What are some common pitfalls when passing PHP variables to JavaScript for use in Google Maps API?

One common pitfall when passing PHP variables to JavaScript for use in Google Maps API is not properly escaping the variables, which can lead to syntax errors or vulnerabilities. To solve this, you can use json_encode() to safely encode the PHP variables into a JSON format that can be easily passed to JavaScript. 

<?php
// Sample PHP variable
$location = "New York";

// Encode the PHP variable into JSON format
$location_json = json_encode($location);
?>

<script>
// Pass the encoded PHP variable to JavaScript
var location = <?php echo $location_json; ?>;

// Now you can use the variable in Google Maps API
console.log(location);
</script>

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