function amr_deduceTZID($icstzid)
{
// we have something that php didn't like, so we will try work something out
// Not great, really should use the filter function rather
global $amr_globaltz, $globaltzstring;
// $strip = array ('(',' ');
// $icstzid = str_replace($strip,'',$icstzid);
$gmtend = stripos($icstzid, ')');
/* do we have a brackedt GMT ? */
//if (isset ($_REQUEST['tzdebug'])) {echo '<br/>Check for a bracketed gmt? = '.$gmtend.' in string '.$icstzid ; }
if (!empty($gmtend)) {
$icstzid = str_replace(')', '/', $icstzid);
$icstzcities = explode('/', $icstzid);
/* could be commas, could be slashes */
if (isset($_REQUEST['tzdebug'])) {
echo '<br/>strip the gmt out ';
print_r($icstzcities);
}
$gmt = stripos($icstzid, 'GMT');
/* do we have a brackedt GMT ? */
if (!empty($gmt)) {
unset($icstzcities[0]);
}
/* don't want the GMT - potentially misleading */
} else {
/* Maybe we have a list of cities and maybe we do not */
$icstzcities = array();
$temp = explode(',', $icstzid);
/* could be commas, could be slashes */
foreach ($temp as $temp2) {
$temp3 = explode('/', $temp2);
$icstzcities = array_merge($icstzcities, $temp3);
}
}
foreach ($icstzcities as $i => $icscity) {
$icstzcities[$i] = trim($icscity, ' ');
}
//if (isset ($_REQUEST['tzdebug'])) { echo '<br />Do we have a City? <br />';print_r($icstzcities);}
$globalcontcity = explode('/', $globaltzstring);
if (isset($globalcontcity[1])) {
$globalcity = $globalcontcity[1];
} else {
$globalcity = $globalcontcity[0];
}
// if (isset ($_REQUEST['tzdebug'])) { echo '<hr> text = '.$text.'<br/>icstzid = '.$icstzid.' and wp tz = '.$globalcity.' <br >'; print_r($icstzcities); }
if (in_array($globalcity, $icstzcities)) {
/* if one of the cities in the tzid matches ours, again we can use the matched one */
$tzname = $globaltzstring;
} else {
$alltzcities = amr_get_timezone_cities();
if (isset($alltzcities[$icstzid])) {
/* then it is a normal php timezone we know about, so we can proceed */
$tzname = $icstzid;
} else {
foreach ($icstzcities as $i => $c) {
if (isset($alltzcities[$c])) {
/* try each of the cities if we have mutiple */
$tzname = $alltzcities[$c];
break;
}
}
if (isset($_REQUEST['tzdebug'])) {
echo '<br/>No match to known cities';
}
}
}
/* */
if (!isset($tzname)) {
/* see if we do it with GMT after all ? */
if (isset($icstzcities[0])) {
$tryoffset = str_replace('GMT', '', $icstzcities[0]);
if (empty($tryoffset) or is_int($tryoffset)) {
$tzname = amr_getTimeZone($tryoffset);
if (isset($_REQUEST['tzdebug'])) {
echo '<br/>Try see if offset:' . $tryoffset . ' gave ' . $tzname;
}
} else {
$tzname = amr_unknown_timezone($icstzid, $globaltzstring);
}
} else {
$tzname = amr_unknown_timezone($icstzid, $globaltzstring);
}
}
if (isset($_REQUEST['tzdebug'])) {
echo '<br /><b>Timezone must be: </b> ' . $tzname . '<br />';
}
$tz = amr_try_timezone($tzname);
if (!$tz) {
$tz = $amr_globaltz;
}
return $tz;
}
function amr_set_defaults_for_datetime()
{
global $amr_globaltz;
global $ical_timezone;
if ($a_tz = get_option('timezone_string') and !empty($a_tz)) {
$amr_globaltz = timezone_open($a_tz);
//date_default_timezone_set($a_tz);
if (isset($_GET['tzdebug'])) {
echo '<br />Tz string:' . $a_tz;
}
} else {
if ($gmt_offset = get_option('gmt_offset') and !is_null($gmt_offset) and is_numeric($gmt_offset)) {
$a_tz = amr_getTimeZone($gmt_offset);
$amr_globaltz = timezone_open($a_tz);
//date_default_timezone_set($a_tz);
if (isset($_GET['tzdebug'])) {
echo '<h2>Found gmt offset in wordpress options:' . $gmt_offset . '</h2>';
}
} else {
if (isset($_GET['tzdebug'])) {
echo '<h2>Using php default for timezone</h2>';
}
$amr_globaltz = timezone_open(date_default_timezone_get());
// this will give UTC as wordpress ALWAYS uses UTC
}
}
if (empty($amr_globaltz)) {
echo '<br />Error getting and setting global timezone either from wp or the default php ';
}
$ical_timezone = $amr_globaltz;
// usedin amr-events aand to save the global tz if it changes do to event timezone use
}
