File "Util.php"
Full Path: /www/wwwroot/shphe-en.com/wp-content/plugins/blog2social/includes/Ajax/Util.php
File size: 27.13 KB
MIME-type: --
Charset: utf-8
<?php
class B2S_Util {
public static function urlsafe_base64_encode($data) {
//return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
return base64_encode($data);
}
public static function urlsafe_base64_decode($data) {
//return base64_decode(strtr($data, '-_', '+/') . str_repeat('=', 3 - ( 3 + strlen($data)) % 4));
return base64_decode($data);
}
public static function getUTCForDate($date, $userTimezone) {
$utcTime = strtotime($date) + ($userTimezone * 3600);
return date('Y-m-d H:i:s', $utcTime);
}
public static function getLocalDate($userTimezone, $lang = 'en') {
$ident = ($lang == 'de') ? 'd.m.Y H:i' : 'Y/m/d g:i a';
$localTime = strtotime(gmdate('Y-m-d H:i:s')) + ($userTimezone * 3600);
return date($ident, $localTime);
}
public static function getbyIdentLocalDate($userTimezone, $ident = "Y-m-d H:i:s") {
$localTime = strtotime(gmdate('Y-m-d H:i:s')) + ($userTimezone * 3600);
return date($ident, $localTime);
}
public static function getCustomLocaleDateTime($userTimezone, $ident = "Y-m-d H:i:s") {
$localTime = strtotime(gmdate('Y-m-d H:i:s')) + ($userTimezone * 3600);
return date($ident, $localTime);
}
public static function getVersion($version = 000) {
return substr(chunk_split($version, 1, '.'), 0, -1);
}
public static function getCustomDateFormat($dateTime = '0000-00-00 00:00:00', $lang = 'en', $time = true) {
if ($lang == 'de') {
$ident = 'd.m.Y ' . (($time) ? 'H:i' : '');
return date($ident, strtotime($dateTime)) . (($time) ? ' Uhr' : '');
} else {
$ident = 'Y/m/d ' . (($time) ? 'g:i a' : '');
return date($ident, strtotime($dateTime));
}
}
public static function getTrialRemainingDays($trialEndDate = '', $timeZone = 'Europe/Berlin') {
if (!empty($trialEndDate)) {
$trailDateUtc = new DateTime($trialEndDate);
$timeZone = empty($timeZone) ? 'Europe/Berlin' : $timeZone;
$trailDateUtc->setTimezone(new DateTimeZone($timeZone));
$isTrial = $trailDateUtc->format('Y-m-d H:i:s');
$differTime = strtotime($isTrial) - time();
if ((int) $differTime >= 0) {
return (int) ($differTime / 86400);
}
return 0;
}
return false;
}
public static function scrapeUrl($url = '') {
if (!empty($url)) {
$param = array();
libxml_use_internal_errors(true); // Yeah if you are so worried about using @ with warnings
$url = $url . ((parse_url($url, PHP_URL_QUERY) ? '&' : '?') . 'no_cache=1'); //nocache
$html = self::b2sFileGetContents($url, true);
if (!empty($html) && $html !== false) {
//Search rist Parameter
$data = self::b2sGetAllTags($html, 'all', false);
if (is_array($data) && !empty($data)) {
return $data;
}
}
return false;
}
}
public static function getMetaTags($postId = 0, $postUrl = '', $network = 1) {
$type = ($network == 2) ? 'twitter' : 'og';
$search = ($network == 2) ? 'name' : 'property';
//GETSTOREEDDATA
if ((int) $postId != 0) {
$metaData = get_option('B2S_PLUGIN_POST_META_TAGES_' . strtoupper($type) . '_' . $postId);
if ($metaData !== false && is_array($metaData)) {
return $metaData;
}
}
//GETDATA
$getTags = array('title', 'description', 'image');
$param = array();
libxml_use_internal_errors(true); // Yeah if you are so worried about using @ with warnings
$postUrl = $postUrl . ((parse_url($postUrl, PHP_URL_QUERY) ? '&' : '?') . 'no_cache=1'); //nocache
$html = self::b2sFileGetContents($postUrl);
if (!empty($html) && $html !== false) {
//Search rist OG Parameter
$temp = self::b2sGetAllTags($html, $type, false, $search);
foreach ($getTags as $k => $v) {
if (isset($temp[$v]) && !empty($temp[$v])) {
$param[$v] = $temp[$v];
} else {
if ($v == 'title') {
if (function_exists('mb_convert_encoding')) {
$param[$v] = htmlspecialchars(self::b2sGetMetaTitle($html));
} else {
$param[$v] = self::b2sGetMetaTitle($html);
}
}
if ($v == 'description') {
if (function_exists('mb_convert_encoding')) {
$param[$v] = htmlspecialchars(self::b2sGetMetaDescription($html));
} else {
$param[$v] = self::b2sGetMetaDescription($html);
}
}
}
}
//STOREDATA
if ((int) $postId != 0) {
update_option('B2S_PLUGIN_POST_META_TAGES_' . strtoupper($type) . '_' . $postId, $param);
}
return $param;
}
return false;
}
private static function b2sFileGetContents($url, $extern = false) {
$args = array(
'timeout' => '20',
'redirection' => '5',
'user-agent' => "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0) Gecko/20100101 Firefox/5.0"
);
$response = wp_remote_get($url, $args);
if (!is_wp_error($response)) {
return wp_remote_retrieve_body($response);
} else if ($extern) {
$res = json_decode(B2S_Api_Get::get(B2S_PLUGIN_API_ENDPOINT . 'get.php?action=scrapeUrl&url=' . urlencode($url)));
if (isset($res->data) && !empty($res->data)) {
return $res->data;
}
}
return false;
}
private static function b2sGetMetaDescription($html) {
//$res = get_meta_tags($url);
//return (isset($res['description']) ? self::cleanContent(strip_shortcodes($res['description'])) : '');
$res = preg_match('#<meta +name *=[\"\']?description[\"\']?[^>]*content=[\"\']?(.*?)[\"\']? */?>#i', $html, $matches);
return (isset($matches[1]) && !empty($matches[1])) ? trim(preg_replace('/\s+/', ' ', $matches[1])) : '';
}
private static function b2sGetMetaTitle($html) {
$res = preg_match("/<title>(.*)<\/title>/siU", $html, $matches);
return (isset($matches[1]) && !empty($matches[1])) ? trim(preg_replace('/\s+/', ' ', $matches[1])) : '';
}
private static function b2sGetAllTags($html, $type = 'og', $ignoreEncoding = false, $search = 'property') {
$list = array();
$doc = new DOMDocument();
if (function_exists('mb_convert_encoding') && !$ignoreEncoding) {
@$doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
} else {
@$doc->loadHTML($html);
}
$metas = $doc->getElementsByTagName('meta');
$title = $doc->getElementsByTagName("title");
if ($type == 'all') {
if ($title->length > 0) {
if ($title->item(0)->nodeValue != "") {
$list['default_title'] = $title->item(0)->nodeValue;
}
}
}
for ($i = 0; $i < $metas->length; $i++) {
$meta = $metas->item($i);
if ($type != 'all') {
if (($meta->getAttribute('property') == $type . ':title' || $meta->getAttribute('name') == $type . ':title') && !isset($list['title'])) {
$list['title'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
}
if (($meta->getAttribute('property') == $type . ':description' || $meta->getAttribute('name') == $type . ':description') && !isset($list['description'])) {
$desc = self::cleanContent(strip_shortcodes($meta->getAttribute('content')));
$list['description'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($desc) : $desc);
}
if (($meta->getAttribute('property') == $type . ':image' || $meta->getAttribute('name') == $type . ':image') && !isset($list['image'])) {
$list['image'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
}
} else {
if ($meta->getAttribute('name') == 'description' && !isset($list['default_description'])) {
$list['default_description'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
}
if ($meta->getAttribute($search) == 'og:title' && !isset($list['og_title'])) {
$list['og_title'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
}
if ($meta->getAttribute($search) == 'og:description' && !isset($list['og_description'])) {
$desc = self::cleanContent(strip_shortcodes($meta->getAttribute('content')));
$list['og_description'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($desc) : $desc);
}
if ($meta->getAttribute($search) == 'og:image' && !isset($list['og_image'])) {
$list['og_image'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
}
//Further
/* if ($meta->getAttribute($search) == 'twitter:title' && !isset($list['twitter_title'])) {
$list['twitter_title'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
}
if ($meta->getAttribute($search) == 'twitter:description' && !isset($list['twitter_description'])) {
$desc = self::cleanContent(strip_shortcodes($meta->getAttribute('content')));
$list['twitter_description'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($desc) : $desc);
}
if ($meta->getAttribute($search) == 'twitter:image' && !isset($list['twitter_image'])) {
$list['twitter_image'] = (function_exists('mb_convert_encoding') ? htmlspecialchars($meta->getAttribute('content')) : $meta->getAttribute('content'));
} */
}
}
return $list;
}
public static function getImagesByPostId($postId = 0, $postContent = '', $postUrl = '', $network = false, $postLang = 'en') {
$homeUrl = get_site_url();
$gd_cdn_setting = get_option('gd_cdn_setting');
$cur_home_url = get_option('siteurl');
$scheme = parse_url($homeUrl, PHP_URL_SCHEME);
$featuredImage = wp_get_attachment_url(get_post_thumbnail_id($postId));
$content = self::getFullContent($postId, $postContent, $postUrl, $postLang);
$matches = array();
if (!preg_match_all('%<img.*?src=[\"\'](.*?)[\"\'].*?>%', $content, $matches) && !$featuredImage) {
return false;
}
array_unshift($matches[1], $featuredImage);
$rtrnArray = array();
foreach ($matches[1] as $key => $imgUrl) {
if ($imgUrl == false) {
continue;
}
//AllowedExtensions?
if (!$network && !in_array(substr($imgUrl, strrpos($imgUrl, '.')), array('.jpg', '.png'))) {
continue;
}
//isRelativ?
if (!preg_match('/((http|https):\/\/|(www.))/', $imgUrl)) {
//StartWith //
if ((substr($imgUrl, 0, 2) == '//')) {
$imgUrl = (($scheme != NULL) ? $scheme : 'http') . ':' . $imgUrl;
} else {
//StartWith /
$imgUrl = (substr($imgUrl, 0, 1) != '/') ? '/' . $imgUrl : $imgUrl;
$imgUrl = str_replace('//', '/', $imgUrl);
$imgUrl = $homeUrl . $imgUrl;
if (strpos($imgUrl, 'http://') === false && strpos($imgUrl, 'https://') === false) {
$imgUrl = (($scheme != NULL) ? $scheme : 'http') . '://' . $imgUrl;
}
}
}
/* $file_headers = @get_headers($imgUrl);
if ((!is_array($file_headers)) || (is_array($file_headers) && !preg_match('/200/', $file_headers[0]))) {
continue;
} */
$imgUrl = str_replace($cur_home_url.'/',$gd_cdn_setting['weburl'],$imgUrl);
$rtrnArray[$key][0] = urldecode($imgUrl);
}
return $rtrnArray;
}
public static function prepareContent($postId = 0, $postContent = '', $postUrl = '', $allowHtml = '<p><h1><h2><br><i><b><a><img>', $allowEmoji = true, $postLang = 'en') {
$homeUrl = get_site_url();
$scheme = parse_url($homeUrl, PHP_URL_SCHEME);
$postContent = html_entity_decode($postContent, ENT_COMPAT, 'UTF-8');
$postContent = self::getFullContent($postId, $postContent, $postUrl, $postLang);
$prepareContent = ($allowHtml !== false) ? self::cleanContent(self::cleanHtmlAttr(strip_shortcodes(self::cleanShortCodeByCaption($postContent)))) : self::cleanContent(strip_shortcodes($postContent));
$prepareContent = ($allowEmoji !== false) ? $prepareContent : self::remove4byte($prepareContent);
//$prepareContent = preg_replace('/(?:[ \t]*(?:\n|\r\n?)){3,}/', "\n\n", $prepareContent);
if ($allowHtml !== false) {
$tempContent = nl2br(preg_replace('/(?:[ \t]*(?:\n|\r\n?)){3,}/', "\n", trim(strip_tags($prepareContent, $allowHtml))));
if (preg_match_all('%<img.*?src=[\"\'](.*?)[\"\'].*?/>%', $tempContent, $matches)) {
foreach ($matches[1] as $key => $imgUrl) {
if ($imgUrl == false) {
continue;
}
//isRelativ?
if (!preg_match('/((http|https):\/\/|(www.))/', $imgUrl)) {
//StartWith //
if ((substr($imgUrl, 0, 2) == '//')) {
$tempImgUrl = (($scheme != NULL) ? $scheme : 'http') . ':' . $imgUrl;
} else {
//StartWith /
$tempImgUrl = (substr($imgUrl, 0, 1) != '/') ? '/' . $imgUrl : $imgUrl;
$tempImgUrl = str_replace('//', '/', $tempImgUrl);
$tempImgUrl = $homeUrl . $tempImgUrl;
if (strpos($tempImgUrl, 'http://') === false && strpos($imgUrl, 'https://') === false) {
$tempImgUrl = (($scheme != NULL) ? $scheme : 'http') . '://' . $tempImgUrl;
}
}
$tempContent = str_replace(trim($imgUrl), $tempImgUrl, $tempContent);
}
}
}
return $tempContent;
}
return preg_replace('/(?:[ \t]*(?:\n|\r\n?)){3,}/', "\n\n", trim(strip_tags($prepareContent)));
}
public static function cleanHtmlAttr($postContent) {
$postContent = preg_replace('/(<[^>]+) style=[\"\'].*?[\"\']/i', '$1', $postContent);
$postContent = preg_replace('/(<[^>]+) class=[\"\'].*?[\"\']/i', '$1', $postContent);
$postContent = preg_replace('/(<[^>]+) height=[\"\'].*?[\"\']/i', '$1', $postContent);
$postContent = preg_replace('/(<[^>]+) width=[\"\'].*?[\"\']/i', '$1', $postContent);
return preg_replace('/(<[^>]+) id=[\"\'].*?[\"\']/i', '$1', $postContent);
}
public static function cleanContent($postContent) {
return preg_replace('/\[.*?(?=\])\]/s', '', $postContent);
}
public static function getFullContent($postId = 0, $postContent = '', $postUrl = '', $postLang = 'en') {
$postLang = ($postLang === false) ? 'en' : trim(strtolower($postLang));
//isset settings allow shortcode
if (get_option('B2S_PLUGIN_USER_ALLOW_SHORTCODE_' . B2S_PLUGIN_BLOG_USER_ID) !== false) {
//check is shortcode in content
if (preg_match('/\[(.*?)\]/s', $postContent)) {
//check has crawled content from frontend
$dbContent = get_option('B2S_PLUGIN_POST_CONTENT_' . $postId);
if ($dbContent !== false) {
return $dbContent;
} else {
//crawl content from frontend
$postUrl = add_query_arg(array('b2s_get_full_content' => 1, 'no_cache' => 1, 'lang' => $postLang), $postUrl);
$wpB2sGetFullContent = wp_remote_get($postUrl, array('timeout' => 11)); //slot 11 seconds
if (is_array($wpB2sGetFullContent) && !is_wp_error($wpB2sGetFullContent)) {
//get crwaled content from db - hide cache by get_options
global $wpdb;
$dbContent = $wpdb->get_var($wpdb->prepare("SELECT option_value FROM " . $wpdb->options . " WHERE option_name =%s ", 'B2S_PLUGIN_POST_CONTENT_' . $postId));
if ($dbContent !== NULL) {
return $dbContent;
}
}
}
}
}
return $postContent;
}
//Emoji by Schedule + AllowNoNetwork
public static function remove4byte($content) {
if (function_exists('iconv')) {
$content = iconv("utf-8", "utf-8//ignore", $content);
}
return trim(preg_replace('%(?:
\xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
)%xs', '', $content));
}
public static function cleanShortCodeByCaption($postContent) {
preg_match_all('#\s*\[caption[^]]*\].*?\[/caption\]\s*#is', $postContent, $matches);
if (isset($matches[0]) && !empty($matches[0]) && is_array($matches[0])) {
$temp = '';
foreach ($matches[0] as $k => $v) {
$temp = $v;
if (preg_match('/< *img[^>]+\>/i', $v, $match)) {
$v = (isset($match[0])) ? str_replace($match[0], $match[0] . "\n\n", $v) : $v;
$t = preg_replace('#\s*\[/caption\]\s*#is', "\n\n", $v);
$new = preg_replace('#\s*\[caption[^]]*\]\s*#is', '', $t);
$postContent = str_replace($temp, "\n" . $new, $postContent);
}
}
}
return $postContent;
}
public static function getRandomTime($start, $ende) {
$startparts = explode(':', $start);
$startH = $startparts[0];
$startMin = strlen($startparts[1]) == 1 ? '0' . $startparts[1] : $startparts[1];
$endparts = explode(':', $ende);
$endH = $endparts[0];
$endMin = strlen($endparts[1]) == 1 ? '0' . $endparts[1] : $endparts[1];
$rand = rand((int) ($startH . $startMin), (int) ($endH . $endMin));
if ($rand == NULL) {
return date('H:00');
}
if (strlen($rand) == 3) {
$rand = '0' . $rand;
}
$hour = substr($rand, 0, 2);
$miunte = substr($rand, 2, 2);
$minute = $miunte > 50 ? '30' : '00';
return $hour . ':' . $minute;
}
public static function getTimeByLang($time, $lang = 'de') {
$time = substr('0' . $time, -2);
$slug = ($lang == 'en') ? 'h:i a' : 'H:i';
return date($slug, strtotime(date('Y-m-d ' . $time . ':00:00')));
}
public static function getExcerpt($text, $count = 400, $max = false, $add = false) {
//Bug: Converting json + PHP Extension
if (function_exists('mb_strlen') && function_exists('mb_substr') && function_exists('mb_stripos')) {
if (mb_strlen($text, 'UTF-8') < $count) {
return trim($text);
}
$stops = array('.', ':');
$min = (int) $count / 2;
$cleanTruncateWord = true;
$max = ($max !== false) ? ($max - $min) : ($min - 1);
if (mb_strlen($text, 'UTF-8') < $max) {
return trim($text);
}
$sub = mb_substr($text, $min, mb_strripos(mb_substr($text, $min, $max, 'UTF-8'), ' '), 'UTF-8');
for ($i = 0; $i < count($stops); $i++) {
if (count($subArray = explode($stops[$i], $sub)) > 1) {
$cleanTruncateWord = false;
if (mb_substr($subArray[count($subArray) - 1], 0, 1) == ' ' || mb_substr($subArray[count($subArray) - 1], 0, 1) == "\n") { //empty first charcater in last explode - delete last explode
$subArray[count($subArray) - 1] = ' ';
}
if (mb_stripos($subArray[count($subArray) - 1], $stops[$i]) === false) { //delete last explode if no stops set
$subArray[count($subArray) - 1] = mb_substr($subArray[count($subArray) - 1], 0, mb_stripos($subArray[count($subArray) - 1], ' '));
}
$sub = implode($stops[$i], $subArray);
$add = false;
break;
}
}
if ($cleanTruncateWord) {
$lastIndex = mb_strripos($sub, ' ');
if ($lastIndex !== false) {
$sub = trim(mb_substr($sub, 0, $lastIndex));
}
}
$text = trim(mb_substr($text, 0, $min, 'UTF-8') . $sub);
return ($add) ? $text . "..." : $text;
}
return trim($text);
}
//Plugin qTranslate [:en]Content[:de]Text[:]
public static function getTitleByLanguage($title, $postLang = 'en') {
//$title = html_entity_decode($title, ENT_QUOTES | ENT_XML1);
$postLang = ($postLang === false) ? 'en' : trim(strtolower($postLang));
$regex = "#(<!--:[a-z]{2}-->|<!--:-->|\[:[a-z]{2}\]|\[:\]|\{:[a-z]{2}\}|\{:\})#ism";
$blocks = preg_split($regex, $title, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
if (count($blocks) <= 1) {//no language is encoded in the $text, the most frequent case
return strip_tags($title);
}
$result = array();
$current_lang = false;
foreach ($blocks as $block) {
// detect c-tags
if (preg_match("#^<!--:([a-z]{2})-->$#ism", $block, $matches)) {
$current_lang = $matches[1];
continue;
// detect b-tags
} elseif (preg_match("#^\[:([a-z]{2})\]$#ism", $block, $matches)) {
$current_lang = $matches[1];
continue;
// detect s-tags @since 3.3.6 swirly bracket encoding added
} elseif (preg_match("#^\{:([a-z]{2})\}$#ism", $block, $matches)) {
$current_lang = $matches[1];
continue;
}
switch ($block) {
case '[:]':
case '{:}':
case '<!--:-->':
$current_lang = false;
break;
default:
// correctly categorize text block
if ($current_lang) {
if (!isset($result[$current_lang])) {
$result[$current_lang] = '';
}
$result[$current_lang] .= $block;
$found[$current_lang] = true;
$current_lang = false;
}
break;
}
}
foreach ($result as $l => $text) {
$result[$l] = trim(strip_tags($text));
}
if (!isset($found[$postLang])) {
$locale = (!get_locale()) ? get_locale() : B2S_LANGUAGE;
$postLang = substr($locale, 0, 2);
if (!isset($found[$postLang])) {
$postLang = current(array_keys($found));
}
}
return strip_tags($result[$postLang]);
}
public static function createTimezoneList($selected = '', $region = 2047) { //DateTimeZone::ALL == 2047 >=PHP 5.5.3 constant not set
$timezones = timezone_identifiers_list($region);
if (!$timezones) {
return false;
}
$optionHtmlList = '';
$timezoneData = array();
foreach ($timezones as $timezone) {
$timezoneData[$timezone] = self::getOffsetToUtcByTimeZone($timezone);
self::humanReadableOffset($timezoneData[$timezone]);
$utcStr = '(UTC ' . self::humanReadableOffset($timezoneData[$timezone]) . ')';
$timeZoneEntry = trim($utcStr) . ' ' . trim(preg_replace("/\_/", ' ', $timezone));
$isSelected = ($timezone == $selected) ? 'selected' : '';
$optionHtmlList .= '<option value="' . $timezone . '" data-offset="' . $timezoneData[$timezone] . '" ' . $isSelected . '>' . $timeZoneEntry . '</option>';
}
return $optionHtmlList;
}
public static function humanReadableOffset($floatnbr = 0) {
$result = '';
$floatnbr = number_format($floatnbr, 2, '.', ' ');
$sign = '';
switch ($floatnbr) {
case $floatnbr > 0.00:
$sign = '+';
break;
case $floatnbr < 0.00:
$sign = '-';
break;
case $floatnbr == 0.00:
break;
}
$nbrSplit = explode('.', $floatnbr);
$first = $nbrSplit[0];
if ($first < 0) {
$first = preg_replace('/-/', '', $first);
}
$first = str_pad($first, 2, '0', STR_PAD_LEFT);
$second = $nbrSplit[1];
if ($second > 0) {
$second = $second / 100 * 60;
}
if ($floatnbr < 0.00) {
$first = '-' . $first;
} elseif ($floatnbr > 0.00) {
$first = '+' . $first;
} else {
$first = ' ' . $first;
}
return $first . ':' . $second;
}
public static function getOffsetToUtcByTimeZone($userTimeZone = '', $firstDateTime = 'now') {
if (empty($userTimeZone)) {
$userTimeZone = date_default_timezone_get();
}
$this_tz = new DateTimeZone($userTimeZone);
$now = new DateTime($firstDateTime, $this_tz);
$offset = $this_tz->getOffset($now);
return (float) $offset / 3600;
}
}