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Re: use of array_key_exists() to prevent duplicates? [message #173043 is a reply to message #173041]

Fri, 18 March 2011 17:17

William Gill
Messages: 31
Registered: March 2011

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On 3/18/2011 12:46 PM, Captain Paralytic wrote:
> On Mar 18, 4:34 pm, William Gill<nos...@domain.invalid> wrote:
>> On 3/18/2011 12:15 PM, Captain Paralytic wrote:> Well actually I'm not clear from your OP what you really need. If the
>>> source program produces duplicates of old records as well as new ones,
>>> then provided that the new records come after the old ones, I would
>>> assume that the one you wanted to end up with was the latest one and
>>> so you would not want to use either array_key_exists() or isset().
>>
>> To answer your question, not mentioned in the OP, but mentioned
>> subsequently, edits to the memo field should be maintained.
>
> I did read that, but it doesn't say whether the edit record is the
> first one or the last one. It is this that decides what one you wish
> to keep.

I'm taking info from reports outside of my control or I would edit
records directly, and this exercise would be unnecessary. I take the
flat file output (report) and create a new flat file db with my
edits/additions for tracking, and analysis. I can easily add additional
fields like comments or status. The problem is the "snapshots" from the
source repeat some old records along any new records. I need to capture
only the new ones, message them and update my file. Fortunately source
records have unique serial numbers (transaction numbers) so I can easily
determine if a record has been seen/processed or not.

Sounded like a good candidate for a SQL db, but after initial analysis I
decided that would be a single table db, and was overkill at this time.

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[Message index]

		use of array_key_exists() to prevent duplicates? By: William Gill on Thu, 17 March 2011 15:35
		Re: use of array_key_exists() to prevent duplicates? By: Captain Paralytic on Thu, 17 March 2011 15:58
		Re: use of array_key_exists() to prevent duplicates? By: William Gill on Thu, 17 March 2011 17:09
		Re: use of array_key_exists() to prevent duplicates? By: Captain Paralytic on Fri, 18 March 2011 10:05
		Re: use of array_key_exists() to prevent duplicates? By: William Gill on Fri, 18 March 2011 15:06
		Re: use of array_key_exists() to prevent duplicates? By: Captain Paralytic on Fri, 18 March 2011 16:15
		Re: use of array_key_exists() to prevent duplicates? By: William Gill on Fri, 18 March 2011 16:34
		Re: use of array_key_exists() to prevent duplicates? By: Captain Paralytic on Fri, 18 March 2011 16:46
		Re: use of array_key_exists() to prevent duplicates? By: William Gill on Fri, 18 March 2011 17:17

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