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polar.php
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<?php
require_once 'common.php';
$docs = array();
if(trim($_GET['query'])!=''){
$query = '@name '.trim($_GET['query']);
}
$latitude_deg = $_GET['latitude'];
$longitude_deg = $_GET['longitude'];
$latitude = deg2rad($_GET['latitude']);
$longitude = deg2rad($_GET['longitude']);
$maxdistance = (int)$_GET['maxdistance'];
$state_code = trim($_GET['state_code']);
$indexes = 'geodemo';
$geodist = '';
$where = array();
$order = '';
if(count($_GET)>0) {
if($state_code!='') {
$query .= " @state_code ".$state_code;
}
if($query!='') {
$where[] = "MATCH(".$ln_sph->quote($query).")";
}
if($latitude!=0 && $longitude!=0){
$geodist = ', SQRT(69.1*69.1*(latitude_deg - '.$latitude_deg.')*(latitude_deg - '.$latitude_deg.') + 53*53*(longitude_deg - '.$longitude_deg.')*(longitude_deg - '.$longitude_deg.')) as distance_miles';
$where[] = ' distance_miles < '.$maxdistance/1609;
$order = 'ORDER BY distance_miles ASC';
}
$sql = "SELECT *".$geodist." FROM ".$indexes." WHERE ".implode(' AND ',$where)." ".$order." LIMIT 0,100";
$results = $ln_sph->query($sql);
foreach($results as $r){
$docs[] = $r;
}
}else{
//center on US
$latitude = deg2rad(37.7750);
$longitude =deg2rad(-98.4183);
$maxdistance = 5000000;
}
$meta = $ln_sph->query("SHOW META LIKE 'total_found'")->fetch();
$total_found = $meta['Value'];
$meta = $ln_sph->query("SHOW META LIKE 'time'")->fetch();
$total_time = $meta['Value'];
?>
<?php
$title = 'Geo distance with Polar flat-Earth';
include 'template/header.php';
?>
<div id="map"></div>
<div class="container">
<div class="row">
<div class="span2">
<div class="sitebar-nav offset1"></div>
</div>
<div class="">
<div class="container">
<ul class="nav nav-pills">
<li><a href="index.php">Default Geo distance using havesine</a></li>
<li ><a href="poly_large.php">Search inside large polygon</a></li>
<li ><a href="poly_small.php">Search inside small polygon</a></li>
<li class="active"><a href="polar.php">Geo distance with Polar flat-Earth</a></li>
<li><a href="newgeodist.php">New GEODIST() options (2.2+)</a></li>
</ul>
<header>
<h1>Simple geo search</h1>
</header>
<div class="row">
<div class="span9">
<p>Right click on the map to set your starting pointer</p>
<div class="well form-search">
<form method="GET" action="" id="search_form"
class="form-horizontal">
<div class="control-group">
<label class="control-label" for="query">Text Search</label>
<div class="controls">
<input type="text" class="input-large" name="query" id="query"
autocomplete="off"
value="<?=isset($_GET['query'])?htmlentities($_GET['query']):'stadium'?>">
</div>
</div>
<div class="control-group">
<label class="control-label" for="latitude">latitude</label>
<div class="controls">
<input type="text" class="input-large" name="latitude"
id="latitude" autocomplete="off"
value="<?=isset($_GET['query'])?htmlentities($_GET['latitude']):'37.7750'?>">
</div>
</div>
<div class="control-group">
<label class="control-label" for="longitude">longitude</label>
<div class="controls">
<input type="text" class="input-large" name="longitude"
id="longitude" autocomplete="off"
value="<?=isset($_GET['query'])?htmlentities($_GET['longitude']):'-122.4183'?>">
</div>
</div>
<div class="control-group">
<label class="control-label" for="maxdistance">Maximum distance</label>
<div class="controls">
<select name="maxdistance" id="maxdistance">
<?php
$options = array(500 => '500',
1000 => '1km',
10000 => '10km',
50000 => '50km',
100000 => '100km',
250000 => '250km',
500000 => '500km',
700000 => '700km',
);
?>
<?php foreach($options as $value=>$option):?>
<option value="<?=$value?>" <?=($value==$maxdistance)?'selected':'';?>><?=$option?></option>
<?php endforeach;?>
</select>
</div>
</div>
<div class="control-group">
<label class="control-label" for="query">State code(optional)</label>
<div class="controls">
<input type="text" class="input-large" name="state_code" id="state_code"
autocomplete="off"
value="<?=isset($_GET['query'])?htmlentities($_GET['state_code']):''?>">
</div>
</div>
<div class="control-group">
<div class="controls">
<input type="submit" class="btn btn-primary" id="send"
name="send" value="Submit">
<button type="reset" class="btn " value="Reset">Reset</button>
</div>
</div>
</form>
</div>
</div>
</div>
<div class="row">
<?php if(isset($sql)):?>
<div class="alert alert-success">
<?=$sql?>
<hr>
Query time: <?=$total_time?>; Total found: <?=$total_found?>
</div>
<?php endif;?>
</div>
<?php
include 'template/footer.php';
?>