Ysurac / FlightAirMap

require/class.SBS.php

Braces +246 added lines, -86 removed lines

@@ -26,8 +26,11 @@ 
 			}
 		}
 		//elseif ($typehex == '@' || $typehex == '%') $hex = substr($buffer,13,-13);
-		elseif ($typehex == '@' || $typehex == '%') $hex = substr($buffer,13,-1);
-		else $hex = substr($buffer,1,-1);
+		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) {
@@ -95,8 +98,9 @@ 
 					//  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' => $cprlon,'created' => time());
-					elseif (isset($this::$latlon[$icao]) && (time() - $this::$latlon[$icao]['created']) < 10) {
+					if ($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'];
@@ -104,8 +108,12 @@ 
 						$j = 59*$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 = $lat_odd - 360;
+						if ($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()) {
@@ -113,7 +121,9 @@ 
 								$m = floor($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;
@@ -124,14 +134,18 @@ 
 								$m = floor($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;
 									$data['longitude'] = $lon;
 								}
 							}
-						} else echo "Not cprNL";
+						} else {
+							echo "Not cprNL";
+						}
 						unset($this::$latlon[$icao]);
 					}
 				} elseif ($tc == 19) {
@@ -140,11 +154,17 @@ 
 					$v_ew = intval(substr($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;
+					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 = $heading+360;
+					if ($heading <0) {
+						$heading = $heading+360;
+					}
 					$data['speed'] = $speed;
 					$data['heading'] = $heading;
 				}
@@ -159,72 +179,194 @@ 
 	 * Lookup table to convert the latitude to index.
 	*/
 	private function cprNL($lat) {
-		if ($lat < 0) $lat = -$lat;             // Table is simmetric about the equator.
-		if ($lat < 10.47047130) return 59;
-		if ($lat < 14.82817437) return 58;
-		if ($lat < 18.18626357) return 57;
-		if ($lat < 21.02939493) return 56;
-		if ($lat < 23.54504487) return 55;
-		if ($lat < 25.82924707) return 54;
-		if ($lat < 27.93898710) return 53;
-		if ($lat < 29.91135686) return 52;
-		if ($lat < 31.77209708) return 51;
-		if ($lat < 33.53993436) return 50;
-		if ($lat < 35.22899598) return 49;
-		if ($lat < 36.85025108) return 48;
-		if ($lat < 38.41241892) return 47;
-		if ($lat < 39.92256684) return 46;
-		if ($lat < 41.38651832) return 45;
-		if ($lat < 42.80914012) return 44;
-		if ($lat < 44.19454951) return 43;
-		if ($lat < 45.54626723) return 42;
-		if ($lat < 46.86733252) return 41;
-		if ($lat < 48.16039128) return 40;
-		if ($lat < 49.42776439) return 39;
-		if ($lat < 50.67150166) return 38;
-		if ($lat < 51.89342469) return 37;
-		if ($lat < 53.09516153) return 36;
-		if ($lat < 54.27817472) return 35;
-		if ($lat < 55.44378444) return 34;
-		if ($lat < 56.59318756) return 33;
-		if ($lat < 57.72747354) return 32;
-		if ($lat < 58.84763776) return 31;
-		if ($lat < 59.95459277) return 30;
-		if ($lat < 61.04917774) return 29;
-		if ($lat < 62.13216659) return 28;
-		if ($lat < 63.20427479) return 27;
-		if ($lat < 64.26616523) return 26;
-		if ($lat < 65.31845310) return 25;
-		if ($lat < 66.36171008) return 24;
-		if ($lat < 67.39646774) return 23;
-		if ($lat < 68.42322022) return 22;
-		if ($lat < 69.44242631) return 21;
-		if ($lat < 70.45451075) return 20;
-		if ($lat < 71.45986473) return 19;
-		if ($lat < 72.45884545) return 18;
-		if ($lat < 73.45177442) return 17;
-		if ($lat < 74.43893416) return 16;
-		if ($lat < 75.42056257) return 15;
-		if ($lat < 76.39684391) return 14;
-		if ($lat < 77.36789461) return 13;
-		if ($lat < 78.33374083) return 12;
-		if ($lat < 79.29428225) return 11;
-		if ($lat < 80.24923213) return 10;
-		if ($lat < 81.19801349) return 9;
-		if ($lat < 82.13956981) return 8;
-		if ($lat < 83.07199445) return 7;
-		if ($lat < 83.99173563) return 6;
-		if ($lat < 84.89166191) return 5;
-		if ($lat < 85.75541621) return 4;
-		if ($lat < 86.53536998) return 3;
-		if ($lat < 87.00000000) return 2;
+		if ($lat < 0) {
+			$lat = -$lat;
+		}
+		// Table is simmetric about the equator.
+		if ($lat < 10.47047130) {
+			return 59;
+		}
+		if ($lat < 14.82817437) {
+			return 58;
+		}
+		if ($lat < 18.18626357) {
+			return 57;
+		}
+		if ($lat < 21.02939493) {
+			return 56;
+		}
+		if ($lat < 23.54504487) {
+			return 55;
+		}
+		if ($lat < 25.82924707) {
+			return 54;
+		}
+		if ($lat < 27.93898710) {
+			return 53;
+		}
+		if ($lat < 29.91135686) {
+			return 52;
+		}
+		if ($lat < 31.77209708) {
+			return 51;
+		}
+		if ($lat < 33.53993436) {
+			return 50;
+		}
+		if ($lat < 35.22899598) {
+			return 49;
+		}
+		if ($lat < 36.85025108) {
+			return 48;
+		}
+		if ($lat < 38.41241892) {
+			return 47;
+		}
+		if ($lat < 39.92256684) {
+			return 46;
+		}
+		if ($lat < 41.38651832) {
+			return 45;
+		}
+		if ($lat < 42.80914012) {
+			return 44;
+		}
+		if ($lat < 44.19454951) {
+			return 43;
+		}
+		if ($lat < 45.54626723) {
+			return 42;
+		}
+		if ($lat < 46.86733252) {
+			return 41;
+		}
+		if ($lat < 48.16039128) {
+			return 40;
+		}
+		if ($lat < 49.42776439) {
+			return 39;
+		}
+		if ($lat < 50.67150166) {
+			return 38;
+		}
+		if ($lat < 51.89342469) {
+			return 37;
+		}
+		if ($lat < 53.09516153) {
+			return 36;
+		}
+		if ($lat < 54.27817472) {
+			return 35;
+		}
+		if ($lat < 55.44378444) {
+			return 34;
+		}
+		if ($lat < 56.59318756) {
+			return 33;
+		}
+		if ($lat < 57.72747354) {
+			return 32;
+		}
+		if ($lat < 58.84763776) {
+			return 31;
+		}
+		if ($lat < 59.95459277) {
+			return 30;
+		}
+		if ($lat < 61.04917774) {
+			return 29;
+		}
+		if ($lat < 62.13216659) {
+			return 28;
+		}
+		if ($lat < 63.20427479) {
+			return 27;
+		}
+		if ($lat < 64.26616523) {
+			return 26;
+		}
+		if ($lat < 65.31845310) {
+			return 25;
+		}
+		if ($lat < 66.36171008) {
+			return 24;
+		}
+		if ($lat < 67.39646774) {
+			return 23;
+		}
+		if ($lat < 68.42322022) {
+			return 22;
+		}
+		if ($lat < 69.44242631) {
+			return 21;
+		}
+		if ($lat < 70.45451075) {
+			return 20;
+		}
+		if ($lat < 71.45986473) {
+			return 19;
+		}
+		if ($lat < 72.45884545) {
+			return 18;
+		}
+		if ($lat < 73.45177442) {
+			return 17;
+		}
+		if ($lat < 74.43893416) {
+			return 16;
+		}
+		if ($lat < 75.42056257) {
+			return 15;
+		}
+		if ($lat < 76.39684391) {
+			return 14;
+		}
+		if ($lat < 77.36789461) {
+			return 13;
+		}
+		if ($lat < 78.33374083) {
+			return 12;
+		}
+		if ($lat < 79.29428225) {
+			return 11;
+		}
+		if ($lat < 80.24923213) {
+			return 10;
+		}
+		if ($lat < 81.19801349) {
+			return 9;
+		}
+		if ($lat < 82.13956981) {
+			return 8;
+		}
+		if ($lat < 83.07199445) {
+			return 7;
+		}
+		if ($lat < 83.99173563) {
+			return 6;
+		}
+		if ($lat < 84.89166191) {
+			return 5;
+		}
+		if ($lat < 85.75541621) {
+			return 4;
+		}
+		if ($lat < 86.53536998) {
+			return 3;
+		}
+		if ($lat < 87.00000000) {
+			return 2;
+		}
 		return 1;
 	}
 
 	private function cprN($lat,$isodd) {
 		$nl = $this->cprNL($lat) - $isodd;
-		if ($nl > 1) return $nl;
-		else return 1;
+		if ($nl > 1) {
+			return $nl;
+		} else {
+			return 1;
+		}
 	}
 
 	private function parityCheck($msg, $bin) {
@@ -247,10 +389,13 @@ 
 		$crc = 0;
 		$checksum = intval(substr($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 == $checksum) return true;
-		else {
+		if ($crc == $checksum) {
+			return true;
+		} else {
 			//echo "**** CRC ERROR ****\n";
 			return false;
 		}
@@ -300,22 +445,37 @@ 
 			$msg['date_log'] = date('Y/m/d',$data['timestamp']);
 			$msg['time_log'] = date('H:i:s',$data['timestamp']).'.180';
 			$msg['callsign'] = '';
-			if (isset($data['altitude'])) $msg['altitude'] = $data['altitude'];
-			else $msg['altitude'] = '';
+			if (isset($data['altitude'])) {
+				$msg['altitude'] = $data['altitude'];
+			} else {
+				$msg['altitude'] = '';
+			}
 			$msg['speed'] = $data['speed'];
-			if (isset($data['heading'])) $msg['track'] = $data['heading'];
-			else $msg['track'] = '';
+			if (isset($data['heading'])) {
+				$msg['track'] = $data['heading'];
+			} else {
+				$msg['track'] = '';
+			}
 			$msg['latitude'] = $data['latitude'];
 			$msg['longitude'] = $data['longitude'];
-			if (isset($data['verticalrate'])) $msg['verticalrate'] = $data['verticalrate'];
-			else $msg['verticalrate'] = '';
-			if (isset($data['squawk'])) $msg['squawk'] = $data['squawk'];
-			else $msg['squawk'] = 0;
+			if (isset($data['verticalrate'])) {
+				$msg['verticalrate'] = $data['verticalrate'];
+			} else {
+				$msg['verticalrate'] = '';
+			}
+			if (isset($data['squawk'])) {
+				$msg['squawk'] = $data['squawk'];
+			} else {
+				$msg['squawk'] = 0;
+			}
 			$msg['alert'] = 0;
 			$msg['emergency'] = 0;
 			$msg['SPI'] = 0;
-			if (isset($data['ground'])) $msg['ground'] = 1;
-			else $msg['ground'] = 0;
+			if (isset($data['ground'])) {
+				$msg['ground'] = 1;
+			} else {
+				$msg['ground'] = 0;
+			}
 			$result[] = implode(',',$msg);
 		}
 		return $result;