Viewing file:  BrowserCacheAdminEnvironment.php (28.36 KB) -rw-rw-rw-
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<?php
/**
* W3 PgCache plugin - administrative interface
*/
if (!defined('W3TC')) {
die();
}
w3_require_once(W3TC_INC_DIR . '/functions/activation.php');
w3_require_once(W3TC_INC_DIR . '/functions/file.php');
w3_require_once(W3TC_INC_DIR . '/functions/rule.php');
/**
* Class W3_BrowserCacheAdminEnvironment
*/
class W3_BrowserCacheAdminEnvironment {
/**
* Fixes environment in each wp-admin request
*
* @param W3_Config $config
* @param bool $force_all_checks
* @throws SelfTestExceptions
**/
public function fix_on_wpadmin_request($config, $force_all_checks) {
$exs = new SelfTestExceptions();
if ($config->get_boolean('config.check') || $force_all_checks) {
if ($config->get_boolean('browsercache.enabled')) {
$this->rules_cache_add($config, $exs);
} else {
$this->rules_cache_remove($exs);
}
if ($config->get_boolean('browsercache.enabled') &&
$config->get_boolean('browsercache.no404wp')) {
$this->rules_no404wp_add($config, $exs);
} else {
$this->rules_no404wp_remove($exs);
}
}
if (count($exs->exceptions()) > 0)
throw $exs;
}
/**
* Fixes environment once event occurs
* @throws SelfTestExceptions
**/
public function fix_on_event($config, $event, $old_config = null) {
}
/**
* Fixes environment after plugin deactivation
* @throws SelfTestExceptions
*/
public function fix_after_deactivation() {
$exs = new SelfTestExceptions();
$this->rules_cache_remove($exs);
$this->rules_no404wp_remove($exs);
if (count($exs->exceptions()) > 0)
throw $exs;
}
/**
* Returns required rules for module
*
* @param W3_Config $config
* @return array
*/
public function get_required_rules($config) {
if (!$config->get_boolean('browsercache.enabled'))
return null;
$rewrite_rules = array();
$dispatcher = w3_instance('W3_Dispatcher');
if ($dispatcher->should_browsercache_generate_rules_for_cdn($config)) {
$domain = $dispatcher->get_cdn_domain();
$cdn_rules_path = sprintf('ftp://%s/%s', $domain,
w3_get_cdn_rules_path());
$rewrite_rules[] = array(
'filename' => $cdn_rules_path,
'content' => $this->rules_cache_generate($config, true)
);
}
$browsercache_rules_cache_path = w3_get_browsercache_rules_cache_path();
$rewrite_rules[] = array(
'filename' => $browsercache_rules_cache_path,
'content' => $this->rules_cache_generate($config)
);
if ($config->get_boolean('browsercache.no404wp')) {
$browsercache_rules_no404wp_path =
w3_get_browsercache_rules_no404wp_path();
$rewrite_rules[] = array(
'filename' => $browsercache_rules_no404wp_path,
'content' => $this->rules_no404wp_generate($config)
);
}
return $rewrite_rules;
}
/**
* Returns mime types
*
* @return array
*/
public function get_mime_types() {
return array(
'cssjs' => include W3TC_INC_DIR . '/mime/cssjs.php',
'html' => include W3TC_INC_DIR . '/mime/html.php',
'other' => include W3TC_INC_DIR . '/mime/other.php'
);
}
/**
* Generate rules for FTP upload
*
* @param W3_Config $config
* @return string
**/
public function rules_cache_generate_for_ftp($config) {
return $this->rules_cache_generate($config, true);
}
/**
* rules cache
**/
/**
* Writes cache rules
*
* @throws FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
* @throws FileOperationException
*/
private function rules_cache_add($config, $exs) {
w3_add_rules($exs,
w3_get_browsercache_rules_cache_path(),
$this->rules_cache_generate($config),
W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE,
W3TC_MARKER_END_BROWSERCACHE_CACHE,
array(
W3TC_MARKER_BEGIN_MINIFY_CORE => 0,
W3TC_MARKER_BEGIN_PGCACHE_CORE => 0,
W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP => 0,
W3TC_MARKER_BEGIN_WORDPRESS => 0,
W3TC_MARKER_END_PGCACHE_CACHE => strlen(W3TC_MARKER_END_PGCACHE_CACHE) + 1,
W3TC_MARKER_END_MINIFY_CACHE => strlen(W3TC_MARKER_END_MINIFY_CACHE) + 1
)
);
}
/**
* Removes cache directives
*
* @throws FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
* @throws FileOperationException
*/
private function rules_cache_remove($exs) {
w3_remove_rules($exs,
w3_get_browsercache_rules_cache_path(),
W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE,
W3TC_MARKER_END_BROWSERCACHE_CACHE);
}
/**
* Returns cache rules
*
* @param W3_Config $config
* @param bool $cdnftp
* @return string
*/
public function rules_cache_generate($config, $cdnftp = false) {
switch (true) {
case w3_is_apache():
case w3_is_litespeed():
return $this->rules_cache_generate_apache($config);
case w3_is_nginx():
return $this->rules_cache_generate_nginx($config, $cdnftp);
}
return '';
}
/**
* Returns cache rules
*
* @param W3_Config $config
* @return string
*/
private function rules_cache_generate_apache($config) {
$mime_types2 = $this->get_mime_types();
$cssjs_types = $mime_types2['cssjs'];
$cssjs_types = array_unique($cssjs_types);
$html_types = $mime_types2['html'];
$other_types = $mime_types2['other'];
$cssjs_expires = $config->get_boolean('browsercache.cssjs.expires');
$html_expires = $config->get_boolean('browsercache.html.expires');
$other_expires = $config->get_boolean('browsercache.other.expires');
$cssjs_lifetime = $config->get_integer('browsercache.cssjs.lifetime');
$html_lifetime = $config->get_integer('browsercache.html.lifetime');
$other_lifetime = $config->get_integer('browsercache.other.lifetime');
$compatibility = $config->get_boolean('pgcache.compatibility');
$mime_types = array();
if ($cssjs_expires && $cssjs_lifetime) {
$mime_types = array_merge($mime_types, $cssjs_types);
}
if ($html_expires && $html_lifetime) {
$mime_types = array_merge($mime_types, $html_types);
}
if ($other_expires && $other_lifetime) {
$mime_types = array_merge($mime_types, $other_types);
}
$rules = '';
$rules .= W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE . "\n";
if (count($mime_types)) {
$rules .= "<IfModule mod_mime.c>\n";
foreach ($mime_types as $ext => $mime_type) {
$extensions = explode('|', $ext);
if (!is_array($mime_type))
$mime_type = (array)$mime_type;
foreach($mime_type as $mime_type2) {
$rules .= " AddType " . $mime_type2;
foreach ($extensions as $extension) {
$rules .= " ." . $extension;
}
$rules .= "\n";
}
}
$rules .= "</IfModule>\n";
$rules .= "<IfModule mod_expires.c>\n";
$rules .= " ExpiresActive On\n";
if ($cssjs_expires && $cssjs_lifetime) {
foreach ($cssjs_types as $mime_type) {
$rules .= " ExpiresByType " . $mime_type . " A" . $cssjs_lifetime . "\n";
}
}
if ($html_expires && $html_lifetime) {
foreach ($html_types as $mime_type) {
$rules .= " ExpiresByType " . $mime_type . " A" . $html_lifetime . "\n";
}
}
if ($other_expires && $other_lifetime) {
foreach ($other_types as $mime_type) {
if (is_array($mime_type))
foreach ($mime_type as $mime_type2)
$rules .= " ExpiresByType " . $mime_type2 . " A" . $other_lifetime . "\n";
else
$rules .= " ExpiresByType " . $mime_type . " A" . $other_lifetime . "\n";
}
}
$rules .= "</IfModule>\n";
}
$cssjs_compression = $config->get_boolean('browsercache.cssjs.compression');
$html_compression = $config->get_boolean('browsercache.html.compression');
$other_compression = $config->get_boolean('browsercache.other.compression');
if ($cssjs_compression || $html_compression || $other_compression) {
$compression_types = array();
if ($cssjs_compression) {
$compression_types = array_merge($compression_types, $cssjs_types);
}
if ($html_compression) {
$compression_types = array_merge($compression_types, $html_types);
}
if ($other_compression) {
$compression_types = array_merge($compression_types, array(
//for some reason the 'other' types are not loaded from the 'other' file
'ico' => 'image/x-icon',
'json' => 'application/json'
));
}
$rules .= "<IfModule mod_deflate.c>\n";
if ($compatibility) {
$rules .= " <IfModule mod_setenvif.c>\n";
$rules .= " BrowserMatch ^Mozilla/4 gzip-only-text/html\n";
$rules .= " BrowserMatch ^Mozilla/4\\.0[678] no-gzip\n";
$rules .= " BrowserMatch \\bMSIE !no-gzip !gzip-only-text/html\n";
$rules .= " BrowserMatch \\bMSI[E] !no-gzip !gzip-only-text/html\n";
$rules .= " </IfModule>\n";
}
$rules .= " <IfModule mod_headers.c>\n";
$rules .= " Header append Vary User-Agent env=!dont-vary\n";
$rules .= " </IfModule>\n";
if (version_compare($this->_get_server_version(), '2.3.7', '>=')) {
$rules .= " <IfModule mod_filter.c>\n";
}
$rules .= " AddOutputFilterByType DEFLATE " . implode(' ', $compression_types) . "\n";
$rules .= " <IfModule mod_mime.c>\n";
$rules .= " # DEFLATE by extension\n";
$rules .= " AddOutputFilter DEFLATE js css htm html xml\n";
$rules .= " </IfModule>\n";
if (version_compare($this->_get_server_version(), '2.3.7', '>=')) {
$rules .= " </IfModule>\n";
}
$rules .= "</IfModule>\n";
}
foreach ($mime_types2 as $type => $extensions)
$rules .= $this->_rules_cache_generate_apache_for_type($config,
$extensions, $type);
$rules .= W3TC_MARKER_END_BROWSERCACHE_CACHE . "\n";
return $rules;
}
/**
* Writes cache rules
*
* @param W3_Config $config
* @param array $mime_types
* @param string $section
* @return string
*/
private function _rules_cache_generate_apache_for_type($config, $mime_types,
$section) {
$is_disc_enhanced = $config->get_boolean('pgcache.enabled') &&
$config->get_string('pgcache.engine') == 'file_generic';
$cache_control = $config->get_boolean('browsercache.' . $section . '.cache.control');
$etag = $config->get_boolean('browsercache.' . $section . '.etag');
$w3tc = $config->get_boolean('browsercache.' . $section . '.w3tc');
$unset_setcookie = $config->get_boolean('browsercache.' . $section . '.nocookies');
$set_last_modified = $config->get_boolean('browsercache.' . $section . '.last_modified');
$compatibility = $config->get_boolean('pgcache.compatibility');
$extensions = array_keys($mime_types);
// Remove ext from filesmatch if its the same as permalink extension
$pext = strtolower(pathinfo(get_option('permalink_structure'), PATHINFO_EXTENSION));
if ($pext) {
$extensions = $this->_remove_extension_from_list($extensions, $pext);
}
$extensions_lowercase = array_map('strtolower', $extensions);
$extensions_uppercase = array_map('strtoupper', $extensions);
$rules = '';
$headers_rules = '';
if ($cache_control) {
$cache_policy = $config->get_string('browsercache.' . $section . '.cache.policy');
switch ($cache_policy) {
case 'cache':
$headers_rules .= " Header set Pragma \"public\"\n";
$headers_rules .= " Header set Cache-Control \"public\"\n";
break;
case 'cache_public_maxage':
$expires = $config->get_boolean('browsercache.' . $section . '.expires');
$lifetime = $config->get_integer('browsercache.' . $section . '.lifetime');
$headers_rules .= " Header set Pragma \"public\"\n";
if ($expires)
$headers_rules .= " Header append Cache-Control \"public\"\n";
else
$headers_rules .= " Header set Cache-Control \"max-age=" . $lifetime . ", public\"\n";
break;
case 'cache_validation':
$headers_rules .= " Header set Pragma \"public\"\n";
$headers_rules .= " Header set Cache-Control \"public, must-revalidate, proxy-revalidate\"\n";
break;
case 'cache_noproxy':
$headers_rules .= " Header set Pragma \"public\"\n";
$headers_rules .= " Header set Cache-Control \"private, must-revalidate\"\n";
break;
case 'cache_maxage':
$expires = $config->get_boolean('browsercache.' . $section . '.expires');
$lifetime = $config->get_integer('browsercache.' . $section . '.lifetime');
$headers_rules .= " Header set Pragma \"public\"\n";
if ($expires)
$headers_rules .= " Header append Cache-Control \"public, must-revalidate, proxy-revalidate\"\n";
else
$headers_rules .= " Header set Cache-Control \"max-age=" . $lifetime . ", public, must-revalidate, proxy-revalidate\"\n";
break;
case 'no_cache':
$headers_rules .= " Header set Pragma \"no-cache\"\n";
$headers_rules .= " Header set Cache-Control \"max-age=0, private, no-store, no-cache, must-revalidate\"\n";
break;
}
}
if ($etag) {
$rules .= " FileETag MTime Size\n";
} else {
if ($compatibility) {
$rules .= " FileETag None\n";
$headers_rules .= " Header unset ETag\n";
}
}
if ($unset_setcookie)
$headers_rules .= " Header unset Set-Cookie\n";
if (!$set_last_modified)
$headers_rules .= " Header unset Last-Modified\n";
if ($w3tc)
$headers_rules .= " Header set X-Powered-By \"" . W3TC_POWERED_BY . "\"\n";
if (strlen($headers_rules) > 0) {
$rules .= " <IfModule mod_headers.c>\n";
$rules .= $headers_rules;
$rules .= " </IfModule>\n";
}
if (strlen($rules) > 0) {
$rules = "<FilesMatch \"\\.(" . implode('|',
array_merge($extensions_lowercase, $extensions_uppercase)) .
")$\">\n" . $rules;
$rules .= "</FilesMatch>\n";
}
return $rules;
}
/**
* Returns cache rules
*
* @param W3_Config $config
* @param bool $cdnftp
* @return string
*/
private function rules_cache_generate_nginx($config, $cdnftp = false) {
$mime_types = $this->get_mime_types();
$cssjs_types = $mime_types['cssjs'];
$cssjs_types = array_unique($cssjs_types);
$html_types = $mime_types['html'];
$other_types = $mime_types['other'];
$rules = '';
$rules .= W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE . "\n";
$cssjs_compression = $config->get_boolean('browsercache.cssjs.compression');
$html_compression = $config->get_boolean('browsercache.html.compression');
$other_compression = $config->get_boolean('browsercache.other.compression');
if ($cssjs_compression || $html_compression || $other_compression) {
$compression_types = array();
if ($cssjs_compression) {
$compression_types = array_merge($compression_types, $cssjs_types);
}
if ($html_compression) {
$compression_types = array_merge($compression_types, $html_types);
}
if ($other_compression) {
$compression_types = array_merge($compression_types, array(
'ico' => 'image/x-icon'
));
}
unset($compression_types['html|htm']);
$rules .= "gzip on;\n";
$rules .= "gzip_types " . implode(' ', $compression_types) . ";\n";
}
foreach ($mime_types as $type => $extensions)
$this->_rules_cache_generate_nginx_for_type($config, $rules,
$extensions, $type);
$rules .= W3TC_MARKER_END_BROWSERCACHE_CACHE . "\n";
return $rules;
}
/**
* Adds cache rules for type to &$rules
*
* @param W3_Config $config
* @param string $rules
* @param array $mime_types
* @param string $section
* @param boolean $write_location
* @param boolean $cdnftp
* @return void
*/
private function _rules_cache_generate_nginx_for_type($config, &$rules,
$mime_types, $section, $write_location = false, $cdnftp = false) {
$expires = $config->get_boolean('browsercache.' . $section . '.expires');
$cache_control = $config->get_boolean('browsercache.' . $section . '.cache.control');
$w3tc = $config->get_boolean('browsercache.' . $section . '.w3tc');
if ($expires || $cache_control || $w3tc) {
$lifetime = $config->get_integer('browsercache.' . $section . '.lifetime');
$extensions = array_keys($mime_types);
// Remove ext from filesmatch if its the same as permalink extension
$pext = strtolower(pathinfo(get_option('permalink_structure'), PATHINFO_EXTENSION));
if ($pext) {
$extensions = $this->_remove_extension_from_list($extensions, $pext);
}
$rules .= "location ~ \\.(" . implode('|', $extensions) . ")$ {\n";
if ($expires) {
$rules .= " expires " . $lifetime . "s;\n";
}
if ($cache_control) {
$cache_policy = $config->get_string('browsercache.cssjs.cache.policy');
switch ($cache_policy) {
case 'cache':
$rules .= " add_header Pragma \"public\";\n";
$rules .= " add_header Cache-Control \"public\";\n";
break;
case 'cache_public_maxage':
$rules .= " add_header Pragma \"public\";\n";
$rules .= " add_header Cache-Control \"max-age=" . $lifetime . ", public\";\n";
break;
case 'cache_validation':
$rules .= " add_header Pragma \"public\";\n";
$rules .= " add_header Cache-Control \"public, must-revalidate, proxy-revalidate\";\n";
break;
case 'cache_noproxy':
$rules .= " add_header Pragma \"public\";\n";
$rules .= " add_header Cache-Control \"private, must-revalidate\";\n";
break;
case 'cache_maxage':
$rules .= " add_header Pragma \"public\";\n";
$rules .= " add_header Cache-Control \"max-age=" . $lifetime . ", public, must-revalidate, proxy-revalidate\";\n";
break;
case 'no_cache':
$rules .= " add_header Pragma \"no-cache\";\n";
$rules .= " add_header Cache-Control \"max-age=0, private, no-store, no-cache, must-revalidate\";\n";
break;
}
}
$w3_dispatcher = w3_instance('W3_Dispatcher');
$rules .= $w3_dispatcher->on_browsercache_rules_generation_for_section(
$config, $cdnftp, $section);
if ($w3tc) {
$rules .= " add_header X-Powered-By \"" . W3TC_POWERED_BY . "\";\n";
}
if ($write_location) {
$rules .= ' try_files $uri $uri/ $uri.html /index.php?$args;' . "\n";
}
$rules .= "}\n";
}
}
/**
* rules_no404wp
**/
/**
* Writes no 404 by WP rules
*
* @param W3_Config $config
* @param SelfTestExceptions $exs
* @throws FilesystemOperationException with S/FTP form
* @throws FileOperationException
*/
private function rules_no404wp_add($config, $exs) {
w3_add_rules($exs, w3_get_browsercache_rules_no404wp_path(),
$this->rules_no404wp_generate($config),
W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP,
W3TC_MARKER_END_BROWSERCACHE_NO404WP,
array(
W3TC_MARKER_BEGIN_WORDPRESS => 0,
W3TC_MARKER_END_PGCACHE_CORE =>
strlen(W3TC_MARKER_END_PGCACHE_CORE) + 1,
W3TC_MARKER_END_MINIFY_CORE =>
strlen(W3TC_MARKER_END_MINIFY_CORE) + 1,
W3TC_MARKER_END_BROWSERCACHE_CACHE =>
strlen(W3TC_MARKER_END_BROWSERCACHE_CACHE) + 1,
W3TC_MARKER_END_PGCACHE_CACHE =>
strlen(W3TC_MARKER_END_PGCACHE_CACHE) + 1,
W3TC_MARKER_END_MINIFY_CACHE =>
strlen(W3TC_MARKER_END_MINIFY_CACHE) + 1
)
);
}
/**
* Removes 404 directives
*
* @throws FilesystemOperationException with S/FTP form
* @throws FileOperationException
*/
private function rules_no404wp_remove($exs) {
w3_remove_rules($exs,
w3_get_browsercache_rules_no404wp_path(),
W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP,
W3TC_MARKER_END_BROWSERCACHE_NO404WP
);
}
/**
* Generate rules related to prevent for media 404 error by WP
*
* @param W3_Config $config
* @return string
*/
private function rules_no404wp_generate($config) {
switch (true) {
case w3_is_apache():
case w3_is_litespeed():
return $this->rules_no404wp_generate_apache($config);
case w3_is_nginx():
return $this->rules_no404wp_generate_nginx($config);
}
return false;
}
/**
* Generate rules related to prevent for media 404 error by WP
*
* @param W3_Config $config
* @return string
*/
private function rules_no404wp_generate_apache($config) {
$a = $this->get_mime_types();
$cssjs_types = $a['cssjs'];
$html_types = $a['html'];
$other_types = $a['other'];
$extensions = array_merge(array_keys($cssjs_types),
array_keys($html_types), array_keys($other_types));
$permalink_structure = get_option('permalink_structure');
$permalink_structure_ext = ltrim(strrchr($permalink_structure, '.'),
'.');
if ($permalink_structure_ext != '') {
foreach ($extensions as $index => $extension) {
if (strstr($extension, $permalink_structure_ext) !== false) {
$extensions[$index] = preg_replace('~\|?' .
w3_preg_quote($permalink_structure_ext) .
'\|?~', '', $extension);
}
}
}
$exceptions = $config->get_array('browsercache.no404wp.exceptions');
$rules = '';
$rules .= W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP . "\n";
$rules .= "<IfModule mod_rewrite.c>\n";
$rules .= " RewriteEngine On\n";
$rules .= " RewriteCond %{REQUEST_FILENAME} !-f\n";
$rules .= " RewriteCond %{REQUEST_FILENAME} !-d\n";
if (count($exceptions)) {
$rules .= " RewriteCond %{REQUEST_URI} !(" .
implode('|', $exceptions) . ")\n";
}
$rules .= " RewriteCond %{REQUEST_FILENAME} \\.(" .
implode('|', $extensions) . ")$ [NC]\n";
$rules .= " RewriteRule .* - [L]\n";
$rules .= "</IfModule>\n";
$rules .= W3TC_MARKER_END_BROWSERCACHE_NO404WP . "\n";
return $rules;
}
/**
* Generate rules related to prevent for media 404 error by WP
*
* @param W3_Config $config
* @return string
*/
private function rules_no404wp_generate_nginx($config) {
$a = $this->get_mime_types();
$cssjs_types = $a['cssjs'];
$html_types = $a['html'];
$other_types = $a['other'];
$extensions = array_merge(array_keys($cssjs_types),
array_keys($html_types), array_keys($other_types));
$permalink_structure = get_option('permalink_structure');
$permalink_structure_ext =
ltrim(strrchr($permalink_structure, '.'), '.');
if ($permalink_structure_ext != '') {
foreach ($extensions as $index => $extension) {
if (strstr($extension, $permalink_structure_ext) !== false) {
$extensions[$index] = preg_replace('~\|?' .
w3_preg_quote($permalink_structure_ext) . '\|?~', '',
$extension);
}
}
}
$exceptions = $config->get_array('browsercache.no404wp.exceptions');
$rules = '';
$rules .= W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP . "\n";
$rules .= "if (-f \$request_filename) {\n";
$rules .= " break;\n";
$rules .= "}\n";
$rules .= "if (-d \$request_filename) {\n";
$rules .= " break;\n";
$rules .= "}\n";
if (count($exceptions)) {
$rules .= "if (\$request_uri ~ \"(" . implode('|', $exceptions) .
")\") {\n";
$rules .= " break;\n";
$rules .= "}\n";
}
$rules .= "if (\$request_uri ~* \\.(" . implode('|', $extensions) .
")$) {\n";
$rules .= " return 404;\n";
$rules .= "}\n";
$rules .= W3TC_MARKER_END_BROWSERCACHE_NO404WP . "\n";
return $rules;
}
/**
* Returns the apache, nginx version
* @return string
*/
private function _get_server_version() {
$sig= explode('/', $_SERVER['SERVER_SOFTWARE']);
$temp = isset($sig[1]) ? explode(' ', $sig[1]) : array('0');
$version = $temp[0];
return $version;
}
/**
* Takes an array of extensions single per row and/or extensions delimited by |
* @param $extensions
* @param $ext
* @return array
*/
private function _remove_extension_from_list($extensions, $ext) {
for ($i = 0; $i < sizeof($extensions); $i++) {
if ($extensions[$i] == $ext) {
unset($extensions[$i]);
return $extensions;
} elseif (strpos($extensions[$i], $ext) !== false &&
strpos($extensions[$i], '|') !== false) {
$exts = explode('|', $extensions[$i]);
$key = array_search($ext, $exts);
unset($exts[$key]);
$extensions[$i] = implode('|', $exts);
return $extensions;
}
}
return $extensions;
}
}
|