I have an array $indexedarray
printr($indexedarray) gives something like this
array (size=3)
0 => string 'Homes' (length=5)
1 => string 'Apartments' (length=10)
2 => string 'Villas' (length=6)
I want to change this arrays index also same as value, like
array (size=3)
'Homes' => string 'Homes' (length=5)
'Apartments' => string 'Apartments' (length=10)
'Villas' => string 'Villas' (length=6)
is it posssible??
You can use array_combine:
$indexedarray= ['Homes', 'Apartments', 'Villas'];
print_r(array_combine($indexedarray, $indexedarray));
Gives:
Array
(
[Homes] => Homes
[Apartments] => Apartments
[Villas] => Villas
)
But be aware that your duplicate values will be dropped. Keys will be unique!
Try This :
$myArray = [
0 => 'Homes',
1 => 'Apartments',
2 => 'Villas' ];
$newArray = [];
foreach($myArray as $key => $value){
$newArray[$value] = $value;
}
var_dump($newArray);
Related
Im trying to count how many times a delivery date is in my array but i seem to only be able to count the first level.
array (size=48)
'2000-01-01' =>
array (size=2)
'date' => string '2000-01-01' (length=10)
0 =>
array (size=2)
'van' => string '0' (length=1)
0 =>
array (size=619)
'drop' => string '0' (length=1)
0 =>
array (size=29)
'id' => string '18137' (length=5)
'order_number' => string '13550' (length=5)
'reference' => string '' (length=0)
'delivery_date' => string '2000-01-01' (length=10)
I've tried:
$counts = array_count_values(array_flip(array_column($output, 'delivery_date')));
and
$array = array_map(function($element){
return $element['delivery_date'];
}, $output);
$array2 = (array_count_values($array));
print_r($array2);
in the end i either end up with a array to string error or the value 1.
how Would i go about counting these?
Thanks.
You could make use of array_walk_recursive and increment an array value every time the delivery_date key is present in the array at any level:
$counts = [];
array_walk_recursive(
$output,
static function ($value, string $key) use (&$counts): void {
if ($key === 'delivery_date') {
$counts[$value] = ($counts[$value] ?? 0) + 1;
}
}
);
I have this json string as below:
$json = '[{"sessionNo":"1","sessionData":["4","6"]},{"sessionNo":"2","sessionData":["2"]},{"sessionNo":"3"}]';
I want to "translate" it as a PHP array. I tried to do the following but it returns an empty array :
var_dump(json_decode($json))
**UPDATE**
Now I am getting this:
array (size=3)
0 =>
array (size=2)
'sessionNo' => string '1' (length=1)
'sessionData' =>
array (size=2)
0 => string '4' (length=1)
1 => string '6' (length=1)
1 =>
array (size=2)
'sessionNo' => string '2' (length=1)
'sessionData' =>
array (size=1)
0 => string '2' (length=1)
2 =>
array (size=1)
'sessionNo' => string '3' (length=1)
I want to loop through this array so I get for each sessionNo the corresponding SessionData, smth like:
sessionNo SessionData
1 4
1 6
2 2
You can use something like...
$json = '[{"sessionNo":"1","sessionData":["4","6"]},{"sessionNo":"2","sessionData":["2"]},{"sessionNo":"3"}]';
$array = json_decode($json, true);
foreach ( $array as $session ) {
if ( isset ($session['sessionData'])){
foreach ( $session['sessionData'] as $data ) {
echo $session['sessionNo']."-".$data.PHP_EOL;
}
}
}
This is just converting the data and then loop over the arrays in a foreach(), only doing the inner one if there is any sessionData.
This outputs..
1-4
1-6
2-2
I have string like this:
EUR-USD,USD-EUR,SEk-CAD
I want to make this to an array and sort by second currency and I want to the result to be
SEk-CAD,USD-EUR,EUR-USD
(Sorted by CAD, EUR and USD)
This is my attempt and it works, but I'm wondering if I'm not "overdoing" this? Anyone has an easier/better solution to achieve this?
Second currency
Create an array of currency pairs:
array (size=3)
0 =>
array (size=2)
0 => string 'EUR' (length=3)
1 => string 'USD' (length=3)
1 =>
array (size=2)
0 => string 'USD' (length=3)
1 => string 'EUR' (length=3)
2 =>
array (size=2)
0 => string 'SEk' (length=3)
1 => string 'CAD' (length=3)
Reverse order of currencies pairs in above array and put them into a non mutlidimensional array:
array (size=3)
0 => string 'USD-EUR' (length=7)
1 => string 'EUR-USD' (length=7)
2 => string 'CAD-SEk' (length=7)
Sort the array (with sort() ) and glue that array into a new string
string 'CAD-SEk,EUR-USD,USD-EUR' (length=23)
Make an array of currency pairs from the newly created string:
array (size=3)
0 =>
array (size=2)
0 => string 'CAD' (length=3)
1 => string 'SEk' (length=3)
1 =>
array (size=2)
0 => string 'EUR' (length=3)
1 => string 'USD' (length=3)
2 =>
array (size=2)
0 => string 'USD' (length=3)
1 => string 'EUR' (length=3)
Reverse order of currencies pairs in above array and put them into a non mutlidimensional array:
array (size=3)
0 => string 'SEk-CAD' (length=7)
1 => string 'USD-EUR' (length=7)
2 => string 'EUR-USD' (length=7)
Glue the array together into a final string:
string 'SEk-CAD,USD-EUR,EUR-USD' (length=23)
Try this:
$currency_string = "EUR-USD,USD-EUR,SEk-CAD";
$currency_array = explode(",", $currency_string);
function compare($a, $b) {
$a = explode("-", $a);
$b = explode("-", $b);
if ($a[1] === $b[1]){
return 0;
}
return ($a[1] < $b[1]) ? -1 : 1;
}
usort($currency_array, "compare");
$final_currency_string = implode(",", $currency_array);
echo $final_currency_string; // Prints SEk-CAD,USD-EUR,EUR-USD
Hope this helps.
I have the following data structure:
array (size=3)
0 =>
array (size=4)
0 => string 'apple' (length=5)
1 => string 'colophon' (length=8)
2 => string 'byo-fusion-drive' (length=16)
3 => string 'scroll-targeting' (length=16)
1 =>
array (size=3)
0 => string 'apply' (length=5)
1 => string 'exploring-web-typography' (length=24)
2 => string 'on-performance-content-management' (length=33)
2 =>
array (size=3)
0 => string 'macbook' (length=7)
1 => string 'colophon' (length=8)
2 => string 'nifty-minidrive' (length=15)
I'm trying to find out which, if any, arrays in my collection of arrays share a common value.
E.g: Arrays 0 and 2 share the string "colophon".
I've tried using array_intersect but this, of course, returns NULL since array 1 has no values in common with the others.
Also, it's possible (likely even) that in any given collection there will be no common value. The collection of arrays will always contain at least two arrays. There could be any number of additional arrays in the collection.
With the data described above, the end result should be something like this:
array (size=2)
0 =>
array (size=4)
0 => string 'apple' (length=5)
1 => string 'colophon' (length=8)
2 => string 'byo-fusion-drive' (length=16)
3 => string 'scroll-targeting' (length=16)
1 =>
array (size=3)
0 => string 'macbook' (length=7)
1 => string 'colophon' (length=8)
2 => string 'nifty-minidrive' (length=15)
I.e: With array 1 (from the original) being removed as it shares no common value.
I'm sure there's a simple way to do this, but I have been trying for 8+ hours now and have decided to ask for help.
Anyone?
You'll need to iterate it with a nested loop. like so:
$array = array(
array(
"apple",
"colophon",
"byo-fusion-drive",
"scroll-targeting"
),
array(
"apply",
"exploring-web-typography",
"on-performance-content-management"
),
array(
"macbook",
"colophon",
"nifty-minidrive"
)
);
for ($i = 0; $i < count($array); $i++) {
for ($j = $i+1; $j < count($array); $j++) {
var_dump(array_intersect($array[$i], $array[$j]));
}
}
Which outputs:
array (size=0)
empty
array (size=1)
1 => string 'colophon' (length=8)
array (size=0)
empty
A simple modification to the loop gives the expected behavior:
$result = array();
for ($i = 0; $i < count($array); $i++) { //Start from the first array, and continue up to all of them.
for ($j = $i+1; $j < count($array); $j++) { //Start with the current array of $i, +1. So that collisions never occur.
if (count(array_intersect($array[$i], $array[$j])) !== 0) { //If there are common values (the array_intersect() function returns a non-empty array
if (!in_array($array[$i], $result)) $result[] = $array[$i]; //Add the first array (if it's not there already)
if (!in_array($array[$j], $result)) $result[] = $array[$j]; //Add the second array (if it's not there already)
}
}
}
Which outputs
array (size=2)
0 =>
array (size=4)
0 => string 'apple' (length=5)
1 => string 'colophon' (length=8)
2 => string 'byo-fusion-drive' (length=16)
3 => string 'scroll-targeting' (length=16)
1 =>
array (size=3)
0 => string 'macbook' (length=7)
1 => string 'colophon' (length=8)
2 => string 'nifty-minidrive' (length=15)
Try
$arr = array (
array('apple', 'colophon', 'byo-fusion-drive', 'scroll-targeting', ),
array('apply', 'exploring-web-typography', 'on-performance-content-management', ),
array('macbook', 'colophon', 'nifty-minidrive', 'nifty-minidrive', ),
);
$repeated_values = array_keys(
array_filter(
array_count_values(
array_reduce($arr, function ($res, $value) {
return array_merge($res, array_unique($value));
}, array()
)
), function ($count) {
return $count > 1;
})
);
$result = array_filter($arr, function($value) use ($repeated_values) {
if (sizeof(array_intersect($repeated_values, $value)) > 0) return true;
});
var_dump($result);
Output
array (size=2)
0 =>
array (size=4)
0 => string 'apple' (length=5)
1 => string 'colophon' (length=8)
2 => string 'byo-fusion-drive' (length=16)
3 => string 'scroll-targeting' (length=16)
2 =>
array (size=4)
0 => string 'macbook' (length=7)
1 => string 'colophon' (length=8)
2 => string 'nifty-minidrive' (length=15)
3 => string 'nifty-minidrive' (length=15)
i have foreach, which generate following arrays:
==== array 1 ====
array
0 =>
array
'tag' => string 'daf' (length=3)
1 =>
array
'tag' => string 'daa' (length=3)
2 =>
array
'tag' => string 'daf' (length=3)
3 =>
array
'tag' => string 'daaa' (length=4)
4 =>
array
'tag' => string 'daf' (length=3)
5 =>
array
'tag' => string 'daa' (length=3)
6 =>
array
'tag' => string 'daf' (length=3)
7 =>
array
'tag' => string 'daf' (length=3)
8 =>
array
'tag' => string 'daf' (length=3)
9 =>
array
'tag' => string 'abd' (length=3)
10 =>
array
'tag' => string 'abdaa' (length=5)
11 =>
array
'tag' => string 'abda' (length=4)
==== array 2 ====
array
0 =>
array
'tag' => string 'daf' (length=3)
1 =>
array
'tag' => string 'test1' (length=5)
As output i want to get something like:
array
'daf' => '7'
'daa' => '2'
'daaa' => '1'
'abd' => '1'
'abdaa' => '1'
'abda' => '1'
'test1' => '1'
The value of the new array is the count of the element from all aray generatet from the loop. array_count_values() doesn't work here...any suggestions, how to solve the problem?
Did not notice it was 2 dimensional array.
Here is another code.
var_export(
array_count_values(
call_user_func_array('array_merge', array_merge($array1, $array2))
)
);
Something a bit like this should work:
$result = array();
foreach (array_merge($array1, $array2) as $item) {
$name = $item['tag'];
if (!isset($result[$name])) {
$result[$name] = 0;
}
$result[$name]++;
}
Let's make some use of the Standard PHP Library (SPL).
You can "flatten" an array with an RecursiveArrayIterator and RecursiveIteratorIterator. As a result you get an iterator that visits each leaf of your n-dimensional array and still let's you access the actual key of the element. In the next step concat both RecursiveIteratorIterators with an AppendIterator acting like a single interator that visits each element in all of its inner (appended) iterators.
$ai = new AppendIterator;
$ai->append(new RecursiveIteratorIterator(new RecursiveArrayIterator($array1)));
$ai->append(new RecursiveIteratorIterator(new RecursiveArrayIterator($array2)));
$counters = array();
foreach($ai as $key=>$value) {
if ( 'tag'===$key ) {
// # because I don't care whether this array element exists beforehand or not.
// $value has to be something that can be used as an array key (strings in this case)
#$counters[$value] += 1;
}
}
If you want you can even use a FilterIterator instead of the if('tag'===$key). But imho this doesn't increase the readability/value of the code ;-)