I have a list of domains (array)
sub1.dom1.tld1
sub2.dom2.tld2
sub1.sub2.dom1.tld1
sub3.dom1.tld3
I want to achieve the following:
dom1.tld1
-> sub1.dom1.tld1
-> sub2.dom1.tld1
--> sub1.sub2.dom1.tld1
dom2.tld2
-> sub2.dom2.tld2
dom1.tld3
-> sub3.dom1.tld3
I have tried to adapt this, but it doesn't really fit:
How to alphabetically sort a php array after a certain character in a string
I would appreciate any kind of help.
I've had to attack a similar headache before. In the short term I flip the order of the domain components and use a hidden sorting column in a table/view:
$sortstring = implode('.',array_reverse(explode('.', $domain)));
In the long term I saved the reverse format of the domain records before saving changes to the DB into a computed field/column so that it didn't have to be re-computed every time the domain list is viewed.
If you don't want that sub-domain, just remove the last element of the array after the flip....
You can proceed like this:
$array=array(
'sub1.dom1.tld1',
'sub2.dom2.tld2',
'sub1.sub2.dom1.tld1',
'sub2.sub2.dom1.tld1',
'sub3.sub2.dom1.tld1',
'sub3.dom1.tld3');
function cmp($a,$b){
$a=array_reverse(explode('.',$a));
$b=array_reverse(explode('.',$b));
$ca=count($a);
$cb=count($b);
$string='';;
for($i=0,$c=min($ca,$cb);$i<$c;$i++){
$result=strnatcmp($a[$i],$b[$i]);
if($result!==0) return $result;
}
return $result;
}
usort($array,'cmp');
print_r($array);
and the output is:
Array
(
[0] => sub1.dom1.tld1
[1] => sub1.sub2.dom1.tld1
[2] => sub2.sub2.dom1.tld1
[3] => sub3.sub2.dom1.tld1
[4] => sub2.dom2.tld2
[5] => sub3.dom1.tld3
)
Here is an approach similar to #Elementary answer combine to #CBO one:
$domains = [
'sub.bbb.com',
'www.aaa.com',
'*.zzz.com',
'aaa.com',
'*.sub.bbb.com',
'zzz.com',
'beta.bbb.com',
'bbb.com',
'aaa.fr',
];
// #see https://stackoverflow.com/a/61461912/1731473
$computeDomainToSort = static function (string $domain): string {
return \implode(
'.',
array_reverse(
explode('.', $domain,
// Keep the base domain.tld collapsed for comparison.
substr_count($domain, '.')
)
)
);
};
\usort($this->domains, static function (string $domain1, string $domain2) use ($computeDomainToSort): int {
$domain1 = $computeDomainToSort($domain1);
$domain2 = $computeDomainToSort($domain2);
return strnatcmp($domain1, $domain2);
});
That way, given domains will be sorted like this:
aaa.com
www.aaa.com
aaa.fr
bbb.com
beta.bbb.com
sub.bbb.com
*.sub.bbb.com
zzz.com
*.zzz.com
The main difference is on the $computeDomainToSort lambda function, where I keep the base domain.tld onto one piece to have a more natural sorting.
Related
function values($id,$col)
{
$vals = [1=>['name'=>'Lifting Heavy Boxes']];
return $vals[$id][$col];
}
$complete = [1=>["id"=>"2","sid"=>"35","material_completed"=>"1","date"=>"2017-12-18"]];
$form = 'my_form';
array_walk($complete, function(&$d,$k) use($form) {
$k = values($k, 'name').' ['.date('m/d/y',strtotime($d['date'])).'] ('.$form.')';
echo 'in walk '.$k."\n";
});
print_r($complete);
the echo outputs:
in walk Lifting Heavy Boxes [12/18/17] (my_form)
the print_r outputs:
Array
(
[1] => Array
(
[id] => 2
[sid] => 35
[material_completed] => 1
[date] => 2017-12-18
)
)
I have another array walk that is very similar that is doing just fine. The only difference I can perceive between them is in the one that's working, the value $d is already a string before it goes through the walk, whereas in the one that's not working, $d is an array that is converted to a string inside the walk (successfully, but ultimately unsuccessfully).
Something I'm missing?
And here's the fixed version:
array_walk($complete, function(&$d,$k) use($form) {
$d = values($k, 'name').' ['.date('m/d/y',strtotime($d['date'])).'] ('.$form.')';
});
That's what I was trying to do anyway. I wasn't trying to change the key. I was under the mistaken impression that to change the value you had to set the key to the new value.
You cannot change the key of the array inside the callback of array_walk():
Only the values of the array may potentially be changed; its structure cannot be altered, i.e., the programmer cannot add, unset or reorder elements. If the callback does not respect this requirement, the behavior of this function is undefined, and unpredictable.
This is also mentioned in the first comment:
It's worth nothing that array_walk can not be used to change keys in the array.
The function may be defined as (&$value, $key) but not (&$value, &$key).
Even though PHP does not complain/warn, it does not modify the key.
I'm working on an issue where users (truck drivers in this case) use SMS to send in information about work status. I want to keep the keying simple as not all users have smart phones so I have adopted some simple short codes for their input. Here are some examples and their meanings:
P#123456-3 (This is for picking up load 123456-3)
D#456789-1 (For the dropping of load 456789-1)
L#345678-9 (Load 345678-9 is going to be late)
This is pretty simple but users (and truck drivers) being what they are will key the updates in somewhat deviant manners such as:
#D 456789-1
D# 456789 - 1
D#.456789-1 This load looks wet to me do weneed to cancelthis order
You can pretty much come up with a dozen other permutations and it's not hard for me to catch and fix those that I can imagine.
I mostly use regular expressions to test the input against all my imagined "bad" patterns and then extract what I assume are the good parts, reassembling them into the correct order.
It's the new errors that cause me problems so I got to wondering if there was a more generic method where I can pass a "pattern" and a "message" to a function that would do it's best to turn the "message" into something matching the "pattern".
My searches have not found anything that really fits what I'm trying to do and I'm not even sure if there is a good general way to do this. I happen to be using PHP for this implementation but any type of example should help. Do any of you have a method?
If the user has problems with your software, fix the software, not the user!
The problem arises because your format looks unnecessary complicated. Why do you need the hash in the first place? How about simplifying it down to the following:
operation-code maybe-space load-number maybe-space and comment
Operation codes are assigned to different phone keys, so that J, K and L mean the same thing. Load-numbers can be sent as digits and as letters as well, e.g. agja means 2452. It's hard for the user to make a mistake using this format.
Here's some code to illustrate this approach:
function parse($msg) {
$codes = array(
3 => 'DROP',
5 => 'LOAD',
// etc
);
preg_match('~(\S)\s*(\S+)(\s+.+)?~', $msg, $m);
if(!$m)
return null; // cannot parse
$a = '.,"?!abcdefghijklmnopqrstuvwxyz';
$d = '1111122233344455566677777888999';
return array(
'opcode' => $codes[strtr($m[1], $a, $d)],
'load' => intval(strtr($m[2], $a, $d)),
'comment' => isset($m[3]) ? trim($m[3]) : ''
);
}
print_r(parse(' j ww03 This load looks wet to me'));
//[opcode] => LOAD
//[load] => 9903
//[comment] => This load looks wet to me
print_r(parse('dxx0123'));
//[opcode] => DROP
//[load] => 990123
//[comment] =>
Try something like this:
function parse($input) {
// Clean up your input: 'D#.456789 - 1 foo bar' to 'D 456789 1 foo far'
$clean = trim(preg_replace('/\W+/', ' ', $input));
// Take first 3 words.
list($status, $loadId1, $loadId2) = explode(' ', $clean);
// Glue back your load ID to '456789-1'
$loadId = $loadId1 . '-' . $loadId2;
return compact('status', 'loadId');
}
Example:
$inputs = array(
'P#123456-3',
'#D 456789-1',
'D# 456789 - 1',
'D#.456789-1 This load looks wet to me do weneed to cancelthis order',
);
echo '<pre>';
foreach ($inputs as $s) {
print_r(parse($s));
}
Output:
Array
(
[status] => P
[loadId] => 123456-3
)
Array
(
[status] => D
[loadId] => 456789-1
)
Array
(
[status] => D
[loadId] => 456789-1
)
Array
(
[status] => D
[loadId] => 456789-1
)
First, remove stuff that shouldn't be there:
$str = preg_replace('/[^PDL\d-]/i', '', $str);
That gives you the following normalised results:
D456789-1
D456789-1
D456789-1ldlddld
Then, attempt to match the data you want:
if (preg_match('/^([PDL])(\d+-\d)/i', $str, $match)) {
$code = $match[1];
$load = $match[2];
} else {
// uh oh, something wrong with the format!
}
Something like
/^[#\s]*([PDL])[#\s]*(\d+[\s-]+\d)/
or to be even more relaxed,
/^[^\d]*([PDL])[^\d]*(\d+)[^\d]+(\d)/
would get you what you want. But I'd prefer HamZa's comment as a solution: throw it back and tell them to get their act together :)
There are numerous questions here asking how to sort a multi-dimensional array in PHP. The answer is usort(). I know that. But I have a question that takes it a bit further, and I couldn't see a similar answer here.
I have an array of records, each of which includes a country ID (or a country name if you prefer; it's not relevant).
My task is to sort the array in such a way as to favour certain countries. This is dynamic -- ie the choice of countries to favour is determined by the user's config. I have a separate array which specifies the required sort order for the first few countries; results from other countries would just be left unsorted at the end of the list.
So the question is: how do I get the this sort criteria into usort() without resorting to using a global variable. And preferably without injecting the criteria array into every element of the main array ('coz if I'm going to loop it anyway, what's the point in using usort() at all?)
Please note: Since it's going to be relevant to the answers here, I'm stuck on PHP 5.2 for the time being, so I can't use an anonymous function. We are in the process of upgrading, but for now I need answers that will work for 5.2. (answers for 5.3/5.4 will be welcome too, especially if they make it significantly easier, but I won't be able to use them)
You explicitly write that you do not want to have global variables, so I do not make you a suggestion with static variables as well because those are actually global variables - and those are not needed at all.
In PHP 5.2 (and earlier) if you need call context within the callback, you can create your context by making use of a class of it's own that carries it:
class CallContext
{
}
For example you have the compare function for sort:
class CallContext
{
...
public function compare($a, $b)
{
return $this->weight($a) - $this->weight($b);
}
public function getCallback()
{
return array($this, 'compare');
}
...
}
That function can be used as the following as a callback with usort then:
$context = new CallContext();
usort($array, $context->getCallback());
Pretty straight forward. The private implementation of CallContext::weight is still missing, and from your question we know it needs some sort data and information. For example the name of the key of the country id in each record. Lets assume records are Stdclass objects so to get the weight of one record the context class needs to know the name of the property, the sort-order you define your own and a sort-value for those country-ids that are not defined in the custom sort order (the others, the rest).
These configuration values are given with the constructor function (ctor in short) and are stored as private members. The missing weight function then converts a record into the sort-value based on that information:
class CallContext
{
private $property, $sortOrder, $sortOther;
public function __construct($property, $sortOrder, $sortOther = 9999)
{
$this->property = $property;
$this->sortOrder = $sortOrder;
$this->sortOther = $sortOther;
}
private function weight($object) {
if (!is_object($object)) {
throw new InvalidArgumentException(sprintf('Not an object: %s.', print_r($object, 1)));
}
if (!isset($object->{$this->property})) {
throw new InvalidArgumentException(sprintf('Property "%s" not found in object: %s.', $this->property, print_r($object, 1)));
}
$value = $object->{$this->property};
return isset($this->sortOrder[$value])
? $this->sortOrder[$value]
: $this->sortOther;
}
...
The usage now extends to the following:
$property = 'country';
$order = array(
# country ID => sort key (lower is first)
46 => 1,
45 => 2
);
$context = new CallContext('country', $order);
usort($array, $context->getCallback());
With the same principle you can very often convert any PHP 5.3 closure with use clauses to PHP 5.2. The variables from the use clause become private members injected with construction.
This variant does not only prevent the usage of static, it also makes visible that you have got some mapping per each element and as both elements are treated equal, it makes use of a private implementation of some weight function which works very well with usort.
I hope this is helpful.
You might not want a global variable, but you need something that behaves like one. You could use a class with static methods and parameters. It won't pollute the global scope that much and it would still function the way you need it.
class CountryCompare {
public static $country_priorities;
public static function compare( $a, $b ) {
// Some custom sorting criteria
// Work with self::country_priorities
}
public static function sort( $countries ) {
return usort( $countries, array( 'CountryCompare', 'compare' ) );
}
}
Then just call it like this:
CountryCompare::country_priorities = loadFromConfig();
CountryCompare::sort( $countries );
You can use closures (PHP >= 5.3):
$weights = array( ... );
usort($records, function($a, $b) use ($weights) {
// use $weights in here as usual and perform your sort logic
});
See Demo : http://codepad.org/vDI2k4n6
$arrayMonths = array(
'jan' => array(1, 8, 5,4),
'feb' => array(10,12,15,11),
'mar' => array(12, 7, 4, 3),
'apr' => array(10,16,7,17),
);
$position = array("Foo1","Foo2","Foo3","FooN");
$set = array();
foreach($arrayMonths as $key => $value)
{
$max = max($value);
$pos = array_search($max, $value);
$set[$key][$position[$pos]] = $max ;
}
function cmp($a, $b)
{
foreach($a as $key => $value )
{
foreach ($b as $bKey => $bValue)
{
return $bValue - $value ;
}
}
}
uasort($set,"cmp");
var_dump($set);
output
array
'apr' =>
array
'FooN' => int 17
'feb' =>
array
'Foo3' => int 15
'mar' =>
array
'Foo1' => int 12
'jan' =>
array
'Foo2' => int 8
another example:-
Sorting a Multi-Dimensional Array with PHP
http://www.firsttube.com/read/sorting-a-multi-dimensional-array-with-php/
Every so often I find myself with a multidimensional array that I want to sort by a value in a sub-array. I have an array that might look like this:
//an array of some songs I like
$songs = array(
'1' => array('artist'=>'The Smashing Pumpkins', 'songname'=>'Soma'),
'2' => array('artist'=>'The Decemberists', 'songname'=>'The Island'),
'3' => array('artist'=>'Fleetwood Mac', 'songname' =>'Second-hand News')
);
The problem is thus: I’d like to echo out the songs I like in the format “Songname (Artist),” and I’d like to do it alphabetically by artist. PHP provides many functions for sorting arrays, but none will work here. ksort() will allow me to sort by key, but the keys in the $songs array are irrelevant. asort() allows me to sort and preserves keys, but it will sort $songs by the value of each element, which is also useless, since the value of each is “array()”. usort() is another possible candidate and can do multi-dimensional sorting, but it involves building a callback function and is often pretty long-winded. Even the examples in the PHP docs references specific keys.
So I developed a quick function to sort by the value of a key in a sub-array. Please note this version does a case-insensitive sort. See subval_sort() below.
function subval_sort($a,$subkey) {
foreach($a as $k=>$v) {
$b[$k] = strtolower($v[$subkey]);
}
asort($b);
foreach($b as $key=>$val) {
$c[] = $a[$key];
}
return $c;
}
To use it on the above, I would simply type:
$songs = subval_sort($songs,'artist');
print_r($songs);
This is what you should expect see:
Array
(
[0] => Array
(
[artist] => Fleetwood Mac
[song] => Second-hand News
)
[1] => Array
(
[artist] => The Decemberists
[song] => The Island
)
[2] => Array
(
[artist] => The Smashing Pumpkins
[song] => Cherub Rock
)
)
The songs, sorted by artist.
The answer to your question is indeed in the usort() function. However, what you need to do is write the function that you pass to it is doing the weighting for you properly.
Most of the time, you have something like
if($a>$b)
{
return $a;
}
But what you need to do is something along the lines of
if($a>$b || $someCountryID != 36)
{
return $a;
}
else
{
return $b;
}
You need to use ksort to sort by weight, not usort. That will be much cleaner.
Arrange your data in an associative array $weighted_data in the format weight => country_data_struct. This is a very intuitive form of presentation for weighted data. Then run
krsort($weighted_data)
So this is a VERY long explanation.
I have a Counter-Strike: Source server, with an in-game plugin for a store. This store saves its data in a MySQL Database (for this instance, named 'store'). The store keeps track of player's money in that database (on column 'credits' in table 'users'). It stores the clients based on a 'steam_id' (unique to every client)
The format of a 'steam_id' is (example): STEAM_0:0:123456789 OR STEAM_0:1:12345789.
My page that I have displays the top 1000 users from the database (sorted by credits).
My Problem: I need to convert these ugly steam_id's to actual names.
Where I am right now:
Steam API Documentation
According to the API documentation, I have to use 'community ids' when I query the API. If I want to get more than one user, I can use commas to separate community ids in the GET string.
(http://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key=APIKEY&steamids=76561197960435530,76561197960435531&format=json)
I have a function that converts the steam_id's to API-acceptable ID's.
function SteamID2CommunityID($steam_id){
$parts = explode(':', str_replace('STEAM_', '' ,$id));
$communityID = bcadd(bcadd('76561197960265728', $parts['1']), bcmul($parts['2'], '2'));
return $communityID;
}
With that, I can make my list of comma separated community ids with this:
while ($row = $mysqli->fetch_assoc($request)) {
$ids .= ',' . SteamID2CommunityID($row['steamid']) . ',';
}
Now for the tricky part, all these values come back in one JSON array. I need to add something, so when I display my data, I can convert a 'steam_id' straight to a 'name' (with the existing array).
Example of an output (most keys & values are removed to make it readable)
Array (
[response] => Array
(
[players] => Array
(
[0] => Array
(
[steamid] => 76561198010207577
[personaname] => [rGA] Stainbow
)
[1] => Array
(
[steamid] => 76561197966653036
[personaname] => |K}{R|Mastarious(MNBH)
)
)
)
)
So again, how would I go about going straight from a 'steam_id' to a name?
Thank you to anybody who can provide code and/or suggestions!
This is a variant duplicate of another Stack Overflow question, which is more practical and less localized, but I might as well answer this.
Assuming that your input steam_id is $INPUT and your final output array is stored in $OUTPUT, this is the functional foreach approach that you could use to convert steam_id to personaname:
/**
* Convert steam_id to personaname
* #returns STRING The name associated with the given steam_id
* BOOL FALSE if no match was found
*/
function steamID_to_name($INPUT, $OUTPUT)
{
// This gets the relevant part of the API response.
$array = $OUTPUT['response']['players'];
// Using your function to convert `steam_id` to a community ID
$community_id = SteamID2CommunityID($INPUT);
// Linear search
foreach ($array as $array_item)
{
// If a match was found...
if ($community_id == $array_item['steamid'])
// Return the name
return $array_item['personaname'];
}
// If no match was found, return FALSE.
return false;
}
I am using Cassandra and I have saved some byte representations as ID. Everything is working fine, however that data (id) is no good for output.
$users = $db->get('1');
echo '<pre>';
print_r($users);
die();
Outputs
Array
(
[��� X��W��c_ ] => Array
(
[id] => ��� X��W��c_
[name] => steve
[surname] => moss
)
[�*B�X��y�~p��~] => Array
(
[id] => �*B�X��y�~p��~
[name] => john
[surname] => doe
)
)
As you can see ID's are some wierd characters, it's because they are byte representations in database. They actually look like \xf5*B\xa0X\x00\x11\xe1\x99y\xbf~p\xbc\xd1~.
In PHPCASSA there is function CassandraUtil::import(); to which I can pass these bytes and it will return guid. It works fine, but I want my array to automatically converted from bytes to guids.
Only option I find is looping through every item in array and assigning new value to it. Somehow I think that it is not the best approach. Is there any other ways to do this?
TL;DR
Have array with bytes like above, need to use CassandraUtil::import(); on array keys and id's to get readable id's. What is the most effective way of doing so.
UPDATE
Sorry, only saw the top level array key, I think you would have to run the function below as well as another one after:
function cassImportWalkRecur(&$item, $key)
{
if ($key == 'id')
$item = CassandraUtil::import();
}
$array = array_walk_recursive($array, 'cassImportWalkRecur');
That should apply it to the ID fields. If you need to check the data first, there maybe a way to detect the encoding, but I am not sure how to do that.
You should be able to create a function and use array_walk to traverse the array and update the keys. Something like:
function cassImportWalk($item, &$key)
{
$key = CassandraUtil::import();
}
$array = array_walk($array, 'cassImportWalk');
Untested (also you may have to change the CassandraUtil usage), but should work.
Unless I am misunderstanding the question this can be done simply and cleanly like so:
$users = $db->get('1');
$keys = array_keys($users);
$readableKeys = array_map("CassandraUtil::import",$keys);
foreach($users as $currentKey => $subArray) {
$readableKey = array_shift($readableKeys);
$subArray['id'] = $readableKey;
$users[$readableKey] = $subArray;
unset($users[$currentKey]);
}
Would array_flip() all keys and values, then array_walk() and apply my function, before doing a final array_flip().