Misunderstanding of array_values

Question

I've a problem to unerstand correctly array_values, when I do:

$array[] = 'data1'; // I want [0 => 'data1']
unset($array[0]); // I want []
$array = array_values($array); // I want [] but keys resetted
$array[] = 'data2'; // I want [0 => 'data2']
$array[] = 'data3'; // I want [0 => 'data2', 1 => 'data3']
dump($array);

I've the result:

array:2 [▼
  1 => "data2"
  2 => "data3"
]

But I'll want:

array:2 [▼
  0 => "data2"
  1 => "data3"
]

Maybe someone can explain it to me ? Because I'm a little lost :-/

For exemple, if I've an array with 10 values in, remove the 3rd value, and do an array_values on, it works well.

But if I remove the last value from an array, then when I do a array_value, the next value I add, always have id 1 and not 0.

This has been answered before: https://stackoverflow.com/questions/5217721/how-to-remove-array-element-and-then-re-index-array — DragonZero, Dec 08 '17 at 13:28
@DragonZero I use array_values... But if the array is empty, it not work... If I've an array with 3 values, I remove the 2nd and do a array_values, keyes are redistributed correctly, but if array is empty, it do nothing... — mpiot, Dec 08 '17 at 13:30
@Sheppard The code you have returns with the correct indexes for me, I think I don't understand your question. https://eval.in/915447 — Ethan, Dec 08 '17 at 13:32
@pokeybit I've exactly the same issue if I declare it before... — mpiot, Dec 08 '17 at 13:32
@Sheppard Simple check to see if the array has any values use: if (count($array) > 0) { /*do work*/ } — DragonZero, Dec 08 '17 at 13:34
Clearly a behavioural difference between versions: https://3v4l.org/auHLM. Might want to consider filing a [bug report](http://bugs.php.net). — deceze, Dec 08 '17 at 13:35
@KresimirPendic array_values bug, it doesn't work when the array is empty — mpiot, Dec 08 '17 at 13:48

score 1 · Accepted Answer · answered Dec 08 '17 at 14:23

1

This behaviour has been already reported as a bug: https://bugs.php.net/bug.php?id=75433 and (apparently as the result of this post) also: https://bugs.php.net/bug.php?id=75653

answered Dec 08 '17 at 14:23

Jirka Hrazdil

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Misunderstanding of array_values

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