I got a solution
$strmarkers[0] = array( 'lat' => -1.275292, 'lng' => 36.812072 ); $strmarkers[1] = array( 'lat' => -1.282243, 'lng' => 36.815677 );
$strmarkers[2] = array( 'lat' => -1.273801, 'lng' => 36.825859 );
?>
var mynewlocations = <?php echo json_encode($strmarkers, JSON_NUMERIC_CHECK); ?>