When we browse some websites, we often see that some messages are just Updated. if it is manually protected, it will be a very tedious task. However, we can implement update control through program control, which makes it very convenient (I am not going to be lazy ).
Here, I use PHP to achieve this effect. The principle is to arrange the message in reverse order based on the message announcement time, and display the message connection list on a page. each connection corresponds to a message content webpage. The specific control is as follows:
1. First, create a directory under your site and keep the compiled message pages under this directory. in the future, all the message pages will be put here to facilitate protection. The message page is a hypertext method (not to mention HTML ), the first action is "<HTML> <HEAD> <TITLE> message TITLE </TITLE> </HEAD>" (The reason is explained later. it must be in the same line !).
2. write a program to enable active message update (assuming the file name is paixu. php)
The source program is as follows:
<? Php
$ Fp = array ('filename' => '', 'filetime' =>'', 'firstline' => ''); // creates an array to keep the file name and the first line of the file.
$ Dd = dir ('message retained directory'); // read the retained Directory of the message file
$ I = 0;
Clearstatcache ();
While ($ file = $ dd-> read () // read the files in the directory cyclically
{
If (is_file ($ dd-> path. '/'. $ file ))
{
$ Fp [$ I] ['filename'] = $ dd-> path. '/'. $ file; // retain the file name
$ Fr = fopen ($ dd-> path. '/'. $ file, 'r ');
$ Fp [$ I] ['firstline'] = fgetss ($ fr, 60 ); // leave the first line of the file after marking the HTML (that is, why do we need to write the header line of the message as the request pattern)
Fclose ($ fr );
If ($ time = date ('Y m d H: I ', filemtime ($ dd-> path. '/'. $ file) // specifies the file retention time, which is used as the sorting condition.
{
$ Fp [$ I] ['filetime'] = $ time;
}
$ I;
}
}
$ I = count ($ fp); // number of reserved files
$ I-= 4;
For ($ j = 0; $ j <$ I; $ j) // Sort by bubble algorithm
For ($ k = $ I; $ k> $ j; $ k --)
If ($ fp [$ j] ['filetime'] <= $ fp [$ k] ['filetime'])
{
$ C = $ fp [$ j] ['filetime'];
$ Fname = $ fp [$ j] ['filename'];
$ Fcontent = $ fp ['$ j'] ['firstline'];
$ Fp [$ j] ['filetime'] = $ fp [$ k] ['filetime'];
$ Fp [$ j] ['filename'] = $ fp [$ k] ['filename'];
$ Fp [$ j] ['firstline'] = $ fp [$ k] ['firstline'];
$ Fp [$ k] ['filetime'] = $ c; // line30
$ Fp [$ k] ['filename'] = $ fname;
$ Fp [$ k] ['firstline'] = $ fcontent;
}
For ($ I = 0; $ I <= (count ($ fp)-4); $ I) // read the retained file information and connect it accordingly
{
Echo '<tr> <td> ';
Echo '<a href = '. $ fp [$ I] ['filename']. '> '. $ fp [$ I] ['firstline']. '</a> ';
Echo '</td> <td class = font1> ';
Echo '('. $ fp [$ I] ['filetime']. ') <br> \ n ';
Echo '</td> </tr> ';
}
$ Dd-> close ();
?>
3. put the program and directory on your website, and then enter HTTP: // website name/directory/panxu. php in the browser. can you see it?
This program only provides the basic functions, you can increase the control function, as well as page polishing and beautification work, it is up to you.
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