PHP sort associative array by numeric key in asc order

Question

I have a problem with ksort, it is print_r'ing 1 instead of the array.

Here is my array:

Array(

[1] => Array
    (
        [time] => 08:30 am
        [time_id] => 48451
    )

[0] => Array
    (
        [time] => 09:00 am
        [time_id] => 48452
    )

[2] => Array
    (
        [time] => 09:30 am
        [time_id] => 48453
    )

)

And ksort($array) is vardumping bool(true). Why is it not sorting my array appropriately?

echo '<pre>';
print_r($array);
$array = ksort($array);
var_dump($array);

Read the docs... it returns `true` on success but the array is altered . http://us2.php.net/ksort — Jasper, Aug 22 '13 at 15:49
Do not reassign array its return boolean(true/false). See the https://www.php.net/manual/en/function.ksort.php — Vinay Kaithwas, Sep 16 '20 at 10:07

Jason McCreary · Accepted Answer · 2014-10-09T15:33:27.827

4

Why is it not sorting my array appropriately?

ksort() works on the array directly and returns a bool - returning true on success and false otherwise.

print_r() outputs 1 (i.e. true) because ksort() successfully sorted the array.

Don't reassign $array.

edited Oct 09 '14 at 15:33

answered Aug 22 '13 at 15:49

Jason McCreary

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PHP sort associative array by numeric key in asc order

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