PHP generate static HTML source code and Usage _php tutorial

Recently, some of the development techniques of PHP, found that PHP has a lot of ASP does not have the excellent features, can do some previously unable to complete functions, such as dynamic generation of HTML static pages, to reduce server CPU load, improve user access speed.

We know that PHP read MySQL dynamic display, in the case of large traffic, there will be a lot of performance problems, if renting someone else's virtual host, it will be due to excessive CPU consumption and the CPU is limited, resulting in web pages inaccessible. Here's a way for PHP to dynamically generate HTML, which can greatly reduce the CPU load on the server.

First, set the. htaccess file, convert the dynamically called parameters to the static HTML URL address, for example, the file in the Post directory, forward to the root directory of the wp-post.php file, join the statement similar to:

Rewriterule ^post/([a-z0-9\-]+\.html) $ wp-post.php?$1$2

Then modify the wp-post.php file to include the following PHP code at the beginning of the file:

Copy to ClipboardWhat to refer to: [www.bkjia.com]Ob_start ();
$qstring = Isset ($_server[%26quot; Query_string%26quot;]) ? $_server[%26quot; Query_string%26quot;] :%26quot;%26quot;;
Define (%26quot; Html_file%26quot, $_server[' Document_root '].%26quot;/post/%26quot;. $qstring);

if (file_exists (html_file))
{
$LCFT = Filemtime (html_file);
if ($LCFT + 3600)%26gt; time ())//Determine if the last HTML file was generated more than 1 hours, and if not, output the file contents directly
{
Echo (file_get_contents (html_file));
Exit (0);
}
}

After that is the existing PHP code, and then add the following PHP code at the end of the current code:

Copy to ClipboardWhat to refer to: [www.bkjia.com]Define (%26quot; htmlmeta%26quot;,%26quot;%26lt;! --a real static HTML file created at%26quot;. Date (%26quot; Y-m-d H:i:s%26quot;).%26quot; --%26gt;%26quot;);
$buffer = Ob_get_flush ();
$fp = fopen (html_file,%26quot;w%26quot;);
if ($FP)
{
Fwrite ($FP, $buffer. Htmlmeta);
Fclose ($FP);
}

OK, then look at your static HTML page, if a comment line appears at the end of the page, indicating that a static HTML file has been created successfully.

One application of this method is the one I wrote earlier%26ldquo; WordPress Annual Blog Statistics plug-in%26rdquo; This statistical plug-in due to query more than 10 database, many people visit when there will be a lot of performance problems, using the dynamic generation of HTML technology I introduced, one day query, generate a statistical ranking, Perfectly solves the performance problem of querying the database.

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