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· #1 Buy my domains.
Name: Dan
Join Date: Feb 2006
Posts: 2,801
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Distance between longitudes and latitudes
PHP Code:
<?php
// Example points
$lat1 = '117.1216' ;
$lon1 = '32.69460' ;
$lat2 = '117.0516' ;
$lon2 = '32.70614' ;
deg_to_rad ( $deg ) {
$radians = 0.0 ;
$radians = $deg * M_PI / 180.0 ;
$radians );
$distance = 3956 * 2 * atan2 ( sqrt ( pow ( sin (( deg_to_rad ( $lat2 ) - deg_to_rad ( $lat1 ))/ 2.0 ), 2 ) + cos ( $lat1 ) * cos ( $lat2 ) * pow ( sin (( deg_to_rad ( $lon2 ) - deg_to_rad ( $lon1 ))/ 2.0 ), 2 )), sqrt ( 1 -( pow ( sin (( deg_to_rad ( $lat2 ) - deg_to_rad ( $lat1 ))/ 2.0 ), 2 ) + cos ( $lat1 ) * cos ( $lat2 ) * pow ( sin (( deg_to_rad ( $lon2 ) - deg_to_rad ( $lon1 ))/ 2.0 ), 2 ))));
$distance ; // Miles between the points.
?>
I'm working on a script related to this and I found this pretty amazing, so I thought I'd post it.
· #2 Senior Member
Name: Josh Evans
Location: Ohio
Join Date: Aug 2005
Posts: 1,704
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Wow...thanks for the share.
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· #3 Senior Member
Name: Bharat Balegere
Location: Bangalore
Join Date: Jul 2005
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This is basically Maths.
· #4 Buy my domains.
Name: Dan
Join Date: Feb 2006
Posts: 2,801
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Originally Posted by bbalegere This is basically Maths.
Did anyone say anything had to be hard to be posted? I highly doubt you could figure that out anyways.
· #5 Law and disorder
Name: Kate
Location: Expat
Join Date: Aug 2005
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Anybody have good sources for location databases ?
· #6 Buy my domains.
Name: Dan
Join Date: Feb 2006
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· #7 NamePros Regular
Join Date: Apr 2006
Posts: 252
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thanks for the share Dan.. was wondering how they figure that out.
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