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I'm starting to know PHP and JavaScript, mixing them in HTML and using Google Maps API (version 3).
I figured how to 'put' various markers but the console will throw me an error:
" Uncaught InvalidValueError: setCenter: not a LatLng or LatLngLiteral object ".
I think it's because the var created in the loop is not exactly the object needed but instead a string, though this confuses me, I don't know if I'm right.
This is my code: (By the way, the array I'm looping is an array with an array with an array, here's some of it. It follows the pattern, there are in total 6 'places'):
$locations = array(
array(
'Location' => array(
'Title'=>'Place',
'Description'=>'Some Place',
'Image'=>'pin1.png',
'Latitude'=>'20.681775',
'Longitude'=>'-103.351479'
)
),…
(It continues…).
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map-canvas { height: 100% }
</style>
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?AIzaSyBVfO8LckdOHAot1a8rZW0bmJIoWO2A3os=API_KEY&sensor=true">
</script>
<script type="text/javascript">
function initialize() {
var mapOptions = {
center: (20.68177501, -103.3514794),
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map-canvas"),
mapOptions);
// To add the marker to the map, use the 'map' property
<?php $i = 0; ?>
<?php foreach($locations as $key => $value): ?>
<?php foreach($value as $key => $value): ?>
<?php foreach($value as $key => $value): ?>
<?php if($key == "Latitude"): ?>
<?php $myLatLng = "$value, "; endif;?>
<?php if($key == "Longitude"): ?>
<?php $myLatLng .="$value"; ?>
var myLatlng<?php echo $i; ?> = new google.maps.LatLng(<?php echo $myLatLng; ?>);
var marker<?php echo $i; ?> = new google.maps.Marker({
position: (myLatlng<?php echo $i; ?>),
title:"Hello World!"
});
marker<?php echo $i; ?>.setMap(map);
<?php $i++; ?>
<?php endif; ?>
<?php endforeach; ?>
<?php endforeach; ?>
<?php endforeach; ?>
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"/>
</body>
</html>
And here's a screenshot of that var assigning part:
307
You are initializing mapOptions in wrong way.
Initialize it in following way..
var mapOptions = {
center: new google.maps.LatLng(20.68177501, -103.3514794),
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
Instead of...
var mapOptions = {
center: (20.68177501, -103.3514794), //this is not correct
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
Following is corrected code...
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map-canvas { height: 100% }
</style>
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?AIzaSyBVfO8LckdOHAot1a8rZW0bmJIoWO2A3os=API_KEY&sensor=true">
</script>
<script type="text/javascript">
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(20.68177501, -103.3514794),
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map-canvas"),
mapOptions);
// To add the marker to the map, use the 'map' property
<?php $i = 0; ?>
<?php foreach($locations as $key => $value): ?>
<?php foreach($value as $key => $value): ?>
<?php foreach($value as $key => $value): ?>
<?php if($key == "Latitude"): ?>
<?php $myLatLng = "$value, "; endif;?>
<?php if($key == "Longitude"): ?>
<?php $myLatLng .="$value"; ?>
var myLatlng<?php echo $i; ?> = new google.maps.LatLng(<?php echo $myLatLng; ?>);
var marker<?php echo $i; ?> = new google.maps.Marker({
position: (myLatlng<?php echo $i; ?>),
title:"Hello World!"
});
marker<?php echo $i; ?>.setMap(map);
<?php $i++; ?>
<?php endif; ?>
<?php endforeach; ?>
<?php endforeach; ?>
<?php endforeach; ?>
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"/>
</body>
</html>
It is also worth noting that Google Maps v3 doesn't appear to sanitize the data values for setting markers. This seems to have changed in the last few weeks, because previously I was passing in icon height as a string for google's MarkerImage function (it is coming from JSON). But that suddenly broke because it wasn't a "number".
Obviously the solution is to pass in a number, or wrap your data in parseInt() or parseFloat() so that the API gets a number or float. Google "should" be sanitizing it's data but it isn't.
var custom_icon = new google.maps.MarkerImage(
icon_path,
new google.maps.Size(
parseInt(icon_options.width),
parseInt(icon_options.height)
),
new google.maps.Point(
parseFloat(icon_options.origin_x),
parseFloat(icon_options.origin_y)
),
new google.maps.Point(
parseFloat(icon_options.anchor_x),
parseFloat(icon_options.anchor_y)
)
);
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