How to call a function with a variable name in PHP programming?

Function fun () { Echo 'fun '; } $ A = 'fun '; $ (); ?> CopyCode The above $ a variable is the fun () function. Calling $ A () is the same as calling fun.   You can also use another method. Call functions in PHP: Mixed call_

JSON interaction between PHP and JavaScript (processing a two-dimensional array ))

I use services_json FOR THE JSON class library of PHP. It has no special advantages or obvious disadvantages. Create File data. php: Include ("JSON. php "); $ DATA = array (Array ('name' => mb_convert_encoding ('old Wang ', 'utf-8', 'gbk'), 'age' =>

Formatting output function in PHP vprintf printf sprintf sscanf

The vprintf () function outputs formatted strings. The number format is the conversion format, starting from the percent sign ("%") to the end of the conversion character. The following possible format values: %-Percentage sign returned% B-binary

The use of extract () functions in PHP

Recently, when reading a cool man's code, I saw a very useful function: extract (). Its main function is to expand the array and use the key name as the variable name, the element value is a variable value, which provides another convenient tool for

Common functions in PHP collection programs

// Obtain the current Script URLFunction get_php_url (){If (! Empty ($ _ server ["request_uri"]) {$ Scriptname = $ _ server ["request_uri"];$ Nowurl = $ scriptname;} Else {$ Scriptname = $ _ server ["php_self"];If (empty ($ _ server ["QUERY_STRING"])

Countdown to the second kill of PHP Products

// The PHP time is calculated in seconds. The JS time is measured in milliseconds. Date_default_timezone_set ('prc ');// Date_default_timezone_set ("Asia/hong_kong"); // Region // Configure the daily activity period$ Starttimestr = "8:10:00 ";$

PHP detection data type

The detection data type is used to detect the data type and determine whether the detected data type belongs to the detection type. If yes, the system returns true. Otherwise, the system returns false. The detection data type is defined as follows:

FAQ about PhP in smth

Q. Why is Chinese content not displayed in the browser when the Apache server is used? A. The new version of Apache (2.0.x or later) sets the default language of the server to the Western European language. This situation. The solution is to modify

Ubuntu Apache configuration access PHP webpage pop-up PHP File Download

From http://www.php8848.com/wp/zh/942.html If you access the PHP webpage in a browser and the page is not displayed, a window is displayed for downloading the PHP file because Apache is not configured and PHP is not known, follow these steps to

Advantages of strtok () function in PHP

Compared with explode (), the strtok () function can control the pace. Cut strings as needed. Its advantages are: 1. multiple separators can be defined at a time. When a function is executed, it is cut by a single separator rather than the entire

Why use the PHP framework?

PHPThere are many reasons to become the world's most popular scripting language: flexibility, ease of use, and so on. However, encoding in PHP or other languages is monotonous and repetitive. At this time, a PHP framework is required to replace the

Tomcat running PHP

Tomcat running PHP XML Code In the tomcat installation directory, comment out the following code in CONF/Web. xml. CGI Org. Apache. Catalina. servlets. cgiservlet Debug 0 Cgipathprefix

A small example of the PHP parent class and interface-reference the PHP video from Han shunping

name = $ name; $ this-> age = $ age; echo "My name is {$ this-> name }, {$ this-> Age} years old this year. \ n ";} public function climb () {echo" I will climb the tree! \ n ";}/ * interface a flying interface provided by bird */interface ifly

A middle school score management system developed by PHP

Preface My blog hasn't been updated for a long time. I recently read the blog of msra Niu, Liu weipeng (www.mindhacks.cn). I feel deeply touched and learned a lot about algorithm learning, thinking methods, career development, and so on, so after

Solution to cross-page transfer failure using session in SESSION-PHP without Cookie

Use session without Cookie Solution to cross-page transfer failure of session in PHP Friends who have used session in PHP may encounter such a problem. Session variables cannot be transferred across pages. This has plagued me for a few days and

PHP and WML knowledge

Abstract The WAP header and tail functions of two discuz segments, which saves some trouble in writing WAP. By the way, repeat WML programming basics. Function wapheader ($ title ){   Header ("Content-Type: text/vnd. WAP. WML; charset = UTF-8 "); /*

PHP constructor and destructor Execution Process

I recently read a book and conducted a small test. The execution process of constructor and destructor is simple. If the same variable appears as an instance of different classes, in PHP, how can we construct and analyze the structure? After testing,

Execute PHP scripts on a regular basis in Linux (detailed instructions on how to use crontab for regular execution)

How to Use crontab regularlyUsage: Crontab [-u user] filecrontab [-u user] {-L |-r |-e} Note: Crontab is used to allow users to run programs at a fixed time or interval. In other words, it is similar to the user's time table. -U user is used to set

Added GD library support for PHP installed in RPM mode in Linux [original]

Recently, I encountered a server with a Fedora Core 5.0 Linux operating system. The originally installed Apache 2.0 and PHP 5.1.2 do not support the GD library, the verification code images and statistical charts generated by the GD library on the

A bloody case caused by a php xml library bug

I am used to using wlw to write offline logs. If I cannot use it, I am not used to it. Today, I applied for a trial space for host2ez, opened my own e-file SITE share with you, and used WordPress 2.7 en, No matter how many users, they should

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