How to pass array values from PHP to JavaScript? -


okay. i've been here day, reading , following solutions topic got nothing. nothing works. can show me how it, complete , understandable example. im new javascript , php, how can array values php file javascript. tried doing this: var locations = <?php echo json_encode($location); ?>; gives me error. , no 1 answered why. code here: 

<!doctype html>  <html>   <head>     <meta http-equiv="content-type" content="text/html; charset=utf-8" />     <title>google maps multiple markers</title>     <script src="http://maps.google.com/maps/api/js?sensor=false"             type="text/javascript"></script>  </head>   <body>    <div id="map" style="width: 500px; height: 400px;"></div>      <script type="text/javascript">      var locations = [    ['municipal hall', 6.414333734068895, 125.61093270778656, 1],    ['camarillo household', 6.4345278, 125.58975, 2],    ['perez household', 6.4343889, 125.59202777777777, 3],    ['usman household', 6.4338056, 125.59191666666666, 4],    ['lim household', 6.4333889, 125.59419444444444, 5]  ];        var map = new google.maps.map(document.getelementbyid('map'), {        zoom: 10,        center: new google.maps.latlng(6.40, 125.60),        maptypeid: google.maps.maptypeid.roadmap      });        var infowindow = new google.maps.infowindow();        var marker, i;        (i = 0; < locations.length; i++) {          marker = new google.maps.marker({          position: new google.maps.latlng(locations[i][1], locations[i][2]),          map: map        });          google.maps.event.addlistener(marker, 'click', (function(marker, i) {          return function() {            infowindow.setcontent(locations[i][0]);            infowindow.open(map, marker);          }        })(marker, i));      }    </script>  </body>  </html>

i want change value of variable locations value database. got php file:

<?php  $servername = "host";  $username = "username";  $password = "password";  $dbname = "dbname";    // create connection  $conn = mysqli_connect($servername, $username, $password, $dbname);  // check connection  if (!$conn) {      die("connection failed: " . mysqli_connect_error());  }    	$sql='select a.household_name, b.latitude, b.longitude household a, location b a.household_id = b.household_id;';  	$result = mysqli_query($conn, $sql);  		  	if(mysqli_num_rows($result) > 0){  		// output data of each row  		  		for($i=0;$i<mysqli_num_rows ( $result );$i++){  			$row=mysqli_fetch_row($result);    			$location[]= array($row[0].', '.$row[1].', '.$row[2].','.($i+1));  			//echo "household name: " . $row[0]. " - latitude: " . $row[1]. " - longitude " . $row[2]. " " .($i+1)."<br>";  		}  		  	}else{echo "0 results";}  ?>

it works fine. outputs data database. want know how can convert value database value can use in place of locations variable markers appear on map? var locations = <?php echo json_encode($location); ?>; guy give me error, followed every instruction can, still it's error. can u modify code works or can u point me out in working/functional code there knowledge. please, me. i'm in deep trouble here.

try change location[] variable :

$location[]= array($row[0].', '.$row[1].', '.$row[2].','.($i+1));

to 

$location[]= array($row[0],$row[1],$row[2],($i+1));

i have added full code below , working :

<?php $servername = "host"; $username = "username"; $password = "password"; $dbname = "dbname";  // create connection $conn = mysqli_connect($servername, $username, $password, $dbname); // check connection if (!$conn) {     die("connection failed: " . mysqli_connect_error()); }  $sql='select a.household_name, b.latitude, b.longitude household a, location b a.household_id = b.household_id;'; $result = mysqli_query($conn, $sql);  if(mysqli_num_rows($result) > 0){     // output data of each row      for($i=0;$i<mysqli_num_rows ( $result );$i++){         $row=mysqli_fetch_row($result);          $location[]= array($row[0],$row[1],$row[2],($i+1));         //echo "household name: " . $row[0]. " - latitude: " . $row[1]. " - longitude " . $row[2]. " " .($i+1)."<br>";     } }else{echo "0 results"; } ?> <!doctype html> <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>google maps multiple markers</title> <script src="http://maps.google.com/maps/api/js?sensor=false"     type="text/javascript"></script> </head> <body>     <div id="map" style="width: 500px; height: 400px;"></div>      <script type="text/javascript">     /*var locations = [   ['municipal hall', 6.414333734068895, 125.61093270778656, 1],   ['camarillo household', 6.4345278, 125.58975, 2],   ['perez household', 6.4343889, 125.59202777777777, 3],   ['usman household', 6.4338056, 125.59191666666666, 4],   ['lim household', 6.4333889, 125.59419444444444, 5] ];*/ var locations = <?php echo json_encode($location); ?>;       var map = new google.maps.map(document.getelementbyid('map'), {       zoom: 10,       center: new google.maps.latlng(6.40, 125.60),       maptypeid: google.maps.maptypeid.roadmap     });      var infowindow = new google.maps.infowindow();      var marker, i;      (i = 0; < locations.length; i++) {         marker = new google.maps.marker({         position: new google.maps.latlng(locations[i][1], locations[i][2]),         map: map       });        google.maps.event.addlistener(marker, 'click', (function(marker, i) {         return function() {           infowindow.setcontent(locations[i][0]);           infowindow.open(map, marker);         }       })(marker, i));     }   </script> </body> </html>

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