PHP Classes

File: data_valid_example1.php

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  Classes of Jesus M. Castagnetto   Generalized CachedTemplate class   data_valid_example1.php   Download  
File: data_valid_example1.php
Role: ???
Content type: text/plain
Description: Example of external data validation using data timestamp
Class: Generalized CachedTemplate class
General Template Caching class
Author: By
Last change:
Date: 23 years ago
Size: 2,284 bytes


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<?php /* * $Id: datavalid_example1.php,v 1.1 2000/07/18 21:25:45 jesus Exp $ */ // This example demostrates the use of data validation // when the data to be used comes from an external // source. In this case we use the data's timestamp require "./class.FastTemplate.php3"; require "./class.FastTemplateAdaptor.php"; require "./class.CachedTemplate.php"; $ftpl = new CachedTemplate(); $ftpl->init("./templates"); // for benchmarking $start = $ftpl->utime(); // we need this definition first, so the new logic can // detect if the templates have changed. $ftpl->define( array( main => "main.tpl", table => "table.tpl", row => "row.tpl" ) ); // get the timestamp from the data source $data_check = filemtime("./rows.dat"); echo "<hr><b>Example on how to use the is_data_valid() method for when the data sources are external (i.e. a file, a database, etc.). Using the timestamp of the data file in this case: $data_check</b><hr>"; // Check if we can send the cached file // and also check that the data is still valid if ($ftpl->valid_cache_file() && $ftpl->is_data_valid($data_check, "timestamp")) { echo "<B>FROM CACHE</B>\n<BR>"; $ftpl->read_from_cache(); $end = $ftpl->utime(); $runtime = ($end - $start) * 1000; echo "Completed in $runtime miliseconds<BR>\n"; exit; } // Otherwise process the page $ftpl->assign( array( TITLE => "FastTemplate Test") ); // Read the data from the external source, in this case a file $rows = file("./rows.dat"); for ($i=0; $i<count($rows); $i++) { list($number,$bignum) = explode(",",$rows[$i]); $ftpl->assign( array( NUMBER => $number, BIG_NUMBER => $bignum ) ); $ftpl->parse(ROWS,".row"); } $ftpl->parse(MAIN, array("table","main")); // get parsed document $data = $ftpl->getParsedDoc(); echo $data; // for benchmarking $end = $ftpl->utime(); $runtime = ($end - $start) * 1000; echo "Completed in $runtime miliseconds<BR>\n"; // we write the file at the end so this // operation will not be counted in the benchmark // the second parameter is needed for data validation $ftpl->write_to_cache($data, $data_check); ?>