<?php
$array = [1,1,1,2,2,3,3,4,1,1,2,2,3];
var_export(
json_decode(
preg_replace_callback(
'/\b(\d+)(?:,\1)*\b/',
function($m) {
return sprintf(
'{"%d":%d}',
$m[1],
count(explode(',', $m[0]))
);
},
json_encode($array)
),
true
)
);
- Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
- array (
0 =>
array (
1 => 3,
),
1 =>
array (
2 => 2,
),
2 =>
array (
3 => 2,
),
3 =>
array (
4 => 1,
),
4 =>
array (
1 => 2,
),
5 =>
array (
2 => 2,
),
6 =>
array (
3 => 1,
),
)
- Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
array (
0 =>
array (
1 => 3,
),
1 =>
array (
2 => 2,
),
2 =>
array (
3 => 2,
),
3 =>
array (
4 => 1,
),
4 =>
array (
1 => 2,
),
5 =>
array (
2 => 2,
),
6 =>
array (
3 => 1,
),
)
preferences:
144.81 ms | 408 KiB | 5 Q