php sort array values in ASC order

Question

Below is my array, I want to sort it:

$arr = array('0-3 months', '9-12 months', '3-6 months', '6-9 months', '12-18 months', '18-24 months');

It responds with sort function like :

Array
(
    [0] => 0-3 months
    [1] => 12-18 months
    [2] => 18-24 months
    [3] => 3-6 months
    [4] => 6-9 months
    [5] => 9-12 months
)

I want in below manner :

Array
(
    [0] => 0-3 months
    [1] => 3-6 months
    [2] => 6-9 months
    [3] => 9-12 months
    [4] => 12-18 months
    [5] => 18-24 months
)

Any solutions?

Thanks

Can it only be "x-y months" or are there other values? What about overlap? Etc. — Ja͢ck
– Ja͢ck, Commented Nov 19, 2014 at 6:36

sectus · Accepted Answer · 2014-11-19 06:29:17Z

4

You could use sort($arr, SORT_NUMERIC);. SORT_NUMERIC treats elements as numbers.

answered Nov 19, 2014 at 6:29

sectus

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Comments

Lalit Sharma · Accepted Answer · 2014-11-19 06:32:40Z

3

You can use natsort($arr); also

answered Nov 19, 2014 at 6:32

Lalit Sharma

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Comments

Ismail Saleh · Accepted Answer · 2014-11-19 06:26:31Z

2

Have you tried SORT_NATURAL ?

sort($arr, SORT_NATURAL | SORT_FLAG_CASE);

source: php sort manual

answered Nov 19, 2014 at 6:26

Ismail Saleh

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Comments

Rakesh Sharma · Accepted Answer · 2014-11-19 06:31:16Z

1

Try

$arr = array('0-3 months', '9-12 months', '3-6 months', '6-9 months', '12-18 months', '18-24 months');
foreach($arr as $v) {
 $e = explode('-', $v);
 $n1[] = $e[0];
 $n = explode(' ', $e[1]);
 $n2[] = $n[0];
}
sort($n1);
sort($n2);
for($i=0; $i<count($n1); $i++) {
  $newarr[] = $n1[$i].'-'.$n2[$i].' '.'months';
}
print_r($newarr);

output:-

Array
(
    [0] => 0-3 months
    [1] => 3-6 months
    [2] => 6-9 months
    [3] => 9-12 months
    [4] => 12-18 months
    [5] => 18-24 months
)

answered Nov 19, 2014 at 6:31

Rakesh Sharma

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