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php Programming Glossary: radius

Measuring the distance between two coordinates in PHP

http://stackoverflow.com/questions/10053358/measuring-the-distance-between-two-coordinates-in-php

lat_b this lat_a delta_lon this lon_b this lon_a earth_radius 6372.795477598 alpha delta_lat 2 beta delta_lon 2 a sin deg2rad.. sin deg2rad beta c asin min 1 sqrt a distance 2 earth_radius c distance round distance 4 this measure distance Testing it.. point in deg decimal @param float earthRadius Mean earth radius in m @return float Distance between points in m same as earthRadius..

php/mysql zip code proximity search

http://stackoverflow.com/questions/2410529/php-mysql-zip-code-proximity-search

a search function that searches for users within a 50 mile radius of a zip code. I have a zip code table that contains all the.. the users table and query it for all the users within the radius of the given zip code Or should I query the zip codes table.. zip codes table for all the zip codes that fall within the radius then query the users table for all the users with the results..

Proximity Search

http://stackoverflow.com/questions/260335/proximity-search

compute the numbers of all bins that intersect a 20 mile radius from your search point. Then retrieve all stores in any of those..

PHP MySql and geolocation

http://stackoverflow.com/questions/3606139/php-mysql-and-geolocation

a site that basically looks for places within a 25 mile radius of a lat and long using php and mysql. I am wondering how something..

How to efficiently find the closest locations nearby a given location

http://stackoverflow.com/questions/3922404/how-to-efficiently-find-the-closest-locations-nearby-a-given-location

what I have already php function getDistance point1 point2 radius 3958 Earth's radius miles pi 3.1415926 deg_per_rad 57.29578.. php function getDistance point1 point2 radius 3958 Earth's radius miles pi 3.1415926 deg_per_rad 57.29578 Number of degrees radian.. 57.29578 Number of degrees radian for conversion distance radius pi sqrt point1 'lat' point2 'lat' point1 'lat' point2 'lat'..

distance calculations in mysql queries

http://stackoverflow.com/questions/3986556/distance-calculations-in-mysql-queries

a circle on a map centred on your initial point and with a radius of distance then the formula simply identifies which rows fall..

Get Nearest Places Google Maps (MySQL Spatial Data)

http://stackoverflow.com/questions/4645490/get-nearest-places-google-maps-mysql-spatial-data

I would like to get a list of items from those within some radius like 1 km 5km etc What should be the algorithm I need the PHP..

Geo-Search (Distance) in PHP/MySQL (Performance)

http://stackoverflow.com/questions/5236921/geo-search-distance-in-php-mysql-performance

lat long pair. e.g. all entries that are within a 10km radius around 50.281852 2.504883 My problem is that this query takes..

MySQL Great Circle Distance (Haversine formula)

http://stackoverflow.com/questions/574691/mysql-great-circle-distance-haversine-formula

that will find the closest 20 locations that are within a radius of 25 miles to the 37 122 coordinate. It calculates the distance..

Finding towns within a 10 mile radius of postcode. Google maps API

http://stackoverflow.com/questions/8135243/finding-towns-within-a-10-mile-radius-of-postcode-google-maps-api

towns within a 10 mile radius of postcode. Google maps API I've recently started looking.. only show the nearest town but also any within a 5 10 mile radius. Could someone tell me how I would go about doing this please.. lat lng type 'cities' limit 50 distance 50 unit 'km' radius of earth @note the earth is not perfectly spherical but this..