<?php
function createCompressedString($shorts)
{
$compressLen = $compressPos = $currentLen = $currentPos = 0;
$inBlock = false;
for ($i = 0; $i < 8; $i++) {
if ($shorts[$i] === 0) {
if (!$inBlock) {
$inBlock = true;
$currentPos = $i;
}
$currentLen++;
} else if ($inBlock) {
if ($currentLen > $compressLen) {
$compressLen = $currentLen;
$compressPos = $currentPos;
}
$inBlock = false;
$currentPos = $currentLen = 0;
}
}
if ($inBlock) {
$compressLen = $currentLen;
$compressPos = $currentPos;
}
if ($compressLen === 8) {
return '::';
}
if ($compressLen > 1) {
$replace = $compressPos === 0 || $compressPos + $compressLen === 8 ? ['', ''] : [''];
array_splice($shorts, $compressPos, $compressLen, $replace);
}
return implode(':', array_map(function($short) {
return $short === '' ? '' : dechex($short);
}, $shorts));
}
var_dump(createCompressedString([1, 0, 0, 0, 0, 0, 0, 0]));
- Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- string(3) "1::"
- Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/arUbt on line 36
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/arUbt on line 36
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/arUbt on line 36
Process exited with code 255.
preferences:
255.75 ms | 401 KiB | 357 Q