Oihana PHP

bearing.php

Table of Contents

Functions

bearing()  : float
Calculates the initial bearing (sometimes referred to as forward azimuth) which if followed in a straight line along a great-circle arc will take you from the start point to the end point (in degrees).

Functions

bearing()

Calculates the initial bearing (sometimes referred to as forward azimuth) which if followed in a straight line along a great-circle arc will take you from the start point to the end point (in degrees).

bearing(float $latitude1, float $longitude1, float $latitude2, float $longitude2) : float
Parameters
$latitude1 : float

The first latitude coordinate in degrees.

$longitude1 : float

The first longitude coordinate in degrees.

$latitude2 : float

The second latitude coordinate in degrees.

$longitude2 : float

The second longitude coordinate in degrees.

Tags
example 
$position1 = [ 'x' => 37.422045 , 'y' => -122.084347 ]; // Google HQ
$position2 = [ 'x' => 37.77493  , 'y' => -122.419416 ]; // San Francisco, CA

echo bearing($position1['x'], $position1['y'], $position2['x'], $position2['y']);
// 323.1477743368166
author

Marc Alcaraz (ekameleon)

since
1.0.0
Return values
float —

The bearing in degrees from North.


        

        
    




    

    

                                

                

                            
    

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