(PHP3 , PHP4 )
pg_fieldsize -- 
     Returns the internal storage size of the named field
    
Description
int pg_fieldsize (int result_id, int field_number)
     Pg_fieldsize() will return the internal
     storage size (in bytes) of the field number in the given
     PostgreSQL result. Field numbering starts at 0. A field size of
     -1 indicates a variable length field. This function will return
     false on error.