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Re: use of array_key_exists() to prevent duplicates? [message #173040 is a reply to message #173039]

Fri, 18 March 2011 16:34

William Gill
Messages: 31
Registered: March 2011

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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.
>
> If you want the first occurrence then all the benchmark tests show
> isset() being much more efficient than array_key_exists().
.... and this answers mine. It's easy enough to take an isset() approach
vise array_key_exists(), and still come up with what I need.

Thanks.

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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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