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Added javascript minification caching

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This commit is contained in:
Timothy Warren 2011-09-07 17:08:57 -04:00
parent de8e0de77f
commit 444f7ec9d1
2 changed files with 21 additions and 6 deletions
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3
README.md
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@ -7,4 +7,5 @@ A simple set of minifying scripts for CSS and Javascript
1. Figure out your file paths, and set them in css.php and js.php. 1. Figure out your file paths, and set them in css.php and js.php.
2. Add your css and javascript files to groups, in `config/css_groups.php` and `config/js_groups.php` respectively 2. Add your css and javascript files to groups, in `config/css_groups.php` and `config/js_groups.php` respectively
3. Point your CSS links in your HTML to `css.php/g/[group_name]`, and likewise your javascript to `js.php/g/[group_name]` 3. Point your CSS links in your HTML to `css.php/g/[group_name]`, and likewise your javascript to `js.php/g/[group_name]`
4. Enjoy a faster loading website 4. Add a folder named "cache" to your js path
5. Enjoy a faster loading website

24
js.php
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@ -1,6 +1,7 @@
<?php <?php
//Change as needed //Change as needed
$base_path = $_SERVER['DOCUMENT_ROOT']; $base_path = $_SERVER['DOCUMENT_ROOT'];
$cache_file = $base_path.'/cache/cache.js';
require('./config/jshrink.php'); require('./config/jshrink.php');
@ -44,15 +45,18 @@ if(isset($groups[$_GET['g']]))
//Add this page too //Add this page too
$modified[] = filemtime($base_path."js.php"); $modified[] = filemtime($base_path."js.php");
$cache_modified = 0;
//Add the cache file
if(is_file($cache_file))
{
$cache_modified = filemtime($cache_file);
}
//Get the latest modified date //Get the latest modified date
rsort($modified); rsort($modified);
$last_modified = $modified[0]; $last_modified = $modified[0];
if(!isset($_GET['debug']))
{
$js = JShrink::minify($js, array('flaggedComments' => false));
}
$requested_time=(isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) $requested_time=(isset($_SERVER['HTTP_IF_MODIFIED_SINCE']))
? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])
: time(); : time();
@ -63,6 +67,16 @@ if($last_modified === $requested_time)
exit(); exit();
} }
if(!isset($_GET['debug']) && ($cache_modified < $last_modified))
{
$js = trim(JShrink::minify($js, array('flaggedComments' => false)));
file_put_contents($cache_file, $js);
}
else
{
$js = file_get_contents($cache_file);
}
header("Content-Type: application/x-javascript; charset=utf8"); header("Content-Type: application/x-javascript; charset=utf8");
header("Cache-control: public, max-age=691200, must-revalidate"); header("Cache-control: public, max-age=691200, must-revalidate");
header("Last-Modified: ".gmdate('D, d M Y H:i:s', $last_modified)." GMT"); header("Last-Modified: ".gmdate('D, d M Y H:i:s', $last_modified)." GMT");