function(unsigned int *a1, unsigned int b1)
{
v3 = *a1;
v4 = *(a1 + 1);
v5 = *(a1 + 2);
v6 = *(a1 + 3);
}
<?php
function split4bites ($input) {
$result = [];
$start = 0;
while ($start < strlen($input)) {
array_push($result, substr($input, $start, 4));
$start = $start + 4;
}
return $result;
}
$result = split4bites('jtoir75nsdt56odj');
print_r($result);