PHP

Defines the algorithm skeleton in an operation, and delays some steps to the subclass, so that the subclass can not change the structure of an algorithm, but define some specific steps of the algorithm inheritance relationship due to its own defects,

Converts an interface of a class to another interface that the customer wants. classes that are originally incompatible and cannot work together can work together. The code is as follows: /*** Adapter mode** Convert an interface of a class to

PHP only sends the HTML document header to the browser using the HTTP protocol to tell the browser how to handle the page. As for the transmitted content, you need to familiarize yourself with the HTTP protocol, PHP is irrelevant. in php, the header

PHP uses the shell background to run the PHP script and obtain the ProcessID code of the script. For more information about php, see. The code is as follows: $ Command = '/usr/bin/php/pub/www/u111/job/Crondo/auto_collector.php &';$ Process =

The ksort () function sorts the array in ascending order by key name and retains the original key for the array value. The second optional parameter contains an additional sorting flag. Ksort () definition and usage The ksort () function sorts the

Empty () only detects variables, and any non-variables will cause parsing errors. In other words, the following statement does not work: empty (addslashes ($ name )) Empty-check whether a variable is empty Report a bug description Bool empty (mixed

Using the serialize () function and unserialize () function, the usage of these two functions is really out of the box. one is for serialization storage, and the other is for serialization recovery, which is very convenient today, I am doing

The description of ob_flushflush in the manual is to refresh the output buffer and must be used together. Therefore, many people may be confused that the description of ob_flush/flush in the manual is to refresh the output buffer, it also needs to

PHP Object-Oriented Learning Objectives: fully understand the three main features of abstraction, encapsulation, inheritance, and multi-state image targeting: encapsulation, inheritance, and Polymorphism. First of all, a brief understanding of

The PHPfgetcsv () function reads a row from the file pointer and parses the CSV field. Similar to PHPfgets (), the difference is that PHPfgetcsv () parses the rows read and finds fields in CSV format, and then returns an array containing these

This article introduces the usage of Content-disposition in phpheader in detail. if you need to know the header usage, refer to Content-disposition as an extension of the MIME protocol, the MIME protocol indicates how the MIME user agent displays

Simple factory mode instance code in PHP. for php-like learning, refer to the simple factory mode below: ① Abstract base class: Class defines abstract methods for implementation in sub-classes ② Inherit from the subclass of the abstract base class:

Author: redfox mail: ask4more@163.net using text for data processing Home: http://netnote.oso.com.cn I believe that the free PHP space applied for on the internet is generally unavailable for beginners, so one of our solutions to data processing is

Counter detailed design overview: This design allows you to design a count analysis program based on this counter to analyze page access and ip address access times and form a report. I. database design The database uses mysql Related Files:

PHP automatic update news DIY when we browse some websites, we often see some news that is just Updated. if it is manually maintained, it will be a very tedious task. However, we can use programs to control the update operations, which makes it very

Example of a text message book in php (3) I described guest. php and edit. php in the last two sections. note the differences between php and html: Php is usually --> (1) (2) Echo ("zihanonline "); ?> (3)

This section describes the basic syntax of regular expressions in PHP: delimiters and atoms. The content includes the definition of delimiters and the definition and composition of atoms. in this section, we will introduce the basic syntax of

Because I wrote an article a few days ago and used the php-excel-reader class to import the excel content. By the way, some excel export problems may occur. you may want to know this because I wrote an article a few days ago, use the

Mt_rand () is four times faster than rand (). many old libc random number generators have some uncertain and unknown features and are very slow. The rand () function of PHP uses the libc random number generator by default. The mt_rand () function is

In PHP programming, recursive calls are often used with static variables. For the meanings of static variables, refer to the PHP Manual. we hope the following code will be more conducive to understanding recursive and static variables. The code is