## Placing distance into variable from geocoordinates script (1 post)

1. weslebsack
Member
Posted 11 months ago #

Hi Everyone,
I'm building out a loop that I want to be able to display the distance in miles for each post based on variables containing the coordinates of one point and the coordinates of another. I have point A and B's individual latitude and longitude values inside of custom fields.

I found a script that is a good starting point, but no matter how I try to place Point A and B's values, it crashes and the page either quits loading at that point, or I get the PHP white screen of death.

Here's the script I'm starting from:

``````<?php
function distance(\$lat1, \$lon1, \$lat2, \$lon2, \$unit) {

\$theta = \$lon1 - \$lon2;
\$dist = acos(\$dist);
\$miles = \$dist * 60 * 1.1515;
\$unit = strtoupper(\$unit);

if (\$unit == "K") {
return (\$miles * 1.609344);
} else if (\$unit == "N") {
return (\$miles * 0.8684);
} else {
return \$miles;
}
}

echo distance(32.9697, -96.80322, 29.46786, -98.53506, "M") . " Miles<br>";

?>``````

And here's an example of how I've tried getting the variables into the script:

``````<?php
function distance(\$lat1, \$lon1, \$lat2, \$lon2, \$unit) {

\$theta = \$lon1 - \$lon2;
\$dist = acos(\$dist);
\$miles = \$dist * 60 * 1.1515;
\$unit = strtoupper(\$unit);

if (\$unit == "K") {
return (\$miles * 1.609344);
} else if (\$unit == "N") {
return (\$miles * 0.8684);
} else {
return \$miles;
}
}

echo distance('.\$a_lat.', '.\$a_long.', '.\$b_lat.', '.\$b_long.', "M") . " Miles<br>";

?>``````

My question is: How can I properly echo out the variables into this script so that it shows up with each post in the loop?

Thanks!