Cache Enabler – WordPress Cache - Version 1.0.8

Version Description

  • Added support for srcset in WP 4.4
  • Improved encoding (utf8)
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Release Info

Developer keycdn
Plugin Icon 128x128 Cache Enabler – WordPress Cache
Version 1.0.8
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Code changes from version 1.0.7 to 1.0.8

Files changed (3) hide show
  1. cache-enabler.php +2 -2
  2. inc/cache_enabler_disk.class.php +52 -4
  3. readme.txt +21 -7
cache-enabler.php CHANGED
@@ -6,12 +6,12 @@ Description: Simple and fast WordPress disk caching plugin.
6
  Author: KeyCDN
7
  Author URI: https://www.keycdn.com
8
  License: GPLv2 or later
9
- Version: 1.0.7
10
  */
11
 
12
  /*
13
- Copyright (C) 2011-2015 Sergej Müller
14
  Copyright (C) 2015 KeyCDN
 
15
 
16
  This program is free software; you can redistribute it and/or modify
17
  it under the terms of the GNU General Public License as published by
6
  Author: KeyCDN
7
  Author URI: https://www.keycdn.com
8
  License: GPLv2 or later
9
+ Version: 1.0.8
10
  */
11
 
12
  /*
 
13
  Copyright (C) 2015 KeyCDN
14
+ Copyright (C) 2011-2015 Sergej Müller
15
 
16
  This program is free software; you can redistribute it and/or modify
17
  it under the terms of the GNU General Public License as published by
inc/cache_enabler_disk.class.php CHANGED
@@ -205,6 +205,7 @@ final class Cache_Enabler_Disk {
205
  // check webp and deliver gzip webp file if support
206
  if ( $http_accept && ( strpos($http_accept, 'webp') !== false ) && is_readable( self::_file_webp_gzip() ) ) {
207
  header('Content-Encoding: gzip');
 
208
  readfile( self::_file_webp_gzip() );
209
  exit;
210
  }
@@ -212,6 +213,7 @@ final class Cache_Enabler_Disk {
212
  // check encoding and deliver gzip file if support
213
  if ( $http_accept_encoding && ( strpos($http_accept_encoding, 'gzip') !== false ) ) {
214
  header('Content-Encoding: gzip');
 
215
  readfile( self::_file_gzip() );
216
  exit;
217
  }
@@ -498,7 +500,7 @@ final class Cache_Enabler_Disk {
498
  * convert to webp
499
  *
500
  * @since 1.0.1
501
- * @change 1.0.1
502
  *
503
  * @return string converted HTML file
504
  */
@@ -506,7 +508,7 @@ final class Cache_Enabler_Disk {
506
  private static function _convert_webp($data) {
507
 
508
  $dom = new DOMDocument();
509
- $dom->loadHTML($data);
510
 
511
  $imgs = $dom->getElementsByTagName("img");
512
 
@@ -516,6 +518,10 @@ final class Cache_Enabler_Disk {
516
  $src_webp = self::_convert_webp_src($src);
517
  if ($src != $src_webp) {
518
  $img->setAttribute('src' , $src_webp);
 
 
 
 
519
  }
520
 
521
  }
@@ -538,12 +544,12 @@ final class Cache_Enabler_Disk {
538
 
539
 
540
  /**
541
- * convert to webp source
542
  *
543
  * @since 1.0.1
544
  * @change 1.0.6
545
  *
546
- * @return string converted webp source
547
  */
548
 
549
  private static function _convert_webp_src($src) {
@@ -568,4 +574,46 @@ final class Cache_Enabler_Disk {
568
  return $src;
569
  }
570
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
571
  }
205
  // check webp and deliver gzip webp file if support
206
  if ( $http_accept && ( strpos($http_accept, 'webp') !== false ) && is_readable( self::_file_webp_gzip() ) ) {
207
  header('Content-Encoding: gzip');
208
+ //header('Content-Type: text/html; charset=UTF-8');
209
  readfile( self::_file_webp_gzip() );
210
  exit;
211
  }
213
  // check encoding and deliver gzip file if support
214
  if ( $http_accept_encoding && ( strpos($http_accept_encoding, 'gzip') !== false ) ) {
215
  header('Content-Encoding: gzip');
216
+ //header('Content-Type: text/html; charset=UTF-8');
217
  readfile( self::_file_gzip() );
218
  exit;
219
  }
500
  * convert to webp
501
  *
502
  * @since 1.0.1
503
+ * @change 1.0.8
504
  *
505
  * @return string converted HTML file
506
  */
508
  private static function _convert_webp($data) {
509
 
510
  $dom = new DOMDocument();
511
+ @$dom->loadHTML(mb_convert_encoding($data, 'HTML-ENTITIES', 'UTF-8'));
512
 
513
  $imgs = $dom->getElementsByTagName("img");
514
 
518
  $src_webp = self::_convert_webp_src($src);
519
  if ($src != $src_webp) {
520
  $img->setAttribute('src' , $src_webp);
521
+
522
+ // convert srcset attributes
523
+ $srcset = $img->getAttribute('srcset');
524
+ $img->setAttribute('srcset' , self::_convert_webp_srcset($srcset));
525
  }
526
 
527
  }
544
 
545
 
546
  /**
547
+ * convert src to webp source
548
  *
549
  * @since 1.0.1
550
  * @change 1.0.6
551
  *
552
+ * @return string converted src webp source
553
  */
554
 
555
  private static function _convert_webp_src($src) {
574
  return $src;
575
  }
576
 
577
+
578
+ /**
579
+ * convert srcset to webp source
580
+ *
581
+ * @since 1.0.8
582
+ * @change 1.0.8
583
+ *
584
+ * @return string converted srcset webp source
585
+ */
586
+
587
+ private static function _convert_webp_srcset($srcset) {
588
+
589
+ $sizes = explode(', ', $srcset);
590
+
591
+ for ($i=0; $i<count($sizes); $i++) {
592
+
593
+ if ( strpos($sizes[$i], 'wp-content') !== false ) {
594
+
595
+ $src_webp = str_replace('.jpg', '.webp', $sizes[$i]);
596
+ $src_webp = str_replace('.png', '.webp', $src_webp);
597
+
598
+ $sizeParts = explode(' ', $src_webp);
599
+ $parts = explode('/wp-content/uploads', $sizeParts[0]);
600
+ $relative_path = $parts[1];
601
+
602
+ $upload_path = wp_upload_dir();
603
+ $base_dir = $upload_path['basedir'];
604
+
605
+ // check if relative path is not empty and file exists
606
+ if ( !empty($relative_path) && file_exists($base_dir.$relative_path) ) {
607
+ $sizes[$i] = $src_webp;
608
+ }
609
+
610
+ }
611
+
612
+ }
613
+
614
+ $srcset = implode(', ', $sizes);
615
+
616
+ return $srcset;
617
+ }
618
+
619
  }
readme.txt CHANGED
@@ -1,8 +1,8 @@
1
- === Cache Enabler - WordPress Caching ===
2
  Contributors: keycdn
3
- Tags: cache, caching, performance
4
  Requires at least: 4.1
5
- Tested up to: 4.3
6
  Stable tag: trunk
7
  License: GPLv2 or later
8
  License URI: http://www.gnu.org/licenses/gpl-2.0.html
@@ -15,8 +15,8 @@ A lightweight caching plugin for WordPress that makes your website faster by gen
15
 
16
  == Description ==
17
 
18
-
19
- The Cache Enabler plugin creates static HTML files and stores them on the servers disk. The web server will deliver the static HTML file and avoids the resource intensive backend processes (core, plugins and database). This will improve the performance of your WordPress installation.
20
 
21
 
22
  = Features =
@@ -27,11 +27,21 @@ The Cache Enabler plugin creates static HTML files and stores them on the server
27
  * WordPress multisite support
28
  * Custom Post Type support
29
  * Expiry Directive
 
30
  * WebP Support (when combined with [Optimus](https://optimus.io/en/ "Optimus"))
31
  * HTTP/2 Focused
32
 
33
  > Cache Enabler is the first WP plugin to allow you to serve WebP images without JavaScript. WebP is a new image format that provides lossless and lossy compression for images on the web. WebP lossless images are [26% smaller](https://developers.google.com/speed/webp/docs/webp_lossless_alpha_study#results "webp lossless alpha study") in size compared to PNGs.
34
 
 
 
 
 
 
 
 
 
 
35
  = Support =
36
  Just [contact us](https://www.keycdn.com/contacts "Support Request") directly to get support on this plugin.
37
 
@@ -42,7 +52,7 @@ Just [contact us](https://www.keycdn.com/contacts "Support Request") directly to
42
 
43
 
44
  = Website =
45
- * [Cache Enabler Documentation](https://www.keycdn.com/support/wordpress-cache-enabler-plugin/ "Cache Enabler Documentation")
46
 
47
 
48
  = Maintainer =
@@ -52,11 +62,15 @@ Just [contact us](https://www.keycdn.com/contacts "Support Request") directly to
52
 
53
 
54
  = Credits =
55
- This plugin is partially based on the Cachify plugin developed by [Sergej Müller](https://wordpress.org/plugins/cachify/ "Author Sergej Müller").
56
 
57
 
58
  == Changelog ==
59
 
 
 
 
 
60
  = 1.0.7 =
61
  * Added cache behavior option for new posts
62
  * Improved metainformation of the signature
1
+ === Cache Enabler - WordPress Cache ===
2
  Contributors: keycdn
3
+ Tags: cache, caching, wordpress cache, performance, gzip, webp, http2
4
  Requires at least: 4.1
5
+ Tested up to: 4.4
6
  Stable tag: trunk
7
  License: GPLv2 or later
8
  License URI: http://www.gnu.org/licenses/gpl-2.0.html
15
 
16
  == Description ==
17
 
18
+ = WordPress Cache Engine =
19
+ The Cache Enabler plugin creates static HTML files and stores them on the servers disk. The web server will deliver the static HTML file and avoids the resource intensive backend processes (core, plugins and database). This WordPress cache engine will improve the performance of your website.
20
 
21
 
22
  = Features =
27
  * WordPress multisite support
28
  * Custom Post Type support
29
  * Expiry Directive
30
+ * Support of *304 Not Modified* if the page has not modified since last cached
31
  * WebP Support (when combined with [Optimus](https://optimus.io/en/ "Optimus"))
32
  * HTTP/2 Focused
33
 
34
  > Cache Enabler is the first WP plugin to allow you to serve WebP images without JavaScript. WebP is a new image format that provides lossless and lossy compression for images on the web. WebP lossless images are [26% smaller](https://developers.google.com/speed/webp/docs/webp_lossless_alpha_study#results "webp lossless alpha study") in size compared to PNGs.
35
 
36
+
37
+ = How does the caching work? =
38
+ This plugin requires minimal setup time and allows you to easily take advantage of the benefits that come from using Wordpress caching.
39
+
40
+ The Wordpress Cache Enabler has the ability to create 2 cached files. One is plain HTML and the other version is gzipped (gzip level 9). These static files are then used to deliver content faster to your users directly via PHP without any database lookups or gzipping as the files are already pre-compressed. You can use our [advanced configuration snippets](https://www.keycdn.com/support/wordpress-cache-enabler-plugin/#advanced-configuration "WP cache config snippet") to even *bypass PHP* calls required to fetch the static HTML files.
41
+
42
+ When combined with Optimus, the Wordpress Cache Enabler allows you to easily deliver WebP images. The plugin will check your wp-content/uploads directory for any JPG or PNG images that have an equivalent WebP file. If there is, the URI of these image will be cached in a WebP static file by Cache Enabler. It is not required for all images to be converted to WebP when the "Create an additional cached version for WebP image support" option is enabled. This will not break any images that are not in WebP format. The plugin will deliver images that do have a WebP equivalent and will fall back to the JPG or PNG format for images that don't.
43
+
44
+
45
  = Support =
46
  Just [contact us](https://www.keycdn.com/contacts "Support Request") directly to get support on this plugin.
47
 
52
 
53
 
54
  = Website =
55
+ * [WordPress Cache Enabler - Documentation](https://www.keycdn.com/support/wordpress-cache-enabler-plugin/ "WordPress Cache Enabler - Documentation")
56
 
57
 
58
  = Maintainer =
62
 
63
 
64
  = Credits =
65
+ This WordPress cache plugin is partially based on Cachify developed by [Sergej Müller](https://wordpress.org/plugins/cachify/ "Author Sergej Müller").
66
 
67
 
68
  == Changelog ==
69
 
70
+ = 1.0.8 =
71
+ * Added support for srcset in WP 4.4
72
+ * Improved encoding (utf8)
73
+
74
  = 1.0.7 =
75
  * Added cache behavior option for new posts
76
  * Improved metainformation of the signature