbacks of using or, and the ways to improve them. Select f_crm_id from

If you are using eval () in your code now, remember that the mantra "eval () is the Devil". This method accepts arbitrary strings and treats them as JavaScript code. When the problematic code is known in advance (not at runtime), there is no reason

The PHP download flv file or the MP4 file cannot play the FLV playback address that you want to transmit via post or the MP4 play address and then download directly, the download is easy, directly receive post data, post data format similar:

Building a simple interactive website (a) Many of the features of PHP are related to other software or tools. Using the PHP knowledge we've learned so far, we can try to build a Web site that's simple to interact with. Using this process we can

Background: Coding issues have been plagued by program developers, especially in Java, because Java is a cross-platform language that switches between encodings on different platforms. Next, we will introduce the root causes of Java coding problems,

The reverse of the PHP array in an article, "How to sort php arrays," we introduced the sort, asort, and Ksort, which are sorted in ascending order of the array, so if you want to implement the reverse of the arrays? Here's another set of functions

PHP Password Generation class features: 1. Can set the password length. 2. Can set the number of passwords to generate, batch generation. 3. You can specify password rules, letters, numbers, special characters, etc. generatepassword.class.php 1. PHP

When I recently saved a link to a MySQL database using a crawler crawl, I found that when I saved the link using Json_encode, I showed the escape character in the database, which I didn't need to escape, look unclear, and take up storage space. It