function formatGPSData($type, $tag, $intel, $data)
{
if ($type == "ASCII") {
if ($tag == "0001" || $tag == "0003") {
// Latitude Reference, Longitude Reference
$data = $data[1] == $data[2] && $data[1] == $data[3] ? $data[0] : $data;
}
} else {
if ($type == "URATIONAL" || $type == "SRATIONAL") {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
if ($intel == 1) {
$top = hexdec(substr($data, 8, 8));
} else {
$top = hexdec(substr($data, 0, 8));
}
//motorola stores them top-bottom
if ($intel == 1) {
$bottom = hexdec(substr($data, 0, 8));
} else {
$bottom = hexdec(substr($data, 8, 8));
}
//motorola stores them top-bottom
if ($type == "SRATIONAL" && $top > 2147483647) {
$top = $top - 4294967296.0;
}
//this makes the number signed instead of unsigned
if ($tag == "0002" || $tag == "0004") {
//Latitude, Longitude
if ($intel == 1) {
$seconds = GPSRational(substr($data, 0, 16), $intel);
$hour = GPSRational(substr($data, 32, 16), $intel);
} else {
$hour = GPSRational(substr($data, 0, 16), $intel);
$seconds = GPSRational(substr($data, 32, 16), $intel);
}
$minutes = GPSRational(substr($data, 16, 16), $intel);
$data = $hour + $minutes / 60 + $seconds / 3600;
} else {
if ($tag == "0007") {
//Time
$seconds = GPSRational(substr($data, 0, 16), $intel);
$minutes = GPSRational(substr($data, 16, 16), $intel);
$hour = GPSRational(substr($data, 32, 16), $intel);
$data = $hour . ":" . $minutes . ":" . $seconds;
} else {
if ($bottom != 0) {
$data = $top / $bottom;
} else {
if ($top == 0) {
$data = 0;
} else {
$data = $top . "/" . $bottom;
}
}
if ($tag == "0006") {
$data .= 'm';
}
}
}
} else {
if ($type == "USHORT" || $type == "SSHORT" || $type == "ULONG" || $type == "SLONG" || $type == "FLOAT" || $type == "DOUBLE") {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
$data = hexdec($data);
} else {
if ($type == "UNDEFINED") {
} else {
if ($type == "UBYTE") {
$data = bin2hex($data);
if ($intel == 1) {
$num = intel2Moto($data);
}
if ($tag == "0000") {
// VersionID
$data = hexdec(substr($data, 0, 2)) . "." . hexdec(substr($data, 2, 2)) . "." . hexdec(substr($data, 4, 2)) . "." . hexdec(substr($data, 6, 2));
} else {
if ($tag == "0005") {
// Altitude Reference
if ($data == "00000000") {
$data = 'Above Sea Level';
} else {
if ($data == "01000000") {
$data = 'Below Sea Level';
}
}
}
}
} else {
$data = bin2hex($data);
if ($intel == 1) {
$data = intel2Moto($data);
}
}
}
}
}
}
return $data;
}
function formatGPSData($type,$tag,$intel,$data) {
if($type=="ASCII") {
} else if($type=="URATIONAL" || $type=="SRATIONAL") {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
if($intel==1) $top = hexdec(substr($data,8,8)); //intel stores them bottom-top
else $top = hexdec(substr($data,0,8)); //motorola stores them top-bottom
if($intel==1) $bottom = hexdec(substr($data,0,8)); //intel stores them bottom-top
else $bottom = hexdec(substr($data,8,8)); //motorola stores them top-bottom
if($type=="SRATIONAL" && $top>2147483647) $top = $top - 4294967296; //this makes the number signed instead of unsigned
if($tag=="0002" || $tag=="0004") { //Latitude
$seconds = GPSRational(substr($data,0,16),$intel);
$minutes = GPSRational(substr($data,16,16),$intel);
$hour = GPSRational(substr($data,32,16),$intel);
$data = $hour+$minutes/60+$seconds/3600;
} else if($tag=="0007") { //Time
$seconds = GPSRational(substr($data,0,16),$intel);
$minutes = GPSRational(substr($data,16,16),$intel);
$hour = GPSRational(substr($data,32,16),$intel);
$data = $hour.":".$minutes.":".$seconds;
} else {
if($bottom!=0) $data=$top/$bottom;
else if($top==0) $data = 0;
else $data=$top."/".$bottom;
}
} else if($type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
$data=hexdec($data);
} else if($type=="UNDEFINED") {
} else if($type=="UBYTE") {
$data = bin2hex($data);
if($intel==1) $num = intel2Moto($data);
if($tag=="0000") { //Latitude
$data = hexdec(substr($data,0,2)).".". hexdec(substr($data,2,2)).".". hexdec(substr($data,4,2)).".". hexdec(substr($data,6,2));
}
} else {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
}
return $data;
}
