Ysurac / FlightAirMap

require/class.SBS.php

Spacing +60 added lines, -60 removed lines

@@ -18,25 +18,25 @@ 
 	public function parse($buffer) {
 		// Not yet finished, no CRC checks
 		$data = array();
-		$typehex = substr($buffer,0,1);
-		if ($typehex == '*' || $typehex == ':') $hex = substr($buffer,1);
+		$typehex = substr($buffer, 0, 1);
+		if ($typehex == '*' || $typehex == ':') $hex = substr($buffer, 1);
 		//elseif ($typehex == '@' || $typehex == '%') $hex = substr($buffer,13,-13);
-		elseif ($typehex == '@' || $typehex == '%') $hex = substr($buffer,13,-1);
-		else $hex = substr($buffer,1,-1);
-		$bin = gmp_strval( gmp_init($hex,16), 2);
+		elseif ($typehex == '@' || $typehex == '%') $hex = substr($buffer, 13, -1);
+		else $hex = substr($buffer, 1, -1);
+		$bin = gmp_strval(gmp_init($hex, 16), 2);
 		//if (strlen($hex) == 28 && $this->parityCheck($hex,$bin)) {
 		//if (strlen($hex) == 28) {
 		//echo strlen($hex);
 		//echo $hex;
 		if (strlen($hex) == 28 || strlen($hex) == 16) {
-			$df = intval(substr($bin,0,5),2);
+			$df = intval(substr($bin, 0, 5), 2);
 			//$ca = intval(substr($bin,5,3),2);
 			// Only support DF17 for now
 			//if ($df == 17 || ($df == 18 && ($ca == 0 || $ca == 1 || $ca == 6))) {
-			if (($df == 17 || $df == 18) && ($this->parityCheck($hex,$bin) || $typehex == '@')) {
-				$icao = substr($hex,2,6);
+			if (($df == 17 || $df == 18) && ($this->parityCheck($hex, $bin) || $typehex == '@')) {
+				$icao = substr($hex, 2, 6);
 				$data['hex'] = $icao;
-				$tc = intval(substr($bin,32,5),2);
+				$tc = intval(substr($bin, 32, 5), 2);
 				if ($tc >= 1 && $tc <= 4) {
 					// Category:
 					// 1 = light aircraft <= 7000 kg
@@ -59,67 +59,67 @@ 
 					// 22 = fixed ground or tethered obstruction
 					// 23 to 24 = reserved
 					//$data['category'] = intval(substr($bin,5,3),2);
-					$data['category'] = intval(substr($bin,37,3),2);
+					$data['category'] = intval(substr($bin, 37, 3), 2);
 					//callsign
-					$csbin = substr($bin,40,56);
+					$csbin = substr($bin, 40, 56);
 					$charset = str_split('#ABCDEFGHIJKLMNOPQRSTUVWXYZ#####_###############0123456789######');
 					$cs = '';
-					$cs .= $charset[intval(substr($csbin,0,6),2)];
-					$cs .= $charset[intval(substr($csbin,6,6),2)];
-					$cs .= $charset[intval(substr($csbin,12,6),2)];
-					$cs .= $charset[intval(substr($csbin,18,6),2)];
-					$cs .= $charset[intval(substr($csbin,24,6),2)];
-					$cs .= $charset[intval(substr($csbin,30,6),2)];
-					$cs .= $charset[intval(substr($csbin,36,6),2)];
-					$cs .= $charset[intval(substr($csbin,42,6),2)];
-					$cs = str_replace('_','',$cs);
-					$cs = str_replace('#','',$cs);
+					$cs .= $charset[intval(substr($csbin, 0, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 6, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 12, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 18, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 24, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 30, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 36, 6), 2)];
+					$cs .= $charset[intval(substr($csbin, 42, 6), 2)];
+					$cs = str_replace('_', '', $cs);
+					$cs = str_replace('#', '', $cs);
 					$callsign = $cs;
 					$data['ident'] = $callsign;
 				} elseif ($tc >= 9 && $tc <= 18) {
 					// Check Q-bit
-					$q = substr($bin,47,1);
+					$q = substr($bin, 47, 1);
 					if ($q) {
-						$n = intval(substr($bin,40,7).substr($bin,48,4),2);
-						$alt = $n*25-1000;
+						$n = intval(substr($bin, 40, 7).substr($bin, 48, 4), 2);
+						$alt = $n*25 - 1000;
 						$data['altitude'] = $alt;
 					}
 					// Check odd/even flag
-					$oe = substr($bin,53,1);
+					$oe = substr($bin, 53, 1);
 					//if ($oe) => odd else even
 					//  131072 is 2^17 since CPR latitude and longitude are encoded in 17 bits.
-					$cprlat = intval(substr($bin,54,17),2)/131072.0;
-					$cprlon = intval(substr($bin,71,17),2)/131072.0;
-					if ($oe == 0) $this::$latlon[$icao] = array('latitude' => $cprlat,'longitude' => $cprlon,'created' => time());
+					$cprlat = intval(substr($bin, 54, 17), 2)/131072.0;
+					$cprlon = intval(substr($bin, 71, 17), 2)/131072.0;
+					if ($oe == 0) $this::$latlon[$icao] = array('latitude' => $cprlat, 'longitude' => $cprlon, 'created' => time());
 					elseif (isset($this::$latlon[$icao]) && (time() - $this::$latlon[$icao]['created']) < 10) {
 						$cprlat_odd = $cprlat;
 						$cprlon_odd = $cprlon;
 						$cprlat_even = $this::$latlon[$icao]['latitude'];
 						$cprlon_even = $this::$latlon[$icao]['longitude'];
-						$j = 59*$cprlat_even-60*$cprlat_odd+0.5;
-						$lat_even = (360.0/60)*($j%60+$cprlat_even);
-						$lat_odd = (360.0/59)*($j%59+$cprlat_odd);
+						$j = 59*$cprlat_even - 60*$cprlat_odd + 0.5;
+						$lat_even = (360.0/60)*($j%60 + $cprlat_even);
+						$lat_odd = (360.0/59)*($j%59 + $cprlat_odd);
 						if ($lat_even >= 270) $lat_even = $lat_even - 360;
 						if ($lat_odd >= 270) $lat_odd = $lat_odd - 360;
 						// check latitude zone
 						if ($this->cprNL($lat_even) == $this->cprNL($lat_odd)) {
 							if ($this::$latlon[$icao]['created'] > time()) {
-								$ni = $this->cprN($lat_even,0);
-								$m = floor($cprlon_even*($this->cprNL($lat_even)-1) - $cprlon_odd * $this->cprNL($lat_even)+0.5);
-								$lon = (360.0/$ni)*($m%$ni+$cprlon_even);
+								$ni = $this->cprN($lat_even, 0);
+								$m = floor($cprlon_even*($this->cprNL($lat_even) - 1) - $cprlon_odd*$this->cprNL($lat_even) + 0.5);
+								$lon = (360.0/$ni)*($m%$ni + $cprlon_even);
 								$lat = $lat_even;
-								if ($lon > 180) $lon = $lon -360;
+								if ($lon > 180) $lon = $lon - 360;
 								if ($lat > -91 && $lat < 91 && $lon > -181 && $lon < 181) {
 									//if ($globalDebug) echo 'cs : '.$cs.' - hex : '.$hex.' - lat : '.$lat.' - lon : '.$lon;
 									$data['latitude'] = $lat;
 									$data['longitude'] = $lon;
 								}
 							} else {
-								$ni = $this->cprN($lat_odd,1);
-								$m = floor($cprlon_even*($this->cprNL($lat_odd)-1) - $cprlon_odd * $this->cprNL($lat_odd)+0.5);
-								$lon = (360.0/$ni)*($m%$ni+$cprlon_odd);
+								$ni = $this->cprN($lat_odd, 1);
+								$m = floor($cprlon_even*($this->cprNL($lat_odd) - 1) - $cprlon_odd*$this->cprNL($lat_odd) + 0.5);
+								$lon = (360.0/$ni)*($m%$ni + $cprlon_odd);
 								$lat = $lat_odd;
-								if ($lon > 180) $lon = $lon -360;
+								if ($lon > 180) $lon = $lon - 360;
 								if ($lat > -91 && $lat < 91 && $lon > -181 && $lon < 181) {
 									//if ($globalDebug) echo 'icao : '.$icao.' - hex : '.$hex.' - lat : '.$lat.' - lon : '.$lon.' second'."\n";
 									$data['latitude'] = $lat;
@@ -131,15 +131,15 @@ 
 					}
 				} elseif ($tc == 19) {
 					// speed & heading
-					$v_ew_dir = intval(substr($bin,45,1));
-					$v_ew = intval(substr($bin,46,10),2);
-					$v_ns_dir = intval(substr($bin,56,1));
-					$v_ns = intval(substr($bin,57,10),2);
+					$v_ew_dir = intval(substr($bin, 45, 1));
+					$v_ew = intval(substr($bin, 46, 10), 2);
+					$v_ns_dir = intval(substr($bin, 56, 1));
+					$v_ns = intval(substr($bin, 57, 10), 2);
 					if ($v_ew_dir) $v_ew = -1*$v_ew;
 					if ($v_ns_dir) $v_ns = -1*$v_ns;
-					$speed = sqrt($v_ns*$v_ns+$v_ew*$v_ew);
-					$heading = atan2($v_ew,$v_ns)*360.0/(2*pi());
-					if ($heading <0) $heading = $heading+360;
+					$speed = sqrt($v_ns*$v_ns + $v_ew*$v_ew);
+					$heading = atan2($v_ew, $v_ns)*360.0/(2*pi());
+					if ($heading < 0) $heading = $heading + 360;
 					$data['speed'] = $speed;
 					$data['heading'] = $heading;
 				}
@@ -154,7 +154,7 @@ 
 	 * Lookup table to convert the latitude to index.
 	*/
 	private function cprNL($lat) {
-		if ($lat < 0) $lat = -$lat;             // Table is simmetric about the equator.
+		if ($lat < 0) $lat = -$lat; // Table is simmetric about the equator.
 		if ($lat < 10.47047130) return 59;
 		if ($lat < 14.82817437) return 58;
 		if ($lat < 18.18626357) return 57;
@@ -216,7 +216,7 @@ 
 		return 1;
 	}
 
-	private function cprN($lat,$isodd) {
+	private function cprN($lat, $isodd) {
 		$nl = $this->cprNL($lat) - $isodd;
 		if ($nl > 1) return $nl;
 		else return 1;
@@ -240,9 +240,9 @@ 
 		    0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000
 		);
 		$crc = 0;
-		$checksum = intval(substr($msg,22,6),16);
+		$checksum = intval(substr($msg, 22, 6), 16);
 		for ($j = 0; $j < strlen($bin); $j++) {
-			if ($bin[$j]) $crc = $crc^intval($modes_checksum_table[$j],0);
+			if ($bin[$j]) $crc = $crc^intval($modes_checksum_table[$j], 0);
 		}
 		if ($crc == $checksum) return true;
 		else {
@@ -264,10 +264,10 @@ 
 			$msg['aircraftid'] = hexdec($data['address']);
 			$msg['hex'] = $data['address'];
 			$msg['flightid'] = hexdec($data['address']);
-			$msg['date_gen'] = date('Y/m/d',$data['timestamp']);
-			$msg['time_gen'] = date('H:i:s',$data['timestamp']).'.180';
-			$msg['date_log'] = date('Y/m/d',$data['timestamp']);
-			$msg['time_log'] = date('H:i:s',$data['timestamp']).'.180';
+			$msg['date_gen'] = date('Y/m/d', $data['timestamp']);
+			$msg['time_gen'] = date('H:i:s', $data['timestamp']).'.180';
+			$msg['date_log'] = date('Y/m/d', $data['timestamp']);
+			$msg['time_log'] = date('H:i:s', $data['timestamp']).'.180';
 			$msg['callsign'] = $data['ident'];
 			$msg['altitude'] = '';
 			$msg['speed'] = '';
@@ -280,7 +280,7 @@ 
 			$msg['emergency'] = '';
 			$msg['SPI'] = '';
 			$msg['ground'] = '';
-			$result[] = implode(',',$msg);
+			$result[] = implode(',', $msg);
 		}
 		if (isset($data['latitude']) && $data['latitude'] != 0) {
 			$msg = array();
@@ -290,10 +290,10 @@ 
 			$msg['aircraftid'] = hexdec($data['address']);
 			$msg['hex'] = $data['address'];
 			$msg['flightid'] = hexdec($data['address']);
-			$msg['date_gen'] = date('Y/m/d',$data['timestamp']);
-			$msg['time_gen'] = date('H:i:s',$data['timestamp']).'.180';
-			$msg['date_log'] = date('Y/m/d',$data['timestamp']);
-			$msg['time_log'] = date('H:i:s',$data['timestamp']).'.180';
+			$msg['date_gen'] = date('Y/m/d', $data['timestamp']);
+			$msg['time_gen'] = date('H:i:s', $data['timestamp']).'.180';
+			$msg['date_log'] = date('Y/m/d', $data['timestamp']);
+			$msg['time_log'] = date('H:i:s', $data['timestamp']).'.180';
 			$msg['callsign'] = '';
 			if (isset($data['altitude'])) $msg['altitude'] = $data['altitude'];
 			else $msg['altitude'] = '';
@@ -311,7 +311,7 @@ 
 			$msg['SPI'] = 0;
 			if (isset($data['ground'])) $msg['ground'] = 1;
 			else $msg['ground'] = 0;
-			$result[] = implode(',',$msg);
+			$result[] = implode(',', $msg);
 		}
 		return $result;
 	}