I have an multidimensional array:
Array
(
[0] => Array
(
[Id] => 1
[MTime_Id] => 1
[MName] => Breakfast
[DName] => Other Cereals
[IName] =>
[Date] => 2013-02-05
)
[1] => Array
(
[Id] => 1
[MTime_Id] => 1
[MName] => Breakfast
[DName] => Porridge
[IName] => Oats,Milk,Sugar
[Date] => 2013-02-06
)
[2] => Array
(
[Id] => 1
[MTime_Id] => 1
[MName] => Breakfast
[DName] => Porridge
[IName] => Oats,Milk,Sugar,Oats,Milk,Sugar
[Date] => 2013-02-05
)
)
And I am trying to use array unique to filter this
[IName] => Oats,Milk,Sugar,Oats,Milk,Sugar
I am having no luck. How can I filter the duplicates?
Cheers.
If you filter input and therefore don't have extra spaces in IName field, you can use something as simple as this for filtering:
$array[2]['IName'] = implode(',', array_unique(explode(',', $array[2]['IName'])));
The problem is that you habe in array two Oats,Milk,Sugar as element of IName, in array three you have Oats,Milk,Sugar,Oats,Milk,Sugar. This is not the same!
"Oats,Milk,Sugar"=="Oats,Milk,Sugar,Oats,Milk,Sugar" (or "Oats,Milk,Sugar".equals("Oats,Milk,Sugar,Oats,Milk,Sugar")) is false.
If you want to have it unique you have to explode the single results and then do a unique on it or you have to store the single values in seperate fields...
BTW: Here is a link how to remove duplicates from a multi dimensional array How to remove duplicate values from a multi-dimensional array in PHP
I am not sure if a function exists for that, here is a simple solution,
you can loop the array, and get the result of each value, then explode result, and insert it into an array.
then use the array_unique function.
try this:
$result = array();
foreach($arrays as $array)
{
$tmp = $array['IName'];
$tmp2 = explode(',',$tmp);
foreach ($tmp2 as $t)
{
$result[]=$t;
}
}
$array_unique = array_unique($result);
Related
This question already has answers here:
Group subarrays by one column, make comma-separated values from other column within groups
(2 answers)
Closed 3 years ago.
Here is the array which I have,
Array
(
[0] => Array
(
[number] => 2
[name] => ABC
)
[1] => Array
(
[number] => 3
[name] => ABC
)
[2] => Array
(
[number] => 1
[name] => XYZ
)
[3] => Array
(
[number] => 2
[name] => XYZ
)
)
what I want is...
Array
(
[0] => Array
(
[name] => XYZ
[number] => 1,2
)
[1] => Array
(
[name] => ABC
[number] => 2,3
)
)
it should be unique by name.
And numbers of particular name will be in comma separated.
please help me guys
Thanks in advance
You can do this in one loop but I prefer to do it in two loops as it will be easier to get the correct output with implode than adding commas and then removing them again.
Loop the array and build an associative array and make an array to collect the numbers.
Then loop again and implode the numbers to a string.
foreach($arr as $sub){
$res[$sub['name']]['name'] = $sub['name'];
$res[$sub['name']]['number'][] = $sub['number'];
}
foreach($res as &$sub){
$sub['number'] = implode(",", $sub['number']);
}
$res = array_values($res);
var_dump($res);
https://3v4l.org/PbGsu
You can use array_map, array_key_exists, array_values to get the desired results
$res = [];
array_map(function($v) use (&$res){
array_key_exists($v['name'], $res) ?
($res[$v['name']]['number'] = $res[$v['name']]['number'].','.$v['number'])
:
($res[$v['name']] = ['number' => $v['number'],'name' => $v['name']])
;
}, $arr);
$res = array_values($res);
Live Demo
To use
array_merge()
function.
If suppose your key values are same, your key and values are overwrites after merge your array.
I want to merge two arrays in order to get the data as per my requirement.
I am posting my result, please have a look.
First array:
Array
(
[0] => Array
(
[km_range] => 300
[id] => 2
[car_id] => 14782
)
[1] => Array
(
[km_range] => 100
[id] => 3
[car_id] => 14781
)
[2] => Array
(
[km_range] => 300
[id] => 4
[car_id] => 14783
)
)
Second array:
Array
(
[0] => Array
(
[user_id] => 9c2e00508cb28eeb1023ef774b122e86
[car_id] => 14783
[status] => favourite
)
)
I want to merge the second array into the first one, where the value at key car_id matches the equivalent value; otherwise it will return that field as null.
Required output:
<pre>Array
(
[0] => Array
(
[km_range] => 300
[id] => 2
[car_id] => 14782
)
[1] => Array
(
[km_range] => 100
[id] => 3
[car_id] => 14781
)
[2] => Array
(
[km_range] => 300
[id] => 4
[car_id] => 14783
[fav_status] => favourite
)
)
Since the merge is so specific I would try something like this:
foreach ($array1 as $index => $a1):
foreach ($array2 as $a2):
if ($a1['car_id'] == $a2['car_id']):
if ($a2['status'] == "favourite"):
$array1[$index]['fav_status'] = "favourite";
endif;
endif;
endforeach;
endforeach;
You might be able to optimize the code more but this should be very easy to follow...
Another way to achieve this without using the index syntax is to reference the array elements in the foreach by-reference by prepending the ampersand operator:
foreach($firstArray as &$nestedArray1) {
foreach($secondArray as $nestedArray2) {
if ($nestedArray1['car_id'] == $nestedArray2['car_id']) {
$nestedArray1['fav_status'] = $nestedArray2['status'];
}
}
}
You can see it in action in this Playground example.
Technically you asked about merging the arrays. While the keys would be different between the input arrays and the desired output (i.e. "status" vs "fav_status"), array_merge() can be used to merge the arrays.
if ($nestedArray1['car_id'] == $nestedArray2['car_id']) {
$nestedArray1 = array_merge($nestedArray1, $nestedArray2);
}
Playground example.
Additionally the union operators (i.e. +, +=) can be used.
If you want to append array elements from the second array to the first array while not overwriting the elements from the first array and not re-indexing, use the + array union operator1
if ($nestedArray1['car_id'] == $nestedArray2['car_id']) {
$nestedArray1 += nestedArray1;
}
Playground example.
1http://php.net/manual/en/function.array-merge.php#example-5587
I want to check a multi dimensional array for a key value and print its parent array's another key value. This might confuse a bit. But the below example can make it clear. I have a array like this.
Entity Response : Array
(
[0] => Array
(
[type] => FieldTerminology
[relevance] => 0.709023
[count] => 4
[text] => domain name
)
[1] => Array
(
[type] => Company
[relevance] => 0.603375
[count] => 2
[text] => Laravel
)
[2] => Array
(
[type] => Person
[relevance] => 0.548389
[count] => 1
[text] => M. Naveen Kumar
)
I want to check if any array has a key [type] and its value = "Person" , then i want to get its value of the key[text]. In this case I want to print M. Naveen Kumar
You can traverse the array to find it. you can use foreach(), array_walk() and so on.
$o = [];
array_walk($array, function($v) useļ¼&$o){$v['type'] == 'Person' ? $o[] = $v['text'] : '';});
var_dump($o);
Try this
$people = array_filter($array, function($each) { return $each['type'] == 'Person'; });
$names = array_map(function($each) { return $each['name']; }, $people);
How does this work step by step?
Filter the array by type using array_filter
Then map to names using array_map
I have this array:
Array
(
[0] => Array
(
[date] => 2016-03-08
[value] => Array
(
[key_1] => Array
(
[test_1] => 1
[test_2] => 10
[test_3] => 1000
[test_4] => 200
)
[key_2] => Array
(
[test_1] => 1
[test_2] => 15
[test_3] => 1500
[test_4] => 100
)
)
)
Now I have another array :
Array
(
[key_3] => Array
(
[test_1] =>
[test_2] =>
[test_3] =>
[test_4] => 1
)
)
I want to add this last array in the first array.
I try like this : array_push($ymlParsedData[]['value'], $a_big_gift); but not work. Can you help me please ?
You can't use $ymlParsedData[] for accessing specific element, it is a shorthand for pushing data to array.
You can use either
// NB! array_push() just adds the values, key 'key_3' is removed
array_push($ymlParsedData[0]['value'], $a_big_gift);
or
// will keep key 'key_3'
$ymlParsedData[0]['value']['key_3'] = $a_big_gift['key_3'];
or
// use array_merge() instead
$ymlParsedData[0]['value'] = array_merge($ymlParsedData[0]['value'], $a_big_gift);
A complicated answer, but this might solve your issue:
$key_name = array_keys($a_big_gift)[0];
$ymlParsedData[0]['value'][$key_name] = $a_big_gift[$key_name];
echo '<pre>'; print_r($ymlParsedData); exit;
Note: For making it dynamic and for more than one value of $a_big_gift, you need to loop it and achieve your result.
Try this
array_push($ymlParsedData[0]['value'], $a_big_gift['key_3']);
How can i make the values of such an array unique.
Array ( [0] => Array ( [0] => wallet [1] => pen [2] => perfume [3] => pen) )
as there is pen twice i would like it to be deleted in this way :
( [0] => Array ( [0] => wallet [1] => pen [2] => perfume) )
OR
( [0] => Array ( [0] => wallet [1] => perfume [2] => pen) )
and i would like it to apply for any length.
thanks for your help
How about array_flip used twice:
$arr = Array(0 => wallet, 1 => pen, 2 => perfume, 3 => pen);
$arr = array_flip(array_flip($arr));
print_r($arr);
output:
Array
(
[0] => wallet
[3] => pen
[2] => perfume
)
If you want to renumbered the indexes, add this ligne after:
$arr = array_values($arr);
if you just want to select a unique value you need to pass the array that you want to compare the values, I am assuming you passed the main array, you need to pass the array where the problem is found which is in your case the index 0 of an array
$result = array_unique($input[0]);
$input will have an array of unique values so pen will not be 2
if you need to delete any duplicated values in the array you can do this.
$input[0] = array_unique($input[0]);
if you need to reset the index you can use this
$new_index = array_values($input[0]);
print_r($new_index);
$tmp = array ();
foreach ($array as $row)
array_push($tmp,array_unique($row));
Here is the solution for multi dimensopnal array
$res = array();
foreach($your_array as $key=>$val){
$res[$key] = array_unique($val);
}
echo "<pre>";
print_r($res);