array_unique() not functioning as it should? [duplicate]

Question

I have an array in variable $votes. print_r($votes) gives us:

Array ( [0] => 1 [1] => 1 [2] => 1 )

So we have three values, all of which are set to 1.

Now, I want to make the array only have unique values, meaning that if there are three values that match 1, then remove two of them.

To achieve this, I tried array_unique($votes); but it did not remove any values. Why?!

Rizier123 · Accepted Answer · 2015-01-10 16:40:23Z

3

You have to assign the output of array_unique to the array again like this:

$votes = array_unique($votes);

And a quote from there:

Takes an input array and returns a new array without duplicate values.

answered Jan 10, 2015 at 16:40

Rizier123

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5 Comments

Kindly point a gun right to my head. Thanks. I just realised this mistake :)

Question, how did you realise I made this mistake? I can't see how you noticed this via my question. Good catch nonetheless.

@HenrikPetterson Because you wrote: I tried array_unique($votes); So without the assignment

In that case, just approve the answer.

@Sylverdrag There is a 15 min delay before I can mark it as fixed :)