PHP - get first value from array with single line using native functions

Question

I have a function asdf() that returns an array ["key" => "value"]. I would like to print out value with one line, but reset() function suggested in similar questions does not work for me because reset only takes variable as a argument and doesent accept function. So if i try reset(asdf()) i get an exception: "Only variables should be passed by reference".

So my question is how can i print "value" from asdf() in a single line only using php native functions.

Shouldn't `asdf()['key']` suffice if you know what the key is in advance? — B. Fleming, Jan 20 '18 at 23:26
I guess that might work https://stackoverflow.com/a/6698541/853041 — Mister Henson, Jan 20 '18 at 23:33

score 1 · Accepted Answer · answered Jan 20 '18 at 23:26

1

Actually reset function used to move the array's internal pointer to the first element, I think you must use current function that is return the current element in an array
Try like this

print current(asdf());

answered Jan 20 '18 at 23:26

Rassoul

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16

You have no guarantee this will return the first element unless you call reset first. – dhinchliff Jan 21 '18 at 00:21
@dhinchliff when you call function it returns a new fresh array that its pointer is pointing to the first element – Rassoul Jan 21 '18 at 07:05
This is the best solution for me because my array will always have only one value. – user1985273 Jan 21 '18 at 09:12

score 1 · Answer 2 · answered Jan 21 '18 at 00:37

Try this:

current(array_values(asdf()));

It uses current to avoid the pass by reference error and array_values to ensure the array passed to current has the first element as it's current element.

Though unless you have a very good reason assigning the array to a variable and then using reset would be better.

PHP - get first value from array with single line using native functions

2 Answers2