I know Memo fields "should" be able to contain up to 65536 characters, and I could verify this by inserting data directly into the database. However, when querying the database through PHP (using odbc), I could only retrieve 4000 characters.
The culprit? A tiny little setting called odbc.defaultlrl! (lrl = long read length). This can be changed in php.ini, or you can use ini_set to modify this setting directly in your php script:
I found this info on the discussion for the odbc_longreadlen function.
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