Related
I have this array built from a function that sorts allowed or valid url slugs and their ids into another array. I can call the current category id by passing the url slug to the category. Now I need to get the children category ids (if any) so i can call the appropriate items from the database for display purpose.
Heres an example of the array:
Array (
[radios] => 1
[radios/motorola] => 2
[radios/motorola/handheld] => 3
[radios/motorola/mobile] => 4
[radios/icom] => 5
[radios/icom/handheld] => 6
[radios/icom/mobile] => 7
[radios/mics-and-speakers] => 8
[radios/mounts] => 9
[radios/radio-other] => 10
[misc] => 11
[misc/led] => 12
[phones] => 13
[phones/samsung] => 14
[phones/lg] => 15
[phones/motorola] => 16
[phones/huawei] => 17
[phones/blackberry] => 18
[phones/flip] => 19
[boosters] => 20
[boosters/standalone] => 21
[boosters/indoor-antenna] => 22
[boosters/outdoor-antenna] => 23
[boosters/connections] => 24
[accessories] => 25
[accessories/cases] => 26
[accessories/other] => 27
[internet] => 28
[internet/fusion] => 29
[internet/point-to-point] => 30
[internet/hotspots] => 31
[internet/gateways] => 32
[internet/switches] => 33
[cameras] => 34
[cameras/complete-kits] => 35
[cameras/additional-cameras] => 36
[cameras/other] => 37
);
As you can see, each result points to the category ID of that group. If i visit the following url:
http://example.com/store/cameras
I can print out that THE PATH CURRENTLY IS: 34 which is correct. Since It has children under it, I also need their ID's and the ID's of any of their children, etc etc. That way on radios, i can show ALL of the sub category items, and on radios/motorola i am only showing the Motorola based items and its children, and such down the line.
If there an easy way, using this array I have now, to sort the children (if any) all the way down and get back just their id's (preferably in a new array) for showing database items?
You might want to create a function like this to filter your array,
function filterArray($array, $term) {
$pattern = "/\b" . str_replace($term, '/', '\/') . "\b/i";
foreach($array as $key => $value) {
if(preg_match($pattern, $key)) {
/* Following condition makes sure that your search
will match starting from the beginning. */
if (stripos(trim($key), $term) === 0){
$filtred[] = $value;
}
}
}
}
Then call the above function with the $array and your search $term.
filterArray($array, 'radios') will give you this,
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 [8] => 9 [9] => 10 )
filterArray($array, 'radios/motorola') will give you this,
Array ( [0] => 2 [1] => 3 [2] => 4 )
And so on.. I hope this helps.
You can maybe try double layer array, so that you can store values like this,
Array (
[name] => John
[surname] => Smith
[contact] => Array (
[address] => 18 Maple Street
[number] => 555 477 77 77
)
)
This way if you need to print something from "contact" you can use a loop and print all childs of contact field.
This question already has answers here:
How can I sort arrays and data in PHP?
(14 answers)
Closed 5 years ago.
I need to sort the multidimensional array with output by value. I can not group the nested arrays by date and output it with the title (date).
There is an array:
Array (
[0] => (
[ID] => 959
[title] => title
[post_date] => 2018-01-01 10:17:49
)
[1] => (
[ID] => 960
[title] => title
[post_date] => 2018-01-01 10:17:49
)
[2] => (
[ID] => 961
[title] => title
[post_date] => 2018-01-02 10:17:49
)
[3] => (
[ID] => 962
[title] => title
[post_date] => 2014-01-02 10:17:49
)
[4] => (
[ID] => 963
[title] => title
[post_date] => 2014-01-03 10:17:49
)
)
As a result, I need to get this.
There is a date as the header and all arrays in which this date.
Result
- 2018-01-01 -
id: 959 Title
id: 560 Title
- 2018-01-02 -
id: 961 Title
id: 562 Title
- 2018-01-02 -
id: 963 Title
.....
have you done with part about sorting? I assume you are. So the only thing left is "grouping".
But actually you don't need to group data. Just iterate sorted items one by one and remember date from previous element. Once dates for current element and for previous one differ - you output "header". Something like that:
$data = [[a=> 2, b=> 1], [a=> 2, b=> 4], [a=> 3, b=> 1], [a=> 4, b=> 0]];
$previous_a = null;
foreach($data as $item) {
if ($item['a'] != $previous_a) {
echo 'header --- '.$item['a'].'<br />';
}
$previous_a = $item['a'];
echo $item['b'].'<br />';
}
You could try something like this :
$aggreg = [] ;
foreach ($array as $item) {
$day = $item['post_date'];
// if you want to group by day, just use $day = substr($day,0,10) ;
$aggreg[$day][] = 'id: ' . $item['ID'] . " " . $item['title'] ;
}
krsort($aggreg) ; // or ksort() or just comment this line.
// then build the output :
$output = "" ;
foreach ($aggreg as $day => $data) {
$output .= "- " .substr($day,0,10) . " -\n\n" . implode("\n", $data) . "\n\n" ;
}
print $output ;
Will outputs :
- 2018-01-02 -
id: 961 title
- 2018-01-01 -
id: 959 title
id: 960 title
- 2014-01-03 -
id: 963 title
- 2014-01-02 -
id: 962 title
NB If you have to output this in HTML, please change \n to <br>
For example, I have 7 channels and 4 groups. This should be distributed in the following way:
Channel 1 - Group 1
Channel 2 - Group 2
Channel 3 - Group 3
Channel 4 - Group 4
Channel 5 - Group 1
Channel 6 - Group 2
Channel 7 - Group 3
How can I distribute in This way?
I used forloop as following
$groups = //array outputs the following
Array
(
[0] => Array
(
[id] => 10
[email] => susannec#methodfuel.com
)
[1] => Array
(
[id] => 17
[email] => air#tel.com
)
[2] => Array
(
[id] => 34
[email] => venu#methodfuel.com
)
[3] => Array
(
[id] => 62
[email] => varadaraj999#gmail.com
)
)
Now,
I am having a query
foreach ($query as $key => $value) {
$usrSql = "UPDATE issues SET user_id = ".$usersAssigned[$key]['id']." WHERE id =".$value['id'];
// DB updating process
}
For 4 iterations it is working fine, from 5th iteration I am getting an error:
Undefined offset: 4
How do I solve this problem? After four iteration The loop should start from first.
Update: You will have to use an external variable to keep track of the current index of the group element being accessed and reset it to zero when it has gotten to the end of the group.
Is this what you are looking for?
$channels = array("Channel 1", "Channel 2", "Channel 3", "Channel 4", "Channel 5", "Channel 6", "Channel 7");
$group_id = 0;
$groups = array( array("id"=>3, "email"=>"email_1"), array("id"=>10, "email"=>"email_2"), array("id"=>6, "email"=>"email_3"), array("id"=>71, "email"=>"email_4"));
foreach($channels as $channel)
{
echo $channel." - Group ".$groups[$group_id]["id"]."\n"; // print out the channel and the group id
$group_id ++;
if($group_id > 0 && $group_id % (count($groups)) == 0)
$group_id = 0;
}
I am a bit 'rusty with php as it happens that sometimes I use it for weeks and sometimes it happens that you do not use for months. Either way I'm trying to pass values of another array are "array", on another array in an orderly manner ... What I want to do is essentially create a key that allows me to organize incremental values per line, in particular;
array content
Array
(
[key] => value
[2] => 1
[3] => Inter
[4] => 4
[5] => 4
[6] => 0
[7] => 0
[8] => 5
[9] => 1
[10] => +4
[11] => 12
[12] => Chievo Verona - Inter 0 - 1
[13] => Inter - Milan 1 - 0
[14] => Carpi - Inter 1 - 2
[15] => Inter - Atalanta 1 - 0
[16] => ;
[17] => 2
[18] => Torino
[19] => 4
[20] => 3
[21] => 1
[22] => 0
[23] => 9
[24] => 4
[25] => +5
[26] => 10
[27] => Torino - Sampdoria 2 - 0
[28] => Hellas Verona - Torino 2 - 2
[29] => Torino - Fiorentina 3 - 1
[30] => Frosinone - Torino 1 - 2
[31] => ;
[32] => 3
[33] => Fiorentina
[34] => 4
[35] => 3
[36] => 0
[37] => 1
[38] => 5
[39] => 3
[40] => +2
[41] => 9
[42] => Carpi - Fiorentina 0 - 1
[43] => Fiorentina - Genoa 1 - 0
[44] => Torino - Fiorentina 3 - 1
[45] => Fiorentina - Milan 2 - 0
[46] => ;
[47] => 4
[48] => Roma
[49] => 4
[50] => 2
the ";" It'll need to be able to recognize where you break the line, I do not remember if there is any method that allows me to access the next key.
Currently my code is:
$classifica = array("key" => "value");
function buildArrayClassifica()
{
global $array;
global $classifica;
$i = 0;
foreach(array_slice($array,1) as $key => $value)
{
if($value != ";")
{
array_push($classifica[$i], $value); //there is a problem
echo $value . " ";
}
else if($value == "value ")
{
continue;
}
else
{
$i++;
echo "<br/>";
}
}
}
The code I will return this error:
Warning: array_push () Expects parameter 1 to be array, null given in...
in particular on array_push, it seems not to accept incremental keys or maybe I'm doing it the wrong way.
Can anyone tell me how to solve?
UPDATING
As you have seen the issue is not simple and it is quite difficult to explain the problem, but I will try to be even clearer to meet.
As you can see above you are the structure of the array "array", but is a disordered structure that needs to be ordered in an additional array. To recapitulate the structure of the array "array" is:
1 , Inter , 4 , 4 , 0 , 0 , 5 , 1 , +4 , 12 , Chievo Verona - Inter 0 - 1 , Inter - Milan 1 - 0 , Carpi - Inter 1 - 2 , Inter - Atalanta 1 - 0 , ;
the ";" means that the line is finished. So the next value near the ";" means that a new line coming. What I need is move all the value of "array" in array classifica, but I want organize them for:
ROW1 => 1 , Inter , 4 , 4 , 0 , 0 , 5 , 1 , +4 , 12 , Chievo Verona - Inter 0 - 1 , Inter - Milan 1 - 0 , Carpi - Inter 1 - 2 , Inter - Atalanta 1 - 0
ROW2 => Other values...
So the ROW1, 2 .. rapresents the key of the array classifica. I'm trying to push the value inside a row and after it increment $i index but the code doesn't add the value because the index replace in loop the actual key, for example:
actual foreach content:
$i = 0
value = "Inter"
content of array=> [0] => Inter
now the $i is ever 0 because the row isn't finished yet, the ";"
it has not yet been reached, so the next content of foreach is:
"1" but replace the "Inter" value, so this is a problem.
You cannot use array_push() in this way. Please try:
$classifica = array();
function buildArrayClassifica()
{
global $array;
global $classifica;
$i = 0;
foreach(array_slice($array,1) as $key => $value)
{
if($value != ";")
{
$classifica[$i] = $value;
echo $value . " ";
}
else if($value == "value ")
{
continue;
}
else
{
$i++;
echo "<br/>";
}
}
}
This will create indexes (the value of $i) when $value is added to your array. array_push() would place the $value at the next numerical index and may not be what you want by the looks of it. You could also use $key if you wanted the index to match.
EDIT
After more discussion, you have a specific format, where the first Item is the Key, the following indexes are values, and when you encounter the value ";", it starts the sequence over. So when we read:
[2] => 1
[3] => Inter
[4] => 4
[5] => 4
[6] => 0
[7] => 0
[8] => 5
[9] => 1
[10] => +4
[11] => 12
[12] => Chievo Verona - Inter 0 - 1
[13] => Inter - Milan 1 - 0
[14] => Carpi - Inter 1 - 2
[15] => Inter - Atalanta 1 - 0
[16] => ;
The first value, '1' is our Index, the following values become the Value for this Index, and we stop reading when we find ";". That would look something like:
<?php
function buildArrayClassifica($dataArray){
$resultArray = array();
$t = array_values($dataArray);
print_r($t);
$lsc = 0;
foreach($t as $k => $v){
if((string)$v == ';'){
echo "<p>Found ';' at [$k] => {$v}</p>";
// Found end of data
// Save position
$scp = $k;
echo "<p>Recorded [$scp] position for ';'.</p>";
// Reset to find the Index, first int in this series
$c=$lsc; // First pass this should be 0
// Set the index
if($lsc ==0){
// First pass
$index = intval($t[$c]);
echo "<p>Getting Index from position [" . ($c) ."] => $index for Result Array.</p>";
$c++;
} else {
$c++;
$index = intval($t[$c]);
echo "<p>Getting Index from position [" . ($c) ."] => $index for Result Array.</p>";
$c++;
}
echo "<p>Starting to read data from [$c] until [$scp].</p>";
// Init implode variable
$data = "";
for($c;$c<$scp;$c++){
//Populate variable with the series up to semicolon, skipping first element (index)
$data .= $t[$c] . ", ";
}
echo "<p>Data collected for this round: '" . htmlentities(substr($data,0,-2)) . "'</p>";
// populate result array
$resultArray[$index] = substr($data,0,-2);
echo "<p>resultArray[$index] => " . htmlentities($resultArray[$index]) . "</p><br />";
$lsc = $scp;
}
}
return $resultArray;
}
$oldArray = array(1, "Inter", 4 , 4 , 0 , 0 , 5 , 1 , "+4" , 12 , "Chievo Verona - Inter 0 - 1", "Inter - Milan 1 - 0", "Carpi - Inter 1 - 2", "Inter - Atalanta 1 - 0", ";", 2, "Torino", 4, 3, 1, 0, 9, 4, '+5', 10, "Torino - Sampdoria 2 - 0", "Hellas Verona - Torino 2 - 2", "Torino - Fiorentina 3 - 1", "Frosinone - Torino 1 - 2", ";", 3, "apple", 0, 4, 6, "apple", ";");
$classifica = buildArrayClassifica($oldArray);
print_r($classifica);
?>
My initial testing seems to work for what you described. The first element of the array becomes the Index, the next few values become imploded until we reach the semicolon (;) value.
What I see as a result:
Array ( [1] => Inter, 4, 4, 0, 0, 5, 1, +4, 12, Chievo Verona - Inter 0 - 1, Inter - Milan 1 - 0, Carpi - Inter 1 - 2, Inter - Atalanta 1 - 0 [2] => Torino, 4, 3, 1, 0, 9, 4, +5, 10, Torino - Sampdoria 2 - 0, Hellas Verona - Torino 2 - 2, Torino - Fiorentina 3 - 1, Frosinone - Torino 1 - 2 [3] => apple, 0, 4, 6, apple )
ASIDE
If it were me, I would push it all into an array like so:
$data = array();
for($c;$c<$scp;$c++){
$data[] = $t[$c];
}
$resultArray[$index] = $data;
Or if you really want a string:
$resultArray[$index] = implode(", ", $data);
Hope that helps.
I am trying to calculate the winning order of golfers when they are tied in a competition.
These golf competitions are using the "stableford" points scoring system, where you score points per hole with the highest points winning. Compared to normal golf "stroke play" where the lowest score wins (though this also has the countback system, only calculating the lowest score in the event of a tie...)
The rules are to use a "countback". i.e., if scores are tied after 9 holes, the best placed of the ties is the best score from the last 8 holes. then 7 holes, etc.
The best I can come up with is 2 arrays.
An array with all the players who tied in a given round. ($ties)
One which has the full score data in (referencing the database playerid) for all 9 holes. ($tie_perhole)
I loop through array 1, pulling data from array 2 and using the following formula to create a temporary array with the highest score:
$max = array_keys($array,max($array));
If $max only has 1 item, this player is the highest scorer. the loop through the first array is "by reference", so on the next iteration of the loop, his playerid is now longer in the array, thus ignored. this continues until there is only 1 playerid left in the first array.
However, it only works if a single player wins in each iteration. The scenario that doesn't work is if a sub-set of players tie on any iterations / countbacks.
I think my problem is the current structure I have will need the original $ties array to become split, and then to continue to iterate through the split arrays in the same way...
As an example...
The $ties array is as follows:
Array
(
[18] => Array
(
[0] => 77
[1] => 79
[2] => 76
[3] => 78
)
)
The $tie_perhole (score data) array is as follows:
Array
(
[18] => Array
(
[77] => Array
(
[9] => 18
[8] => 16
[7] => 14
[6] => 12
[5] => 10
[4] => 8
[3] => 6
[2] => 4
[1] => 2
)
[79] => Array
(
[9] => 18
[8] => 17
[7] => 15
[6] => 14
[5] => 11
[4] => 9
[3] => 7
[2] => 5
[1] => 3
)
[76] => Array
(
[9] => 18
[8] => 16
[7] => 14
[6] => 12
[5] => 10
[4] => 8
[3] => 6
[2] => 4
[1] => 2
)
[78] => Array
(
[9] => 18
[8] => 17
[7] => 15
[6] => 13
[5] => 11
[4] => 9
[3] => 7
[2] => 5
[1] => 3
)
)
)
So in this competition, player's 78 and 79 score highest on the 8th hole countback (17pts), so 1st and 2nd should be between them. Player 79 should then be 1st on the 6th hole countback (14pts, compared to 13pts). The same should occur for 3rd and 4th place with the 2 remaining other players.
There are other scenarios that can occur here, in that within a competition, there will likely be many groups of players (of different amounts) on different tied points through the leaderboard.
Also note, there will be some players on the leaderboard who are NOT tied and stay in their current outright position.
The basics of the working code I have is:
foreach ($ties as $comparekey => &$compareval) {
$tie_loop = 0;
for ($m = 9; $m >= 1; $m--) {
$compare = array();
foreach ($compareval as $tie) {
$compare[$tie] = $tie_perhole[$comparekey][$tie][$m];
}
$row = array_keys($compare,max($compare));
if (count($row) == 1) {
$indexties = array_search($row[0], $ties[$comparekey]);
unset($ties[$comparekey][$indexties]);
// Now update this "winners" finishing position in a sorted array
// This is a multidimensional array too, with custom function...
$indexresults = searchForId($row[0], $comp_results_arr);
$comp_results_arr[$indexresults][position] = $tie_loop;
$tie_loop++;
}
// I think I need conditions here to filter if a subset of players tie
// Other than count($row) == 1
// And possibly splitting out into multiple $ties arrays for each thread...
if (empty($ties[$comparekey])) {
break;
}
}
}
usort($comp_results_arr, 'compare_posn_asc');
foreach($comp_results_arr as $row) {
//echo an HTML table...
}
Thanks in advance for any helpful insights, tips, thoughts, etc...
Robert Cathay asked for more scenarios. So here is another...
The leaderboard actually has more entrants (player 26 had a bad round...), but the code i need help with is only bothered about the ties within the leaderboard.
Summary leaderboard:
Points Player
21 48
21 75
20 73
20 1
13 26
This example produces a $tie_perhole array of:
Array
(
[21] => Array
(
[75] => Array
(
[9] => 21
[8] => 19
[7] => 16
[6] => 14
[5] => 12
[4] => 9
[3] => 7
[2] => 5
[1] => 3
)
[48] => Array
(
[9] => 21
[8] => 19
[7] => 16
[6] => 13
[5] => 11
[4] => 9
[3] => 8
[2] => 5
[1] => 3
)
)
[20] => Array
(
[73] => Array
(
[9] => 20
[8] => 18
[7] => 16
[6] => 13
[5] => 11
[4] => 8
[3] => 6
[2] => 5
[1] => 3
)
[1] => Array
(
[9] => 20
[8] => 17
[7] => 16
[6] => 14
[5] => 12
[4] => 9
[3] => 7
[2] => 4
[1] => 2
)
)
)
In this example, the array shows that players 75 and 48 scored 21 points that player 75 will eventually win on the 6th hole countback (14pts compared to 13pts) and player 48 is 2nd. In the next tied group, players 73 and 1 scored 20 points, and player 73 will win this group on the 8th hole countback and finishes 3rd (18 pts compared to 17 pts), with player 1 in 4th. player 26 is then 5th.
Note, the $tie_loop is added to another array to calculate the 1st to 5th place finishing positions, so that is working.
Hopefully that is enough to help.
Ok, so I don't understand golf at all... hahaha BUT! I think I got the gist of this problem, so heres my solution.
<?php
/**
* Author : Carlos Alaniz
* Email : Carlos.glvn1993#gmail.com
* Porpuse : Stackoverflow example
* Date : Aug/04/2015
**/
$golfers = [
"A" => [1,5,9,1,1,2,3,4,9],
"B" => [2,6,4,2,4,4,1,9,3],
"C" => [3,4,9,8,1,1,5,1,3],
"D" => [1,5,1,1,1,5,4,5,8]
];
//Iterate over scores.
function get_winners(&$golfers, $hole = 9){
$positions = array(); // The score numer is the key!
foreach ($golfers as $golfer=>$score ) { // Get key and value
$score_sub = array_slice($score,0,$hole); // Get the scores subset, first iteration is always all holes
$total_score = (string)array_sum($score_sub); // Get the key
if(!isset($positions[$total_score])){
$positions[$total_score] = array(); // Make array
}
$positions[$total_score][] = $golfer; // Add Golpher to score.
}
ksort($positions, SORT_NUMERIC); // Sort based on key, low -> high
return array(end($positions), key($positions)); // The last shall be first
}
//Recursion is Awsome
function getWinner(&$golfers, $hole = 9){
if ($hole == 0) return;
$winner = get_winners($golfers,$hole); // Get all ties, if any.
if(count($winner[0]) > 1){ // If theirs ties, filter again!
$sub_golfers =
array_intersect_key($golfers,
array_flip($winner[0])); // Only the Worthy Shall Pass.
$winner = getWinner($sub_golfers,$hole - 1); // And again...
}
return $winner; // We got a winner, unless they really tie...
}
echo "<pre>";
print_R(getWinner($golfers));
echo "</pre>";
Ok... Now ill explain my method...
Since we need to know the highest score and it might be ties, it makes no sense to me to maintain all that in separate arrays, instead I just reversed the
golfer => scores
to
Tota_score => golfers
That way when we can sort the array by key and obtain all the golfers with the highest score.
Now total_score is the total sum of a subset of the holes scores array. So... the first time this function runs, it will add all 9 holes, in this case theres 3 golfers that end up with the same score.
Array
(
[0] => Array
(
[0] => A
[1] => B
[2] => C
)
[1] => 35
)
Since the total count of golfers is not 1 and we are still in the 9th hole, we run this again, but this time only against those 3 golfers and the current hole - 1, so we are only adding up to the 8th hole this time.
Array
(
[0] => Array
(
[0] => B
[1] => C
)
[1] => 32
)
We had another tie.... this process will continue until we reach the final hole, or a winner.
Array
(
[0] => Array
(
[0] => C
)
[1] => 31
)
EDIT
<?php
/**
* Author : Carlos Alaniz
* Email : Carlos.glvn1993#gmail.com
* Porpuse : Stackoverflow example
**/
$golfers = [
"77" => [2,4,6,8,10,12,14,16,18],
"79" => [3,5,7,9,11,14,15,17,18],
"76" => [2,4,6,8,10,12,14,16,18],
"78" => [3,5,7,9,11,13,15,17,18]
];
//Iterate over scores.
function get_winners(&$golfers, $hole = 9){
$positions = array(); // The score numer is the key!
foreach ($golfers as $golfer => $score) { // Get key and value
//$score_sub = array_slice($score,0,$hole); // Get the scores subset, first iteration is always all holes
$total_score = (string)$score[$hole-1]; // Get the key
if(!isset($positions[$total_score])){
$positions[$total_score] = array(); // Make array
}
$positions[$total_score][] = $golfer; // Add Golpher to score.
}
ksort($positions, SORT_NUMERIC); // Sort based on key, low -> high
return [
"winner"=> end($positions),
"score" => key($positions),
"tiebreaker_hole" => [
"hole"=>$hole,
"score"=> key($positions)],
]; // The last shall be first
}
//Recursion is Awsome
function getWinner(&$golfers, $hole = 9){
if ($hole == 0) return;
$highest = get_winners($golfers,$hole); // Get all ties, if any.
$winner = $highest;
if(count($winner["winner"]) > 1){ // If theirs ties, filter again!
$sub_golfers =
array_intersect_key($golfers,
array_flip($winner["winner"])); // Only the Worthy Shall Pass.
$winner = getWinner($sub_golfers,$hole - 1); // And again...
}
$winner["score"] = $highest["score"];
return $winner; // We got a winner, unless they really tie...
}
echo "<pre>";
print_R(getWinner($golfers));
echo "</pre>";
Result:
Array
(
[winner] => Array
(
[0] => 79
)
[score] => 18
[tiebreaker_hole] => Array
(
[hole] => 6
[score] => 14
)
)