PHP, Combining each array item to the previous ones - php

Question

I am building breadcrumbs and I would like to do it from all segments from the current url.
I am getting the array that looks like this
$segments = [0 =>'users',
1 =>'index',
2 =>'all'];
I'd like to combine the array in this way :
$routes = [ 0 =>'users',
1 =>'users/index',
2 =>'users/index/all'];
I have tried using array_map
$segs = array_map(function($a){return $a."/".$a;},$segments);
but it combines the same array item twice
Any help is appreciated.

Answer 1

This should work for you:
Just loop through each element and take an array_slice() from the start until the current element, which you then simply can implode() with a slash.
<?php
$segments = ["users", "index", "all"];
foreach($segments as $k => $v)
$result[] = implode("/", array_slice($segments, 0, ($k+1)));
print_r($result);
?>
output:
Array
(
[0] => users
[1] => users/index
[2] => users/index/all
)

Answer 2

If you want to do it using array_map() same as #Rizier123's method,
$segments = ['users','index','all'];
$routes = array_map(function($v, $k) use ($segments){
return implode('/', array_slice($segments, 0, ($k+1)));
}, $segments, array_keys($segments));

Answer 3

Use this code to fix this issue :
$arr = array(0 =>'users', 1 =>'index', 2 =>'all');
print_r(returnPath($arr));
function returnPath($urlArr = null){
$index = 1; $sep='';
$length = count($urlArr);
foreach($urlArr as $key => $item){
if($index > 1 && $index < $length){ $sep = '/'; }
$temp .= $sep.$item;
$urlArr[$key] = $temp;
$index++;
}
return $urlArr;
}

Answer 4

To avoid slicing and imploding on every iteration, you can concatenate and ltrim instead.
Code: (Demo)
$segments = ["users", "index", "all"];
var_export(
array_map(
function($v) {
static $path = '';
return ltrim($path .= "/$v", '/');
},
$segments
)
);
Output:
array (
0 => 'users',
1 => 'users/index',
2 => 'users/index/all',
)