I have an array like that:
printr_($photos);
======
Array
(
[0] => Array
(
[path] => site:photos/photo-1.jpg
[data] => Array
(
[PhotoTitle] => Mega title
[PhotoDate] => 2015
[FlickrURL] => xxx
[Portrait] =>
[slug] => mega-title
)
)
[1] => Array
(
[path] => site:photos/photo-2.jpg
[data] => Array
(
[PhotoTitle] => Photo title
[PhotoDate] => 2001
[FlickrURL] => xxx
[Portrait] =>
[slug] => photo-title
)
)
...
I would like to get the array index from a string (which is the slug from my browser current URL).
Tried that solution but I got an error (Undefined index: data […] on line 95)
/*
** Search in array
*/
function arraySearch($array, $field, $search){
foreach($array as $key => $value){
if ($value[$field] === $search)
return $key;
}
return false;
}
// Line 95
$photo_index = $photos[arraySearch($photos["data"], "slug", "mega-title")];
This should work PHP >= 5.5:
$key = array_search('mega-title', array_column(array_column($photos, 'data'), $slug));
$photo_index = $photos[$key];
The $photos variable does not have a key 'data', at least not by the print output. It has keys 1, 2, 3 etc.So $photos["data"] simply does not exist.
As to the search, I'm not 100% sure what you want to do, but I assume you want to get the index of the photo which $field in data equals $search, so that would be
/*
** Search in array
*/
function arraySearch($array, $field, $search){
foreach($array as $key => $value){
if ($value["data"][$field] === $search)
return $key;
}
return false;
}
and you would use it
$photo_index = $photos[arraySearch($photos, "slug", "mega-title")];
Related
I have this array stored in $data variable:
Array
(
[0] => Array
(
[delivery_plan] => 2021/07
[code] => CR020
[amount] => 250
)
[1] => Array
(
[delivery_plan] => 2021/08
[code] => CR020
[amount] => 350
)
[2] => Array
(
[delivery_plan] => 2021/09
[code] => CR020
[amount] => 100
)
I'd like to find the numeric index by using the values of "delivery_plan" and "code".
For example the delivery plan = 2021/09 AND code = CR020 then the expected result is 2.
The code i've been using so far :
function searchForId($delivery_plan, $code, $array) {
foreach ($array as $key => $arr) {
if ($arr['delivery_plan'] === $delivery_plan && $arr['code'] === $code) {
return $key;
}
}
return null;
}
$id = searchForId('2021/06','CR020', $data);
print_r($id);
I've tried using loops and the result was fine (2) , however i don't want to using any loops for this case
What is the faster/better solution other than using the loops ?
I am trying to put content of one array into the same array. Here I have an array $mclass with values such as
Array
(
[0] => stdClass Object
(
[room_id] => 1,3,5
[day] => 1
[class_teacher] => TEA-2014-2
[final_exam_date] => 2015-09-21
)
)
You can see I have room_id index with 1,3,5 value. Now, I want to explode the room_id and get duplicate of same array index data with change of room_id and push into the array. and finally delete the current array index such as [0]. Here I want the final result as.
Array
(
[0] => stdClass Object
(
[room_id] => 1
[day] => 1
[class_teacher] => TEA-2014-2
[final_exam_date] => 2015-09-21
)
[1] => stdClass Object
(
[room_id] => 3
[day] => 1
[class_teacher] => TEA-2014-2
[final_exam_date] => 2015-09-21
)
[2] => stdClass Object
(
[room_id] => 5
[day] => 1
[class_teacher] => TEA-2014-2
[final_exam_date] => 2015-09-21
)
)
Here is my code for the same:
if(count($mclass)>0)
{
foreach($mclass as $mclasskey=>$mclass_row)
{
/* Room ID Calculation */
if(isset($mclass[$mclasskey]))
{
$temp_room_id = explode(',',$mclass_row->room_id);
if(count($temp_room_id)>1)
{
foreach($temp_room_id as $trkey=>$tr)
{
if(!in_array($temp_room_id[$trkey], $morning_class_semester))
{
array_push($morning_class_semester,$temp_room_id[$trkey]);
}
}
if(count($morning_class_semester)>0)
{
foreach($morning_class_semester as $mcskey=>$mcs)
{
$index_count = count($new_test);
$test[$index_count] = $mclass[$mclasskey];
$test[$index_count]->room_id = $morning_class_semester[$mcskey];
array_push($new_test,$test[$index_count]);
}
unset($mclass[$mclasskey]);
}
}
}
}
}
The code below does what you're looking for using only arrays. So you'll have to change the array access operators to -> since you're accessing an object. I'd do so, but it would break the example, so I'll leave that up to you.
Code Explained:
Loop through array selecting each subarray (object in your case), explode on the $item('room_id') ... ($item->room_id in your case) ... and create sub arrays, via loop, from that using the data from the original using each key. Remove the original item (which has the combined room_ids) and combine the placeholder and original array.
<?php
//Establish some data to work with
$array = array(
array(
"room_id" => "1,3,5",
"day" => 1,
"class_teacher" => "TEA-2014-2",
"final_exam_date" => "2015-09-21",
));
foreach ($array as $key => $item) {
$placeholder = array();
$ids = explode(',',$item['room_id']);
if (count($ids) > 1) {
foreach ($ids as $id) {
$push = array(
'room_id' => $id,
'day' => $item['day'],
'class_teacher' => $item['class_teacher'],
'final_exam_date' => $item['final_exam_date']
);
array_push($placeholder, $push);
}
$array = array_merge($array, $placeholder);
unset($array[$key]);
}
}
var_dump($array);
?>
I am trying to write a shoping cart in php and I have a problem with get/set values in multidimentional arrays.
I keep the current order in $_SESSION['basket']. It looks like that:
[basket] => Array
(
[0] => Array
(
[pid] => 3
[name] => Camera
[price] => 200.99
[quantity] => 1
)
[1] => Array
(
[pid] => 5
[name] => Computer
[price] => 320.99
[quantity] => 1
[extras] => Array
(
[0] => Array
(
[pid] => 86
[name] => RAM
[price] => 99
[qty] => 1
)
[1] => Array
(
[pid] => 98
[name] => CD-ROM
[price] => 19.99
[qty] => 1
)
)
)
)
Every item is stored as a subarray. I have a function, which checks if a given item exists in the basket array and returns the path to it. For example, if I want to check for a product with id 98 (CD-Rom), the function returns the following path: 1:extras:1.
I cant figure out how to use the path if I want to get or a set a value in the array. Is it possible to construct the path to an array key, without the use of eval()? I have these functions:
function get_val($array, $path, $key) {
//some code
return eval('return '.$array.$path.$key.';');
}
So, $price = get_val($_SESSION['basket'], $path, 'price'); should return the price for CD-ROM (19.99)
function set_val($array, $path, $key, $value) {
//some code
$str = eval(''.$array.$path.$key.';');
$str = $value;
}
set_val($_SESSION['basket'], $path, 'price', '30'); will set the price for CD-ROM to 30.
Is there a better way for doing this?
Thank you.
Here you go a code I have finetuned some time ago:
function get_val($array,$path) {
for($i=$array; $key=array_shift($path); $i=$i[$key]) {
if(!isset($i[$key])) return null;
}
return $i;
}
function set_val(&$array,$path,$val) {
for($i=&$array; $key=array_shift($path); $i=&$i[$key]) {
if(!isset($i[$key])) $i[$key] = array();
}
$i = $val;
}
See this test example, I believe it is what you are looking for:
$data = array("x"=>array("y"=>array("z"=>"foo")));
echo get_val($data,array("x","y","z")); // foo
set_val($data,array("x","y","u"),"bar"); // $data["x"]["y"]["u"] = "bar";
Yesterday people down voted me because I got this function. And today I hope someone can use it.
Getting values
Below function will return the value of the path you define.
function getPath($path, $array)
{
$path = split(":", $path);
$active = $array;
foreach($path as $key => $part)
{
$active = $active[$part];
}
return $active;
}
$array = array(array(array(array("product" => array( "id" => 12 )))));
// Give the path to the data you want, by keys
echo getPath("0:0:0:product:id", $array);
Which echo's
12
And setting values
function setPath($path, &$array, $mykey, $value)
{
$path = split(":", $path);
$active =& $array;
foreach($path as $key => $part)
{
$active =& $active[$part];
}
$active[$mykey] = $value;
return $active;
}
$array = array(array(array(array("product" => array( "id" => 12 )))));
// Give the path to the data you want, by keys
setPath("0:0:0:product", $array, "price", 100);
print_r($array);
Results:
Array ( [0] => Array ( [0] => Array ( [0] => Array ( [product] => Array ( [id] => 12 [price] => 100 ) ) ) ) )
So My problem is:
I want to create nested array from string as reference.
My String is "res[0]['links'][0]"
So I want to create array $res['0']['links']['0']
I tried:
$result = "res[0]['links'][0]";
$$result = array("id"=>'1',"class"=>'3');
$result = "res[0]['links'][1]";
$$result = array("id"=>'3',"class"=>'9');
when print_r($res)
I see:
<b>Notice</b>: Undefined variable: res in <b>/home/fanbase/domains/fanbase.sportbase.pl/public_html/index.php</b> on line <b>45</b>
I need to see:
Array
(
[0] => Array
(
[links] => Array
(
[0] => Array
(
[id] => 1
[class] => 3
)
)
)
[1] => Array
(
[links] => Array
(
[0] => Array
(
[id] => 3
[class] => 9
)
)
)
)
Thanks for any help.
So you have a description of an array structure, and something to fill it with. That's doable with something like:
function array_create(&$target, $desc, $fill) {
preg_match_all("/[^\[\]']+/", $desc, $uu);
// unoptimized, always uses strings
foreach ($uu[0] as $sub) {
if (! isset($target[$sub])) {
$target[$sub] = array();
}
$target = & $target[$sub];
}
$target = $fill;
}
array_create( $res, "[0]['links'][0]", array("id"=>'1',"class"=>'3') );
array_create( $res, "[0]['links'][1]", array("id"=>'3',"class"=>'9') );
Note how the array name itself is not part of the structure descriptor. But you could theoretically keep it. Instead call the array_create() function with a $tmp variable, and afterwards extract() it to achieve the desired effect:
array_create($tmp, "res[0][links][0]", array(1,2,3,4,5));
extract($tmp);
Another lazy solution would be to use str_parse after a loop combining the array description with the data array as URL-encoded string.
I have a very stupid way for this, you can try this :-)
Suppose your string is "res[0]['links'][0]" first append $ in this and then put in eval command and it will really rock you. Follow the following example
$tmp = '$'.'res[0]['links'][0]'.'= array()';
eval($tmp);
Now you can use your array $res
100% work around and :-)
`
$res = array();
$res[0]['links'][0] = array("id"=>'1',"class"=>'3');
$res[0]['links'][0] = array("id"=>'3',"class"=>'9');
print_r($res);
but read the comments first and learn about arrays first.
In addition to mario's answer, I used another function from php.net comments, together, to make input array (output from jquery form serializeArray) like this:
[2] => Array
(
[name] => apple[color]
[value] => red
)
[3] => Array
(
[name] => appleSeeds[27][genome]
[value] => 201
)
[4] => Array
(
[name] => appleSeeds[27][age]
[value] => 2 weeks
)
[5] => Array
(
[name] => apple[age]
[value] => 3 weeks
)
[6] => Array
(
[name] => appleSeeds[29][genome]
[value] => 103
)
[7] => Array
(
[name] => appleSeeds[29][age]
[value] => 2.2 weeks
)
into
Array
(
[apple] => Array
(
[color] => red
[age] => 3 weeks
)
[appleSeeds] => Array
(
[27] => Array
(
[genome] => 201
[age] => 2 weeks
)
[29] => Array
(
[genome] => 103
[age] => 2.2 weeks
)
)
)
This allowed to maintain numeric keys, without incremental appending of array_merge. So, I used sequence like this:
function MergeArrays($Arr1, $Arr2) {
foreach($Arr2 as $key => $Value) {
if(array_key_exists($key, $Arr1) && is_array($Value)) {
$Arr1[$key] = MergeArrays($Arr1[$key], $Arr2[$key]);
}
else { $Arr1[$key] = $Value; }
}
return $Arr1;
}
function array_create(&$target, $desc, $fill) {
preg_match_all("/[^\[\]']+/", $desc, $uu);
foreach ($uu[0] as $sub) {
if (! isset($target[$sub])) {
$target[$sub] = array();
}
$target = & $target[$sub];
}
$target = $fill;
}
$input = $_POST['formData'];
$result = array();
foreach ($input as $k => $v) {
$sub = array();
array_create($sub, $v['name'], $v['value']);
$result = MergeArrays($result, $sub);
}
I have a multidimensional array and am trying to group them according to the value in a specific column.
I'm trying to group them by level, but I won't actually know the level beforehand. So, it's not like I can put it in a for loop and say while $i < 7, because I won't know that 7 is the maximum value for the level key, and frankly, I'm not sure that's how I would need to do it even if I did.
[
['cust' => 'XT8900', 'type' => 'standard', 'level' => 1],
['cust' => 'XT8944', 'type' => 'standard', 'level' => 1],
['cust' => 'XT8922', 'type' => 'premier', 'level' => 3],
['cust' => 'XT8816', 'type' => 'permier', 'level' => 3],
['cust' => 'XT7434', 'type' => 'standard', 'level' => 7],
]
Desired result:
Array (
[1] => Array (
[0] => Array (
[cust] => XT8900
[type] => standard
)
[1] => Array (
[cust] => XT8944
[type] => standard
)
)
[3] => Array (
[2] => Array (
[cust] => XT8922
[type] => premier
)
[3] => Array (
[cust] => XT8816
[type] => permier
)
)
[7] => Array (
[4] => Array (
[cust] => XT7434
[type] => standard
)
)
)
Best way, if you have control over building the initial array, is just set things up like that at the start as you add entries.
If not then build a temporary array to sort:
foreach ($input_arr as $key => &$entry) {
$level_arr[$entry['level']][$key] = $entry;
}
Leaves you with the form you wanted and everything referenced together.
Build the array like that in the first place though if at all possible.
You need to group them by level first
Use foreach to loop into array check if the level is the same with the previous item then group it with that array
$templevel=0;
$newkey=0;
$grouparr[$templevel]="";
foreach ($items as $key => $val) {
if ($templevel==$val['level']){
$grouparr[$templevel][$newkey]=$val;
} else {
$grouparr[$val['level']][$newkey]=$val;
}
$newkey++;
}
print($grouparr);
The output of print($grouparr); will display like the format you hoped for
You can also try to
print($grouparr[7]);
Will display
[7] => Array (
[4] => Array (
[cust] => XT7434
[type] => standard
)
)
Or
print($grouparr[3]);
Will display
[3] => Array (
[2] => Array (
[cust] => XT8922
[type] => premier
)
[3] => Array (
[cust] => XT8816
[type] => permier
)
)
Here is the solution I landed on for an identical problem, wrapped as a function:
function arraySort($input,$sortkey){
foreach ($input as $key=>$val) $output[$val[$sortkey]][]=$val;
return $output;
}
To sort $myarray by the key named "level" just do this:
$myArray = arraySort($myArray,'level');
Or if you didn't want it as a function, just for a one time use, this would create $myNewArray from $myArray grouped by the key 'level'
foreach ($myArray as $key=>$val) $myNewArray[$val['level']][]=$val;
function group_assoc($array, $key) {
$return = array();
foreach($array as $v) {
$return[$v[$key]][] = $v;
}
return $return;
}
//Group the requests by their account_id
$account_requests = group_assoc($requests, 'account_id');
$result = array();
foreach ($yourArrayList as $data) {
$id = $data['level'];
if (isset($result[$id])) {
$result[$id][] = $data;
} else {
$result[$id] = array($data);
}
}
Best ans.
$levels = array_unique(array_column($records, 'level'));
$data = array();
foreach($records as $key => $value){
$data[$levels[array_search($value['level'],$levels )]][] = $value ;
}
print_r($data);
To generate the question's exact desured output from the sample input, pull/pop the last value from each row, use that value as the first level grouping key. Then use the original first level index as the second level key. Then push the two remaining elements into the group's subset.
Code: (Demo)
$result = [];
foreach ($array as $key => $row) {
$result[array_pop($row)][$key] = $row;
}
var_export($result);
For functional style syntax, use array_reduce(). (Demo)
var_export(
array_reduce(
array_keys($array),
function($result, $key) use ($array) {
$result[array_pop($array[$key])][$key] = $array[$key];
return $result;
}
)
);
function _group_by($array,$key,$keyName)
{
$return = array();
foreach($array as $val) {
$return[$keyName.$val[$key]][] = $val;
}
return $return;
} //end of function