Add a word to every array value

Question

I have an array that needs some modification, I need to add a word before every value. Is there a easy way to do this?

[
'site'=>'some-slug-of-page',
'site'=>'some-slug-new-page',
'site'=>'my-page'
]

needs to be

[
'site'=>'blog/some-slug-of-page',
'site'=>'blog/some-slug-new-page',
'site'=>'blog/my-page'
]

Additionally, I guess the example is illustrative only, because you use the same key for different values. That will overwrite the proceeding values. — OptimusCrime, Jan 19 '18 at 11:01
Your array contains only one value. Duplicate keys are not preserved, only the last one counts. — axiac, Jan 19 '18 at 11:02

score 0 · Answer 1 · answered Jan 19 '18 at 11:02

For the sake of immutability, I create a new array, reusing the old keys.

$originalArr = [
    'site1' => 'some-slug-of-page',
    'site2' => 'some-slug-new-page',
    'site3' => 'my-page'
];

$newArr = [];

foreach ($originalArr as $key => $value) {
    $newArr[$key] = 'blog/' . $value;   
}

score -1 · Answer 2 · answered Jan 19 '18 at 11:02

-1

array_walk($arr, function (& $val, $key) { $val = 'blog/' . $val;});

answered Jan 19 '18 at 11:02

Andrey Yerokhin

273
1
7

Thank you for this code snippet, which might provide some limited short-term help. A proper explanation would greatly improve its long-term value by showing why this is a good solution to the problem and would make it more useful to future readers with other, similar questions. Please edit your answer to add some explanation, including the assumptions you've made – Shawn C. Jan 19 '18 at 15:22

Add a word to every array value

2 Answers2