Check for duplicate key name instances in php array

Question

How would I best go about finding duplicate key names in an array in PHP? I'm trying to validate a POST array, and realized that I need to make sure that there aren't any duplicate key names.

Pascal MARTIN · Accepted Answer · 2011-03-15 22:47:00Z

3

In a PHP array, the key is what identifies an element -- so, there can be no duplicate key.

answered Mar 15, 2011 at 22:47

Pascal MARTIN

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4 Comments

Pascal MARTIN Over a year ago

Here I am :-) Haven't been arround for a couple of months ; been back a few weeks ; not sure how long I'll stay -- but, right now, I'm here ;-)

karim79 Over a year ago

Well, it's good to know that you still have an Internet, a computer, a browser, and a brain! :)

Pascal MARTIN Over a year ago

Thanks ^^ What I don't have enough, actually, is not internet/computer/browser -- it is time :-(

fredrikekelund Over a year ago

Alright, thanks, rethought the validation, so it's no longer a problem :)

konsolenfreddy · Accepted Answer · 2011-03-15 22:46:22Z

2

there can't be duplicate keys (only duplicate values).

The second added value to an array with the same key will overwrite the first.

answered Mar 15, 2011 at 22:46

konsolenfreddy

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