Obtém latitude e longitude do site latlong.net via cURL (PHP) - Facebook - PHP Brasil - https://www.facebook.com/groups/142151625841770/permalink/2151325014924411/

getLatLon.php

<?php
//Altere somente a variável abaixo:
$endereco = "Avenida Paulista, 1000 São Paulo SP BR";

//Não altere nada daqui caso não saiba o que cada coisa faz!
$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => "https://www.latlong.net/_spm4.php",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "c1=".urlencode($endereco)."&action=gpcm&cp=",
  CURLOPT_HTTPHEADER => array(
    "Content-Type: application/x-www-form-urlencoded",
    "x-requested-with: XMLHttpRequest"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);
if($err)
    die($err);
list($lat, $lon) = explode(",", $response);

//exibe a latitude e a longitude na página:
echo "Latitude: " . $lat;
echo "<br/>";
echo "Longitude: " . $lon;
?>