Sort an array of filepath strings naturally [duplicate]

Question

I have this array:

Array (
    [0] => ../files/flv/1
    [1] => ../files/flv/10
    [2] => ../files/flv/2
    [3] => ../files/flv/3
    [4] => ../files/flv/4
    [5] => ../files/flv/5
    [6] => ../files/flv/6
    [7] => ../files/flv/7
    [8] => ../files/flv/8
    [9] => ../files/flv/9
)

I need to sort it this way:

Array (
    [0] => ../files/flv/1
    [1] => ../files/flv/2
    [2] => ../files/flv/3
    [3] => ../files/flv/4
    [4] => ../files/flv/5
    [5] => ../files/flv/6
    [6] => ../files/flv/7
    [7] => ../files/flv/8
    [8] => ../files/flv/9
    [9] => ../files/flv/10
)

I tried to use sort($array,SORT_NUMERIC);, but no luck because of this prefix ../files/flv/

I know only this solution: $array2 = array_map('basename', $array); and then sort($array2,SORT_NUMERIC);

Is there any other solutions not so complex?

SORT_NATURAL is not working because of two dotes at start in "../files/flv/". — kostya572
– kostya572, Commented Sep 14, 2014 at 19:03
I tested SORT_NATURAL before I added my answer. Updated it with the test code now. — Gergo Erdosi
– Gergo Erdosi, Commented Sep 14, 2014 at 19:06
Gergo Erdosi i tested it on my server and here writecodeonline.com/php, but it's not working. Maybe it's because of OS in server. I use CentOS 6. — kostya572
– kostya572, Commented Sep 14, 2014 at 19:11
@user2337706 You can use natsort(), see my updated answer. — Gergo Erdosi
– Gergo Erdosi, Commented Sep 14, 2014 at 19:20
@user2337706 You can reindex the array after calling natsort(): $array = array_values($array); — Gergo Erdosi
– Gergo Erdosi, Commented Sep 14, 2014 at 19:26

Gergo Erdosi · Accepted Answer · 2014-09-14 19:16:19Z

4

Use SORT_NATURAL instead of SORT_NUMERIC (requires PHP 5.4.0 or latest):

sort($array, SORT_NATURAL);

EDIT: I used this code to test it:

$array = array(
  '../files/flv/1',
  '../files/flv/10',
  '../files/flv/2'
);

sort($array, SORT_NATURAL);
print_r($array);

It outputs:

Array
(
    [0] => ../files/flv/1
    [1] => ../files/flv/2
    [2] => ../files/flv/10
)

EDIT 2: Alternatively you can use the natsort() function, it works on older versions too:

natsort($array);

edited Sep 14, 2014 at 19:16

answered Sep 14, 2014 at 18:58

Gergo Erdosi

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Comments

Pulkit · Accepted Answer · 2014-09-14 19:00:16Z

0

If "../files/flv/" path is always same you can try using str_replace function on all elements and then do sorting using sort numeric and later add same path back to all elements.

So three steps are:

Use foreach loop over array and use str_replace() function on ecah element.
do sorting as you did using sort numeric.
Use foreach loop over array and put the constant path back as prefix.

To make it more perfect you can do this by creating your own function and pass path as parameter.

answered Sep 14, 2014 at 19:00

Pulkit

1375 bronze badges

Comments

Lucas Vieira · Accepted Answer · 2014-09-14 18:59:09Z

-1

Have you tried without the SORT_NUMERIC flag?

answered Sep 14, 2014 at 18:59

Lucas Vieira

1319 bronze badges

1 Comment

Karoly Horvath Over a year ago

have you tried it? BTW, in my experience, answers suggesting 'trying' something are usually wrong here on SO... just a thought.

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