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With slightly altered URLs, Minify can cache files so they're served directly from the filesystem instead of through PHP. A simple library helps create URLs and clearing the cache. See `static/README.md` for details.
69 lines
1.5 KiB
PHP
69 lines
1.5 KiB
PHP
<?php
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namespace Minify\StaticService;
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/**
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* Build a URI for the static cache
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*
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* @param string $static_uri E.g. "/min/static"
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* @param string $query E.g. "b=scripts&f=1.js,2.js"
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* @param string $type "css" or "js"
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* @return string
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*/
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function build_uri($static_uri, $query, $type) {
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$static_uri = rtrim($static_uri, '/');
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$query = ltrim($query, '?');
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$ext = ".$type";
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if (substr($query, - strlen($ext)) !== $ext) {
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$query .= "&z=$ext";
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}
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$cache_time = get_cache_time();
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return "$static_uri/$cache_time/$query";
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}
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/**
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* Get the name of the current cache directory within static/. E.g. "1467089473"
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*
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* @param bool $auto_create Automatically create the directory if missing?
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* @return null|string null if missing or can't create
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*/
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function get_cache_time($auto_create = true) {
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foreach (scandir(__DIR__) as $entry) {
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if (ctype_digit($entry)) {
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return $entry;
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break;
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}
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}
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if (!$auto_create) {
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return null;
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}
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$time = (string)time();
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if (!mkdir(__DIR__ . "/$time")) {
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return null;
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}
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return $time;
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}
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function flush_cache() {
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$time = get_cache_time(false);
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if ($time) {
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remove_tree(__DIR__ . "/$time");
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}
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}
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function remove_tree($dir) {
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$files = array_diff(scandir($dir), array('.', '..'));
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foreach ($files as $file) {
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is_dir("$dir/$file") ? remove_tree("$dir/$file") : unlink("$dir/$file");
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}
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return rmdir($dir);
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}
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