PHP array - range key [duplicate] - php

Question

This question already has answers here:
PHP getting a value where key is between a range
(3 answers)
Closed 5 months ago.
I'd like to create an array with some keys will be a range of data.
Example:
$data = [
1 => 1000,
2 => 500,
3 => 250,
4 - 5 => 100,
6 - 10 => 50,
11 - 99 => 20
];
In this case, $data[4] should return 100. $data[53] should return 20, etc.
Is this possible without typing everything?
Thanks

Answer 1

Using array_fill():
<?php
$data = [
1 => 1000,
2 => 500,
3 => 250
];
$a = array_fill(4,2, 100);
$b = array_fill(6,5, 50);
$c = array_fill(11,89, 20);
$data = $data + $a + $b + $c;
print_r($data);

Answer 2

Naive solution without array_fill(). Memory efficient way.
<?php
function array_search_key_range(int $needle, array $haystack)
{
foreach ($haystack as $range => $value) {
[$min, $max] = array_map('intval', explode('-', (string)$range, 2) + [1 => $range]);
if ($min <= $needle && $needle <= $max) {
return $value;
}
}
return false;
}
$data = [
1 => 1000,
2 => 500,
3 => 250,
'4-5' => 100,
'6-10' => 50,
'11-99' => 20,
];
var_dump(array_search_key_range(2, $data)); // 500
var_dump(array_search_key_range(4, $data)); // 100
var_dump(array_search_key_range(10, $data)); // 50
var_dump(array_search_key_range(98, $data)); // 20
var_dump(array_search_key_range(120, $data)); // false

Answer 3

Well,
a bit clumsy but you might consider the following:
$data = array_merge([
0 => null,
1 => 1000,
2 => 500,
3 => 250,
],
array_map(function(){ return 100;}, range(4,5)),
array_map(function(){ return 50;}, range(6,10)),
array_map(function(){ return 20;}, range(11,99))
);

Answer 4

<?php
$data = [
'1' => 1000,
'2' => 500,
'3' => 250,
'4-5' => 100,
'6-10' => 50,
'11-99' => 20];
//Create a new array ($range_arr where you
//create a key for every item in the range specified by your key
//in your $data array
$range_arr = [];
foreach(array_keys($data) as $key) {
$exploded_key = explode('-', $key);
$start_range = $exploded_key[0];
$end_range = $start_range;
if (isset($exploded_key[1])) {
$end_range = $exploded_key[1];
}
foreach(range($start_range,$end_range) as $nr) {
$range_arr[$nr] = $data[$key];
}
}
//for example will output 50
echo $range_arr[7];