css-utilities.php — WP Fastest Cache – WordPress Cache Plugin 1.0.7

wp-fastest-cache / inc / css-utilities.php

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admin-toolbar.php 5 years ago admin.php 3 years ago cache.php 3 years ago cdn.php 3 years ago clearing-specific-pages.php 3 years ago cli.php 3 years ago column.php 6 years ago css-utilities.php 3 years ago index.html 11 years ago js-utilities.php 3 years ago preload.php 3 years ago single-preload.php 3 years ago wp-polls.php 9 years ago

css-utilities.php

756 lines

1	<?php
2	class CssUtilities{
3	private $html = "";
4	private $tags = array();
5	private $except = "";
6	private $wpfc;
7
8	public function __construct($wpfc, $html){
9
10	$this->wpfc = $wpfc;
11	$this->html = $html;
12	$this->set_except_tags();
13	$this->set_tags();
14	$this->tags_reorder();
15	}
16
17	public function check_exclude($css_url = false){
18	if($css_url){
19	// to exclude the css source of elementor which is /elementor/css/post-[number].css to avoid increasing the size of minified sources
20	if(preg_match("/\/elementor\/css\/post-\d+\.css/i", $css_url)){
21	return true;
22	}
23
24	foreach((array)$this->wpfc->exclude_rules as $key => $value){
25
26	if(isset($value->prefix) && $value->prefix && $value->type == "css"){
27	if($value->prefix == "contain"){
28	$preg_match_rule = preg_quote($value->content, "/");
29	}
30
31	if(preg_match("/".$preg_match_rule."/i", $css_url)){
32	return true;
33	}
34	}
35	}
36	}
37	}
38
39	public function combineCss(){
40	$all = array();
41	$group = array();
42
43	foreach ($this->tags as $key => $value) {
44	if(preg_match("/<link/i", $value["text"])){
45
46	if($this->except){
47	if(strpos($this->except, $value["text"]) !== false){
48	array_push($all, $group);
49	$group = array();
50	continue;
51	}
52	}
53
54	if(!$this->checkInternal($value["text"])){
55	array_push($all, $group);
56	$group = array();
57	continue;
58	}
59
60	if($this->check_exclude($value["text"])){
61	array_push($all, $group);
62	$group = array();
63	continue;
64	}
65
66	if(count($group) > 0){
67	if($group[0]["media"] == $value["media"]){
68	array_push($group, $value);
69	}else{
70	array_push($all, $group);
71	$group = array();
72	array_push($group, $value);
73	}
74	}else{
75	array_push($group, $value);
76	}
77
78	if($value === end($this->tags)){
79	array_push($all, $group);
80	}
81
82
83	}
84
85	if(preg_match("/<style/i", $value["text"])){
86	if(count($group) > 0){
87	array_push($all, $group);
88	$group = array();
89	}
90	}
91	}
92
93	if(count($all) > 0){
94	$all = array_reverse($all);
95
96	foreach ($all as $group_key => $group_value) {
97	if(count($group_value) > 0){
98
99	$combined_css = "";
100	$combined_name = $this->wpfc->create_name($group_value);
101	$combined_link = "";
102
103	$cachFilePath = $this->wpfc->getWpContentDir("/cache/wpfc-minified")."/".$combined_name;
104	$cssLink = $this->convert_path_to_link($cachFilePath);
105
106	if(is_dir($cachFilePath)){
107	if($cssFiles = @scandir($cachFilePath, 1)){
108	$combined_link = '<link rel="stylesheet" type="text/css" href="'.$cssLink."/".$cssFiles[0].'" media="'.$group_value[0]["media"].'"/>';
109
110	if($css_content = $this->wpfc->read_file($cssLink."/".$cssFiles[0])){
111
112	$css_content = $this->apply_filter($css_content);
113
114	$combined_link = $this->to_inline($combined_link, $css_content);
115	}
116	}
117	}else{
118	$combined_css = $this->create_content(array_reverse($group_value));
119	$combined_css = $this->fix_charset($combined_css);
120
121	if($combined_css){
122
123	if($this->wpfc->cdn){
124	$combined_css = preg_replace_callback("/(url)$([^$]+)\)/i", array($this->wpfc, 'cdn_replace_urls'), $combined_css);
125	}
126
127
128	$this->wpfc->createFolder($cachFilePath, $combined_css, "css");
129
130	if(is_dir($cachFilePath)){
131	if($cssFiles = @scandir($cachFilePath, 1)){
132	$combined_link = '<link rel="stylesheet" type="text/css" href="'.$cssLink."/".$cssFiles[0].'" media="'.$group_value[0]["media"].'"/>';
133
134	$combined_css = $this->apply_filter($combined_css);
135
136	$combined_link = $this->to_inline($combined_link, $combined_css);
137	}
138	}
139	}
140	}
141
142	if($combined_link){
143	foreach (array_reverse($group_value) as $tag_key => $tag_value) {
144	$text = substr($this->html, $tag_value["start"], ($tag_value["end"]-$tag_value["start"] + 1));
145
146	if($tag_key > 0){
147	$this->html = substr_replace($this->html, "<!-- ".$text." -->", $tag_value["start"], ($tag_value["end"] - $tag_value["start"] + 1));
148	}else{
149	$this->html = substr_replace($this->html, "<!-- ".$text." -->"."\n".$combined_link, $tag_value["start"], ($tag_value["end"] - $tag_value["start"] + 1));
150
151	}
152	}
153	}
154	}
155	}
156	}
157
158	return $this->html;
159	}
160
161	public function create_content($group_value){
162	$combined_css = "";
163	foreach ($group_value as $tag_key => $tag_value) {
164	$minifiedCss = $this->minify($tag_value["href"]);
165
166	if($minifiedCss){
167	$combined_css = $minifiedCss["cssContent"].$combined_css;
168	}else{
169	return false;
170	}
171	}
172
173	return $combined_css;
174	}
175
176	public function minifyCss(){
177	$data = $this->html;
178
179	if(count($this->tags) > 0){
180	foreach (array_reverse($this->tags) as $key => $value) {
181	$text = substr($data, $value["start"], ($value["end"]-$value["start"] + 1));
182
183	if(preg_match("/<link/i", $text)){
184	if($href = $this->checkInternal($text)){
185	if($this->check_exclude($href)){
186	continue;
187	}
188
189	$minifiedCss = $this->minify($href);
190
191	if($minifiedCss){
192	$prefixLink = str_replace(array("http:", "https:"), "", $minifiedCss["url"]);
193	$text = preg_replace("/href\=[\"\'][^\"\']+[\"\']/", "href='".$prefixLink."'", $text);
194
195
196	$minifiedCss["cssContent"] = $this->apply_filter($minifiedCss["cssContent"]);
197
198
199	$text = $this->to_inline($text, $minifiedCss["cssContent"]);
200
201	$this->html = substr_replace($this->html, $text, $value["start"], ($value["end"] - $value["start"] + 1));
202
203	}
204
205	}
206	}
207	}
208	}
209
210	return $this->html;
211	}
212
213	public function to_inline($link, $css_content){
214	if(!isset($GLOBALS["wp_fastest_cache_options"]->wpFastestCacheRenderBlocking)){
215	return $link;
216	}
217
218	if(!preg_match("/\smedia\=[\'\"]all[\'\"]/i", $link)){
219	return $link;
220	}
221
222	if(isset($css_content["11000"])){
223	return $link;
224	}
225
226	$link = "<style>".$css_content."</style>";
227
228	return $link;
229	}
230
231	public function tags_reorder(){
232	$sorter = array();
233	$ret = array();
234
235	foreach ($this->tags as $ii => $va) {
236	$sorter[$ii] = $va['start'];
237	}
238
239	asort($sorter);
240
241	foreach ($sorter as $ii => $va) {
242	$ret[$ii] = $this->tags[$ii];
243	}
244
245	$this->tags = $ret;
246	}
247
248	public function set_except_tags(){
249	$comment_tags = $this->find_tags("<!--", "-->");
250
251	foreach ($comment_tags as $key => $value) {
252	$this->except = $value["text"].$this->except;
253	}
254
255	// to execute if html contains <noscript> tag
256	if(preg_match("/<noscript/i", $this->html)){
257	$noscript_tags = $this->find_tags("<noscript", "</noscript>");
258
259	foreach ($noscript_tags as $key => $value) {
260	$this->except = $value["text"].$this->except;
261
262	if(isset($GLOBALS["wp_fastest_cache_options"]->wpFastestCacheLazyLoad)){
263	// to set noscript for lazy load
264	// <noscript><img src="http://google.com/image.jpg"></noscript>
265	$GLOBALS["wp_fastest_cache"]->noscript = $value["text"].$GLOBALS["wp_fastest_cache"]->noscript;
266	}
267	}
268	}
269
270	// $("head").append( "<link rel='stylesheet' id='ms-fonts' href='//fonts.googleapis.com/css?family=Exo+2:regular' type='text/css' media='all' />" );
271	$script_tags = $this->find_tags("<script", "</script>");
272
273	foreach ($script_tags as $key => $value) {
274	$link_tags = $this->find_tags("<link", ">", $value["text"]);
275
276	if(count($link_tags) > 0){
277	$this->except = $value["text"].$this->except;
278	}
279	}
280	}
281
282	public function set_tags(){
283	$style_tags = $this->find_tags("<style", "</style>");
284	$this->tags = array_merge($this->tags, $style_tags);
285
286	$link_tags = $this->find_tags("<link", ">");
287
288	foreach ($link_tags as $key => $value) {
289	//<link rel='stylesheet' id='avada-dynamic-css-css' href='/wp-content/uploads/avada-styles/avada-9.css?timestamp=1485306359&ver=4.7.2' type='text/css' media='all' />
290	if(preg_match("/avada-dynamic-css-css/", $value["text"])){
291	continue;
292	}
293
294	preg_match("/media\=[\'\"]([^\'\"]+)[\'\"]/", $value["text"], $media);
295	preg_match("/href\=[\'\"]([^\'\"]+)[\'\"]/", $value["text"], $href);
296
297	$media[1] = (isset($media[1]) && $media[1]) ? trim($media[1]) : "";
298	$value["media"] = (isset($media[1]) && $media[1]) ? $media[1] : "all";
299
300	if(isset($href[1])){
301	$href[1] = trim($href[1]);
302	$value["href"] = (isset($href[1]) && $href[1]) ? $href[1] : "";
303
304	if(preg_match("/href\s*\=/i", $value["text"])){
305	if(preg_match("/rel\s\=\s[\'\"]\sstylesheet\s[\'\"]/i", $value["text"])){
306	array_push($this->tags, $value);
307	}
308	}
309	}
310	}
311	}
312
313	public function find_tags($start_string, $end_string, $source = false){
314	if($source){
315	$data = $source;
316	}else{
317	$data = $this->html;
318	}
319
320	$list = array();
321	$start_index = false;
322	$end_index = false;
323
324	for($i = 0; $i < strlen( $data ); $i++) {
325	if(substr($data, $i, strlen($start_string)) == $start_string){
326	$start_index = $i;
327	}
328
329	if($start_index && $i > $start_index){
330	if(substr($data, $i, strlen($end_string)) == $end_string){
331	$end_index = $i + strlen($end_string)-1;
332	$text = substr($data, $start_index, ($end_index-$start_index + 1));
333
334
335	array_push($list, array("start" => $start_index, "end" => $end_index, "text" => $text));
336
337
338	$start_index = false;
339	$end_index = false;
340	}
341	}
342	}
343
344	return $list;
345	}
346
347	public function minify($url){
348	$this->url = $url;
349	$md5 = $this->wpfc->create_name($url);
350
351	$cachFilePath = $this->wpfc->getWpContentDir("/cache/wpfc-minified")."/".$md5;
352	$cssLink = $this->convert_path_to_link($cachFilePath);
353
354	if(is_dir($cachFilePath)){
355	if($cssFiles = @scandir($cachFilePath, 1)){
356	if($cssContent = $this->file_get_contents_curl($cssLink."/".$cssFiles[0])){
357
358
359	$cssContent = $this->apply_filter($cssContent);
360
361
362	return array("cachFilePath" => $cachFilePath, "cssContent" => $cssContent, "url" => $cssLink."/".$cssFiles[0], "realUrl" => $url);
363	}else{
364	return false;
365	}
366	}
367	}else{
368	if($cssContent = $this->file_get_contents_curl($url, "?v=".time())){
369
370	$original_content_length = strlen($cssContent);
371
372	if(isset($this->wpfc->options->wpFastestCacheMinifyCss) && $this->wpfc->options->wpFastestCacheMinifyCss){
373	$cssContent = $this->_process($cssContent);
374	}
375
376	$cssContent = $this->fixPathsInCssContent($cssContent, $url);
377
378	$cssContent = $this->apply_filter($cssContent);
379
380	if(isset($this->wpfc->options->wpFastestCacheMinifyCssPowerFul) && $this->wpfc->options->wpFastestCacheMinifyCssPowerFul){
381	if(class_exists("WpFastestCachePowerfulHtml")){
382	$powerful_html = new WpFastestCachePowerfulHtml();
383	$cssContent = $powerful_html->minify_css($cssContent);
384	}
385	}
386
387
388	$cssContent = str_replace("\xEF\xBB\xBF", '', $cssContent);
389
390	// If the content is empty, the file is not created. This breaks "combine css" feature
391	if(strlen($cssContent) == 0 && $original_content_length > 0){
392	return array("cssContent" => "", "url" => $url);
393	}
394
395	if(!is_dir($cachFilePath)){
396	if($this->wpfc->cdn){
397	$cssContent = preg_replace_callback("/(url)$([^$]+)\)/i", array($this->wpfc, 'cdn_replace_urls'), $cssContent);
398	}
399
400	$this->wpfc->createFolder($cachFilePath, $cssContent, "css");
401	}
402
403	if($cssFiles = @scandir($cachFilePath, 1)){
404	return array("cachFilePath" => $cachFilePath, "cssContent" => $cssContent, "url" => $cssLink."/".$cssFiles[0], "realUrl" => $url);
405	}
406	}
407	}
408	return false;
409	}
410
411	public function fixPathsInCssContent($css, $url){
412	$this->url_for_fix = $url;
413
414	$css = preg_replace("/@import\s+[\"\']([^\;\"\'\)]+)[\"\'];/", "@import url($1);", $css);
415	$css = preg_replace_callback("/url$([^$\n]*)\)/", array($this, 'newImgPath'), $css);
416	$css = preg_replace_callback('/@import\s+url$([^$]+)\);/i', array($this, 'fix_import_rules'), $css);
417	$css = $this->fix_charset($css);
418
419	return $css;
420	}
421
422	public function svg_to_file($source){
423	return $source;
424
425	if(preg_match("/base64\,/", $source)){
426	$is_base64 = true;
427	}else{
428	$is_base64 = false;
429	}
430
431	if(preg_match("/\,(%3Csvg\|<svg)/", $source) \|\| $is_base64){
432	$source = preg_replace("/\"\|\'/", "", $source);
433	$source = preg_replace("/data[^\,]+\,/", "", $source);
434
435	if($is_base64){
436	$source = base64_decode($source);
437	}else{
438	$source = rawurldecode($source);
439	}
440
441
442	$md5 = $this->wpfc->create_name($source);
443	$cachFilePath = $this->wpfc->getWpContentDir("/cache/wpfc-minified")."/svg-".$md5;
444
445	$this->wpfc->createFolder($cachFilePath, $source, "svg");
446
447	if(is_dir($cachFilePath)){
448	if($cssFiles = @scandir($cachFilePath, 1)){
449	$source = $this->convert_path_to_link($cachFilePath."/".$cssFiles[0]);
450	}
451	}
452	}
453
454	return $source;
455	}
456
457	public function woff_to_file($source){
458	return $source;
459
460	// url("data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAA")
461	if(preg_match("/base64\,/", $source)){
462	$is_base64 = true;
463	}else{
464	$is_base64 = false;
465	}
466
467	if($is_base64){
468	// not to use preg_match() for the speed
469	$source = strstr($source, 'base64,');
470	$source = str_replace("base64,", "", $source);
471	$source = trim($source);
472	$source = str_replace(array("'", '"'), "", $source);
473
474	$md5 = $this->wpfc->create_name($source);
475	$cachFilePath = $this->wpfc->getWpContentDir("/cache/wpfc-minified")."/woff-".$md5;
476
477	$this->wpfc->createFolder($cachFilePath, $source, "woff");
478
479	if(is_dir($cachFilePath)){
480	if($cssFiles = @scandir($cachFilePath, 1)){
481	$link = $this->convert_path_to_link($cachFilePath."/".$cssFiles[0]);
482
483	return $link;
484	}
485	}
486	}
487
488	return $source;
489	}
490
491
492	public function newImgPath($matches){
493	$matches[1] = trim($matches[1]);
494
495	if(preg_match("/data\:font\/opentype/i", $matches[1])){
496	$matches[1] = $matches[1];
497	}else if(preg_match("/data\:application\/x-font-woff/i", $matches[1])){
498	$matches[1] = $this->woff_to_file($matches[1]);
499	}else if(preg_match("/data\:image\/svg\+xml/i", $matches[1])){
500	$matches[1] = $this->svg_to_file($matches[1]);
501	}else{
502	$matches[1] = str_replace(array("\"","'"), "", $matches[1]);
503	$matches[1] = trim($matches[1]);
504
505	if(!$matches[1]){
506	$matches[1] = "";
507	}else if(preg_match("/^\#/", $matches[1])){
508	$matches[1] = $matches[1];
509	}else if(preg_match("/^(\/\/\|http\|\/\/fonts\|data:image\|data:application)/", $matches[1])){
510	if(preg_match("/fonts\.googleapis\.com/", $matches[1])){ // for safari browser
511	$matches[1] = '"'.$matches[1].'"';
512	}else{
513	$matches[1] = $matches[1];
514	}
515	}else if(preg_match("/^\//", $matches[1])){
516	$homeUrl = str_replace(array("http:", "https:"), "", home_url());
517	$matches[1] = $homeUrl.$matches[1];
518	}else if(preg_match("/^\.\/.+/i", $matches[1])){
519	//$matches[1] = str_replace("./", get_template_directory_uri()."/", $matches[1]);
520	$matches[1] = str_replace("./", dirname($this->url_for_fix)."/", $matches[1]);
521	}else if(preg_match("/^(?P<up>(\.\.\/)+)(?P<name>.+)/", $matches[1], $out)){
522	$count = strlen($out["up"])/3;
523	$url = dirname($this->url);
524	for($i = 1; $i <= $count; $i++){
525	$url = substr($url, 0, strrpos($url, "/"));
526	}
527	$url = str_replace(array("http:", "https:"), "", $url);
528	$matches[1] = $url."/".$out["name"];
529	}else{
530	$url = str_replace(array("http:", "https:"), "", dirname($this->url));
531	$matches[1] = $url."/".$matches[1];
532	}
533	}
534
535	return "url(".$matches[1].")";
536	}
537
538	public function apply_filter($content){
539	return apply_filters('wpfc_css_content', $content, null, null);
540	}
541
542	public function fix_charset($css){
543	preg_match_all('/@charset[^\;]+\;/i', $css, $charsets);
544	if(count($charsets[0]) > 0){
545	$css = preg_replace('/@charset[^\;]+\;/i', "", $css);
546	foreach($charsets[0] as $charset){
547	$css = $charset."\n".$css;
548	}
549	}
550	return $css;
551	}
552
553	public function fix_import_rules($matches){
554	if($this->is_internal_css($matches[1])){
555	if($cssContent = $this->file_get_contents_curl($matches[1], "?v=".time())){
556	$tmp_url = $this->url;
557	$this->url = $matches[1];
558	$cssContent = $this->fixPathsInCssContent($cssContent, $matches[1]);
559	$this->url = $tmp_url;
560
561	// to minify again because of the @import css sources
562	if(isset($this->wpfc->options->wpFastestCacheMinifyCss) && $this->wpfc->options->wpFastestCacheMinifyCss){
563	$cssContent = $this->_process($cssContent);
564	}
565
566	return $cssContent;
567	}
568	}
569
570	return $matches[0];
571	}
572
573	protected $_inHack = false;
574
575	protected function _process($css){
576	$css = preg_replace("/^\s+/m", "", ((string) $css));
577	$css = str_replace("\r", "", $css);
578
579	$css = preg_replace_callback('@\\s/\\([\\s\\S]?)\\/\\s*@'
580	,array($this, '_commentCB'), $css);
581
582	//to remove empty chars from url()
583	$css = preg_replace("/url$(\s+)([^$]+)(\s+)\)/", "url($2)", $css);
584
585	return trim($css);
586	}
587
588	protected function _commentCB($m){
589	$hasSurroundingWs = (trim($m[0]) !== $m[1]);
590	$m = $m[1];
591	// $m is the comment content w/o the surrounding tokens,
592	// but the return value will replace the entire comment.
593	if ($m === 'keep') {
594	return '/**/';
595	}
596	if ($m === '" "') {
597	// component of http://tantek.com/CSS/Examples/midpass.html
598	return '/" "/';
599	}
600	if (preg_match('@";\\}\\s\\}/\\\\s+@', $m)) {
601	// component of http://tantek.com/CSS/Examples/midpass.html
602	return '/";}}/ */';
603	}
604	if ($this->_inHack) {
605	// inversion: feeding only to one browser
606	if (preg_match('@
607	^/ # comment started like /*/
608	\\s*
609	(\\S[\\s\\S]+?) # has at least some non-ws content
610	\\s*
611	/\\* # ends like // or /*/
612	@x', $m, $n)) {
613	// end hack mode after this comment, but preserve the hack and comment content
614	$this->_inHack = false;
615	return "//{$n[1]}/*/";
616	}
617	}
618	if (substr($m, -1) === '\\') { // comment ends like \*/
619	// begin hack mode and preserve hack
620	$this->_inHack = true;
621	return '/\\/';
622	}
623	if ($m !== '' && $m[0] === '/') { // comment looks like // foo /
624	// begin hack mode and preserve hack
625	$this->_inHack = true;
626	return '///';
627	}
628	if ($this->_inHack) {
629	// a regular comment ends hack mode but should be preserved
630	$this->_inHack = false;
631	return '/**/';
632	}
633	// Issue 107: if there's any surrounding whitespace, it may be important, so
634	// replace the comment with a single space
635	return $hasSurroundingWs // remove all other comments
636	? ' '
637	: '';
638	}
639
640	public function checkInternal($link){
641	$httpHost = str_replace("www.", "", $_SERVER["HTTP_HOST"]);
642
643	if(preg_match("/href=[\"\'](.*?)[\"\']/", $link, $href)){
644
645	if(preg_match("/^\/[^\/]/", $href[1])){
646	return $href[1];
647	}
648
649	if(@strpos($href[1], $httpHost)){
650	return $href[1];
651	}
652
653	// if(preg_match("/fonts\.googleapis\.com/i", $href[1])){
654	// //http://fonts.googleapis.com/css?family=Raleway%3A400%2C600
655	// if(preg_match("/Raleway/i", $href[1])){
656	// return false;
657	// }
658
659	// return $href[1];
660	// }
661	}
662	return false;
663	}
664
665	public function is_internal_css($url){
666	$http_host = trim($_SERVER["HTTP_HOST"], "www.");
667
668	$url = trim($url);
669	$url = trim($url, "'");
670	$url = trim($url, '"');
671
672	$url = str_replace(array("http://", "https://"), "", $url);
673
674	$url = trim($url, '//');
675	$url = trim($url, 'www.');
676
677	if($url){
678	if(preg_match("/".$http_host."/i", $url)){
679	return true;
680	}
681
682	// if(preg_match("/fonts\.googleapis\.com/i", $url)){
683	// //http://fonts.googleapis.com/css?family=Raleway%3A400%2C600
684	// if(preg_match("/Raleway/i", $url)){
685	// return false;
686	// }
687
688	// return true;
689	// }
690	}
691
692	return false;
693	}
694
695	public function convert_path_to_link($path){
696	preg_match("/\/cache\/.+/", $path, $out);
697	$prefixLink = str_replace(array("http:", "https:"), "", WPFC_WP_CONTENT_URL);
698
699	return $prefixLink.$out[0];
700	}
701
702	public function file_get_contents_curl($url, $version = ""){
703	if($data = $this->wpfc->read_file($url)){
704	return $data;
705	}
706
707	$url = str_replace('&', '&', $url);
708
709	if(preg_match("/\.php\?/i", $url)){
710	$version = "";
711	}
712
713	if(preg_match("/(fonts\.googleapis\.com\|iire-social-icons)/i", $url)){
714	$version = "";
715	$url = str_replace(array("'",'"'), "", $url);
716	}
717
718	$url = $url.$version;
719
720	if(preg_match("/^\/[^\/]/", $url)){
721	$url = get_option("home").$url;
722	}
723
724	if(preg_match("/http\:\/\//i", home_url())){
725	$url = preg_replace("/^\/\//", "http://", $url);
726	}else if(preg_match("/https\:\/\//i", home_url())){
727	$url = preg_replace("/^\/\//", "https://", $url);
728	}
729
730	//$response = wp_remote_get($url, array('timeout' => 10, 'headers' => array("cache-control" => array("no-store, no-cache, must-revalidate", "post-check=0, pre-check=0"))));
731	$response = wp_remote_get($url, array('timeout' => 10, 'user-agent' => 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36'));
732
733	if ( !$response \|\| is_wp_error( $response ) ) {
734	return false;
735	}else{
736	if(wp_remote_retrieve_response_code($response) == 200){
737	$data = wp_remote_retrieve_body( $response );
738
739	if(preg_match("/\<\!DOCTYPE/i", $data) \|\| preg_match("/<\/\shtml\s>/i", $data)){
740	return false;
741	}else if(!$data){
742	return "/* empty */";
743	}else{
744	return $data;
745	}
746	}else if(wp_remote_retrieve_response_code($response) == 404){
747	if(preg_match("/\.css/", $url)){
748	return "/404/";
749	}else{
750	return "<!-- 404 -->";
751	}
752	}
753	}
754	}
755	}
756	?>