Post PHP server-side execution - BlitzCoder.net

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JL235	Created : 30 July 2010 Edited : 30 July 2010 System : PSP Vita Language : Flash Post PHP server-side execution Continue executing a PHP script after page has been sent
Imagine this scenario. You have a webpage that a user accesses, it's sent across, and then after the page has been sent you want to execute some expensive PHP code. The issue is that the users browser will continue to say the page is loading because the connection remains open. This code solves this issue. It works by ending the previous HTTP content being sent at the start of your PHP script and then sends a new header which it ends itself later. Library <?php /** * Helper functions for manually starting and then ending the * connection. By using this you can end the session later whilst * the script is still running and so allow server side processing * to continue. * * On the downside this ignores user aborting of loading the page. * * Note that startNewHTTPHeader must be called before headers are sent. / /* * This must be called before headers are sent! * * This ends the default header and starts a new one. * This new one can be ended at any time using endHTTPHeader. / function startNewHTTPHeader() { ob_end_clean(); header("Connection: close\r\n"); header("Content-Encoding: none\r\n"); ignore_user_abort( true ); // optional ob_start(); } /* * Note that this must be called after startNewHTTPHeader! * * Ends the header (and so the connection) setup with the user. * All HTTP and echo'd text will not be sent after calling this. * This allows you to continue performing processing on server side. */ function endHTTPHeader() { // now end connection header( "Content-Length: " . ob_get_length() ); ob_end_flush(); flush(); ob_end_clean(); } ?> --v Example Usage Import it, call startHTTPConnection() at the start of your PHP script and endHTTPConnection() at the end of sending your HTML (before your post-script processing). <?php // import the library include 'httpHeader.php'; startNewHTTPHeader(); ?> <html> <head></head> <body> My Website </body> </html> <?php endHTTPHeader(); // post script code goes here! ?> --v

Comments
Sunday, 01 August 2010, 10:18
HoboBen	Thanks!

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Post PHP server-side execution - BlitzCoder.net