The record will be a string, 700 characters long. You will have an array of these strings. Each string, you should convert into an object or hash.
$record_strings = array(
'DATADATADATADATA...DATADATADATADATADATADATA',
'DATADATADATADATA...DATADATADATADATADATADATA',
'DATADATADATADATA...DATADATADATADATADATADATA',
'DATADATADATADATA...DATADATADATADATADATADATA',
'DATADATADATADATA...DATADATADATADATADATADATA',
'DATADATADATADATA...DATADATADATADATADATADATA',
);
$record_hashes = array_map(function($record_string) {
return array(
'COUNTY-DISTRICT' => substr($record_string, 0, 4),
'BLOCK' => substr($record_string, 4, 9),
'LOT' => substr($record_string, 13, 9),
...
);
}, $record_strings);
You now have an array of hashes that you can more easily do things with, like iterate over and insert into a database.