Print or Display PHP array in Browser Console or in Javascript
Try adding JSON.parse in addition to what the others said - that way it gets console.log
ged as an object, meaning you can expand it and navigate it in Chrome like so.
echo "<script>console.log(JSON.parse('" . json_encode($data) . "'));</script>";
Source: https://alligator.io/js/json-parse-stringify/
Note: I understand this question is asking about arrays, so string is probably fine, but to represent more complex objects this works better.
Try using json_encode()
Example
echo "<script>console.log('" . json_encode($data) . "');</script>";