PHP array_map() always change my first index value to zero value

Question

I have a controller in Laravel

This is my collection

$milestones = $this->getmilestones();
dump($milestones);

and the value is

array:3 [▼
  0 => "["109"
  1 => "110"
  2 => "111"]"
]

And I tried this code based on the answer here. So, I have code like this

array_unshift($milestones, $milestones[0]);
unset($milestones[0]);
dump($milestones);

and the value is (index was changed)

array:3 [▼
  1 => "["109"
  2 => "110"
  3 => "111"]"
]

So, after unshifting the collections, I tried to use array_map to convert array of strings to array of integers.

$milestones = array_map('intval', $milestones);
dump($milestones);

But, I still got the same value. The first index returns 0 like this

array:3 [▼
  1 => 0
  2 => 110
  3 => 111
]

What should I do?

Are you trying to re-key the array after converting the values to ints, like: `[1 => 109, 2 => 110, 3 => 111]`? — Brian Lee, Nov 23 '18 at 03:35
My expected result is array of string converted to array of integer and the first index not 0. the collections value is ("109" "110" "111") and I want result (109 110 111). But in this case the first index changed to 0 like this (0 110 111) — M. Syafi'i Asy'ari, Nov 23 '18 at 03:49
`array_values(array_map('intval', $this->getmilestones()))` should work. — Brian Lee, Nov 23 '18 at 04:02
You seem to have an odd set of double quotes `0 => "["109"` and `2 => "111"]"`. Is it being output as a string? Have a look here, is this what you're trying to achieve? https://repl.it/repls/HungryScholarlyReality — Brian Lee, Nov 23 '18 at 04:35

score 0 · Answer 1 · answered Nov 23 '18 at 03:37

0

Try this one

array_splice($milestone, 0, 1);
dump($milestone);

answered Nov 23 '18 at 03:37

the result like this array:2 [▼ 0 => "110" 1 => "111"]" ] 109 removed. But I need all the value – M. Syafi'i Asy'ari Nov 23 '18 at 03:51

Adam Rodriguez · Answer 2 · 2018-11-23T04:43:55.923

0

Use array_values this should re-index your array the way you need it:

$milestones = array_values($milestones);

If $milestones is a collection:

$milestones = $milestones->values();

The method values() will call array_values on your items defined in your collection instance.

edited Nov 23 '18 at 04:43

answered Nov 23 '18 at 03:54

Adam Rodriguez

score 0 · Accepted Answer · answered Nov 23 '18 at 04:29

0

Ah, finally I got the results that I wanted. I try to remove square brackets and double quote. Because milestones is collection. So my code is

$milestones = str_replace(array('[', ']', '"'),'',$milestones);

Thank you all for your help

answered Nov 23 '18 at 04:29

If `$milestones` is a collection and you want a zero based index array use the method `->values()` on your collection. – Adam Rodriguez Nov 23 '18 at 04:34

3 Answers3