php - Iterating through a large db -

i tried using php 5.3 dbase extension, doesn't work reliably large databases on 2 gb. need way iterate through subsection of large dbf , have ability read/edit fields. can done (i use windows)?

first attempt:

table = dbf.table('myhugedbf.dbf')  #is way access dbf data?  #i need last 10k records opposed whole 4.5 gb beast   table.open()  in xrange(len(table)-10000, len(table)):     table[i].desc = (table[i].desc).replace("\n","")     print "*" + str(table[i].desc) + "*" #for debug purposes 

table = dbf.table('myhugedbf.dbf')  # way access dbf data? # yes.  above reads header, though, can basic # info dbf (size, field names, etc.)   table.open() # creates data structure 1 (small) element per record  record in table[-10000:]:     record:         record.desc = record.desc.replace('\n','')