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48 lines
1.5 KiB
48 lines
1.5 KiB
<?php
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class distance
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{
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public function distentre2co($lat1, $lng1, $lat2, $lng2) {
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// Rayon de la Terre en mètres :
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$earth_radius = 6378137;
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// Calcul de la distance entre 2 coordonées GPS :
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$rlo1 = deg2rad($lng1);
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$rla1 = deg2rad($lat1);
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$rlo2 = deg2rad($lng2);
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$rla2 = deg2rad($lat2);
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$dlo = ($rlo2 - $rlo1) / 2;
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$dla = ($rla2 - $rla1) / 2;
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$a = (sin($dla) * sin($dla)) + cos($rla1) * cos($rla2) * (sin($dlo) * sin($dlo));
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$d = 2 * atan2(sqrt($a), sqrt(1 - $a));
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// Return la distance en mètre entre les deux coordonées
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return round($earth_radius * $d);
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}
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}
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class ListeUser
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{
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public function Liste() {
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$listeUser = ["001","002","003"];
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// Coordonées actuelles de l'User dans $lat1 et $lng1
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$lat1 = 45.891773;
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$lng1 = 4.662613;
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//parcours de toute les coordonées stockées dans le serveur PHP et entrée dans dist
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// for les co :
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$userID = "004";
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$dist = (new distance)->distentre2co($lat1,$lng1,45.777222,3.087025);
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if ($dist <= 100 ){
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$listeUser[] = $userID;
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}
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return $listeUser;
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}
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}
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/*
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echo "Normalement 597833 = ";
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echo (new distance)->distentre2co(48.86417880,2.34250440,43.6008177,3.8873392);
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*/
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echo "Normalement pas beaucoup = ";
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echo (new distance)->distentre2co(45.891773, 4.662613,45.777222,3.087025);
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echo "\nListe User = ";
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echo implode(",",(new ListeUser)->Liste());
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