Finally!

Working backwards I went through every item, which took a while, but I finally ended up back in MySQL and here's what I've deduced:

Not every "age" field had a value, in MySQL. Therefore when any particular record with a null "age" came up in the my $json = encode_json($arrayref, $typehint_raws) command, Perl reported the uninitialized warning, yet still produced the proper json output.

So the solution was to make sure that there are no NULL fields in MySQL.

Thanks for everyone's help

Making sure to cast my votes on this thread

In reply to Re^6: Is there a way to make a JSON out of multiple records from MySQL? by bartender1382
in thread Is there a way to make a JSON out of multiple records from MySQL? by bartender1382

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