I have an array of array .
Example like
a[0]={1,2,3};
a[1]={2,3,4};
**Edit** in a[2] from a[2]={4,5};
a[2]={2,4,5};
and more
How can I find common element which exist in all array ?
This is a function I have made. It's just a reference for a multidimensional array.
<?php
$array1 = array('angka'=>12,'satu','2'=>'dua','tiga'=>array('dua','enam','empat'=>array('satu','lima',12)));//object
$array2 = array('dua','tiga','empat',12);//object as intersect refference
function intersect($data=NULL)
{
if(!empty($data))
{
$crashed = array();
$crashed2 = array();
foreach($data[0] as $key=>$val)
{
if(!is_array($val))
{
$crashed[$key] = in_array($val,$data[1]);//return true if crashed (intersect)
}
else
{
$crashed2[$key] = intersect(array($val,$data[1]));
}
$crashed = array_merge($crashed,$crashed2);
}
}
return $crashed;
}
$intersect = intersect(array($array1,$array2));
print_r($intersect);
?>
It returns a result like this:
Array ( [angka] => 1 [0] => [1] => 1 [tiga] => Array ( [0] => 1 [1] => [empat] => Array ( [0] => [1] => [2] => 1 ) ) )
It returns true if the value of an array matches with a reference array.
Hope the code can help you.
Have a look here array-intersect.
You could use it like this:
$intersect = $a[0];
for ($i = 1; $i < count($a); $i++)
{
$intersect = array_intersect($intersect, $a[$i]);
}
You can avoid foreach loop by
call_user_func_array('array_intersect',$a);
As the name suggest, I think you can just use array-intersect
From that page:
<?php
$array1 = array("a" => "green", "red", "blue");
$array2 = array("b" => "green", "yellow", "red");
$result = array_intersect($array1, $array2);
print_r($result);
?>
gives
Array
(
[a] => green
[0] => red
)
Related
Array
(
)
Array
(
)
Array
(
[0] => 14
)
Array
(
[0] => 14
)
Array
(
[0] => 14
)
Array
(
[0] => 14
)
Array
(
[0] => 14
)
Array
(
[0] => 14
[1] => 12
)
I want this array
Array
(
[0] => 14
[1] => 12
)
Here is my code:
$colorarray = array();
foreach($catIds as $catid){
$colorarray[] = $catid;
}
Need to get unique array values
Thanks
You can use call_user_func_array with array-merge for flatten your array and then use array-unique as:
$res = call_user_func_array('array_merge', $arr);
print_r(array_unique($res)); // will give 12 and 14
Live example 3v4l
Or as #Progrock suggested: $output = array_unique(array_merge(...$data)); (I like that syntax using the ...)
You can always do something like this:
$colorarray = array();
foreach($catIds as $catid){
if(!in_array($catid, $colorarray) {
$colorarray[] = $catid;
}
}
But also this has n*n complexity, So if your array is way too big, it might not be the most optimised solution for you.
You can do following to generate unique array.
array_unique($YOUR_ARRAY_VARIABLE, SORT_REGULAR);
this way only unique value is there in your array instead of duplication.
UPDATED
This is also one way to do same
<?php
// define array
$a = array(1, 5, 2, 5, 1, 3, 2, 4, 5);
// print original array
echo "Original Array : \n";
print_r($a);
// remove duplicate values by using
// flipping keys and values
$a = array_flip($a);
// restore the array elements by again
// flipping keys and values.
$a = array_flip($a);
// re-order the array keys
$a= array_values($a);
// print updated array
echo "\nUpdated Array : \n ";
print_r($a);
?>
Reference link
Hope this will helps you
I have updated your code please check
$colorarray = array();
foreach($catIds as $catid){
$colorarray[$catid] = $catid;
}
This will give you 100% unique values.
PHP: Removes duplicate values from an array
<?php
$fruits_list = array('Orange', 'Apple', ' Banana', 'Cherry', ' Banana');
$result = array_unique($fruits_list);
print_r($result);
?>
------your case--------
$result = array_unique($catIds);
print_r($result);
You can construct a new array of all values by looping through each sub-array of the original, and then filter the result with array_unique:
<?php
$data =
[
[
0=>13
],
[
0=>13
],
[
0=>17,
1=>19
]
];
foreach($data as $array)
foreach($array as $v)
$all_values[] = $v;
var_export($all_values);
$unique = array_unique($all_values);
var_export($unique);
Output:
array (
0 => 13,
1 => 13,
2 => 17,
3 => 19,
)array (
0 => 13,
2 => 17,
3 => 19,
)
For example I have like more than 3 different arrays, with element like below:
1st array
hello-1
hi-1
2nd array
ok-two
hi-2
22-two
hello
3rd array
hi-3rd
hello3
And so on...
I want to combine this array in the order one by one. For example the expected output for the 3 arrays above would be:
hello-1
ok-two
hi-3rd
hi-1
hi-2
hello3
22-two
hello
I tried array_merge(). But it appends the 2nd array after the complete 1st array, which is not what I'm looking for, so here I'm kinda stuck and don't know which functions I can use here. Any hints or ideas?
This should work for you:
First I get the first element of each array into a sub array, then the second value into the next sub array and so on, that you get this structure of array:
Array
(
[0] => Array
(
[0] => hello-1
[1] => ok-two
[2] => hi-3rd
)
//...
)
After this you can just loop through each array value with array_walk_recursive() and get every value into your array.
<?php
$arr1 = [
"hello-1",
"hi-1",
];
$arr2 = [
"ok-two",
"hi-2",
"22-two",
"hello",
];
$arr3 = [
"hi-3rd",
"hello3",
];
$arr = call_user_func_array("array_map", [NULL, $arr1, $arr2, $arr3]);
$result = [];
array_walk_recursive($arr, function($v)use(&$result){
if(!is_null($v))
$result[] = $v;
});
print_r($result);
?>
output:
Array
(
[0] => hello-1
[1] => ok-two
[2] => hi-3rd
[3] => hi-1
[4] => hi-2
[5] => hello3
[6] => 22-two
[7] => hello
)
I have another way to solve this issue
<?php
$arr1 = array(
"hello-1",
"hi-1");
$arr2 = array("ok-two",
"hi-2",
"22-two",
"hello");
$arr3 = array(
"hi-3rd",
"hello3");
$max = count($arr1);
$max = count($arr2) > $max ? count($arr2) : $max;
$max = count($arr3) > $max ? count($arr3) : $max;
$result = array();
for ($i = 0; $i < $max; $i++) {
if (isset($arr1[$i])) {
$result[] = $arr1[$i];
}
if (isset($arr2[$i])) {
$result[] = $arr2[$i];
}
if (isset($arr3[$i])) {
$result[] = $arr3[$i];
}
}
print_r($result);
I have multiple arrays like this:
array (
[floorBuildingName] => Array
(
[0] => Lt.1
[1] => Lt.2
)
[roomFloorName] => Array
(
[0] => Single
[1] => Medium1
[2] => MaXI
)
)
I would like to merge the two arrays into a single array.
For example:
array (
[0] => array(
[0] =>Lt.1,
[1] =>Single
),
[1] => array(
[0] =>Lt.2,
[1] =>Medium1
),
[2] => array(
[0] =>Lt.2,
[1] =>MaXI
)
)
How can I achieve this?
First, you have to determine the maximum array length. Then, create a new array and finally, put the elements at the given index into the new array. If the index is out of bounds, then use the last element.
var $maxNumber = 0;
foreach ($myArray as $array) {
$maxNumber = max($maxNumber, count($array));
}
$result = array();
for ($index = 0; $index < $maxNumber; $index++) {
$result[] = array();
foreach($myArray as $array) {
if (count($array) < $maxNumber) {
$result[$index][] = $array(count($array) - 1);
} else {
$result[$index][] = $array[$index];
}
}
}
Assuming that you want to pad out uneven arrays with the last value in the array:
$data = ['floorBuildingName' => [..], ..];
// find the longest inner array
$max = max(array_map('count', $data));
// pad all arrays to the longest length
$data = array_map(function ($array) use ($max) {
return array_pad($array, $max, end($array));
}, $data);
// merge them
$merged = array_map(null, $data['floorBuildingName'], $data['roomFloorName']);
You can do this using array_map very Easily:
Try this code:
$arr1 = array(1, 2);
$arr2 = array('one', 'two', 'three', 'four');
while(count($arr1) != count($arr2)) {
//If Array1 is Shorter then Array2
if (count($arr1)<count($arr2)) {
$arr1[] = $arr1[count($arr1) - 1];
}
//If Array2 is Shorter then Array1
if (count($arr1) > count($arr2)) {
$arr2[] = $arr2[count($arr2) - 1];
}
}
//Now merge arrays
$newarray = (array_map(null, $arr1, $arr2));
print_r($newarray);
Will Output:
Array
(
[0] => Array
(
[0] => 1
[1] => one
)
[1] => Array
(
[0] => 2
[1] => two
)
[2] => Array
(
[0] => 2
[1] => three
)
[3] => Array
(
[0] => 2
[1] => four
)
)
there's the solution for different number of arguments:
$floorBuildingName = array(
'Lt.1',
'Lt.2'
);
$roomFloorName = array(
'Single', 'Medium1', 'MaXI'
);
class ValueArrayIterator extends ArrayIterator
{
protected $arrays;
protected $latestValues = [];
public function __construct(array $mainArray) {
parent::__construct($mainArray);
$this->arrays = func_get_args();
}
public function current()
{
$returnValue = [];
foreach ($this->arrays as $arrayKey => $array) {
if (isset($array[$this->key()])) {
$this->latestValues[$arrayKey] = $array[$this->key()];
}
$returnValue[] = $this->latestValues[$arrayKey];
}
return $returnValue;
}
}
$iterator = new ValueArrayIterator($roomFloorName, $floorBuildingName);
$newArray = iterator_to_array($iterator);
I have the following array defined.
$a = Array
(
[0] => 30:27
[1] => 29:28
[2] => 30:27
)
$b = Array
(
[0] => 102186
[3] => 102991
[4] => 102241
)
I have used array_map($a,$b); But not what i want the result comes.
Always first to first key, second to second key, third to third key, I expect the following result...
$ab = $b = Array
(
[0] => 102186 [30:27]
[1] => 102991 [29:28]
[2] => 102241 [30:27]
)
Edit:
If the array keys doesn't match (thought it was a typo), then just reset the arrays by using $a = array_values($a) and $b = array_values($b) like this:
$a = array(
0 => "30:27",
1 => "29:28",
2 => "30:27"
);
$b = array(
0 => "102186",
3 => "102991",
4 => "102241"
);
// Reset keys
$a = array_values($a);
$b = array_values($b);
$ab = array();
for ($i=0; $i < count($a); $i++) {
$ab[] = "{$b[$i]} [{$a[$i]}]";
}
echo "<pre>";
print_r($ab);
echo "</pre>";
Outputs:
Array
(
[0] => 102186 [30:27]
[1] => 102991 [29:28]
[2] => 102241 [30:27]
)
Just loop over the 1st array and add the corresponding value from the 2nd one. You can actually use array_map for this:
$ab = array_map(function($aVal, $bVal){
return "$bVal [$aVal]";
}, $a, $b);
DEMO: https://eval.in/78684
USE:
$arrayFirst and $arraySecond - your input arrays;
$result = array();
for ($i=0; $i < count($arrayFirst); $i++) {
$result[] = "{$arraySecond[$i]} [{$arrayFirst[$i]}]";
}
var_dump ($result);
Or array_merge_recursive()
$array = array_merge_recursive($array1, $array2);
How to merge many Arrays in php
$array1="Array ( [0] => mouse ) Array ( [0] => mac ) Array ( [0] => keyboard )";
how i can array like this
Array( [0] =>mouse [1] => mac [2] =>keyboard );
depending on how your arrays are being stored, there are a couple of options.
Here are 2 examples:
<?php
$old_array = array(
array('mouse'),
array('mac'),
array('keyboard')
);
$new_array = array();
foreach($old_array as $a){
$new_array[] = $a[0];
}
echo '<pre>',print_r($new_array),'</pre>';
//// OR ////
$array1 = array('mouse');
$array2 = array('mac');
$array3 = array('keyboard');
$new_array = array_merge($array1,$array2,$array3);
echo '<pre>',print_r($new_array),'</pre>';
You should use array_merge function of PHP.
This:
<?php
$a1=array("red","green");
$a2=array("blue","yellow");
print_r(array_merge($a1,$a2));
?>
will return this:
Array ( [0] => red [1] => green [2] => blue [3] => yellow )
It's as easy as a piece of cake! :)
Try it: http://www.w3schools.com/php/showphp.asp?filename=demo_func_array_merge
Tutorials:
http://www.w3schools.com/php/func_array_merge.asp
http://php.net/array_merge
So you basically have an array of arrays. You can do this in the following way:
$array = array(array(0 => 'mouse'), array(1 => 'mac'), array(2 => 'keyboard'));
$mergedArray = array();
foreach ($array as $part) {
$mergedArray = array_merge($mergedArray, $part);
}
var_dump($mergedArray);
The result is exactly what you would expect:
array(3) {
[0]=>
string(5) "mouse"
[1]=>
string(3) "mac"
[2]=>
string(8) "keyboard"
}
If you also have scalars in the big array, you can modify the loop to the following:
foreach ($array as $part) {
if (!is_array($part)) {
$mergedArray[] = $part;
} else {
$mergedArray = array_merge($mergedArray, $part);
}
}
Note: This will merge all values from all sub arrays, it's not limited to one entry per sub array.
php array_merge() function, Merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.
Merge N number of array using $array = array_merge( $array1 , $array2, $array3 ..... $arrayN);
$array1 = array ( '0' => 'mouse' );
$array2 = array ( '0' => 'mac' );
$array3 = array ( '0' => 'keyboard' );
$array = array_merge( $array1 , $array2, $array3);
echo "<pre>";
print_r($array);
echo "</pre>";
O/P:
Array
(
[0] => mouse
[1] => mac
[2] => keyboard
)
More info: http://us2.php.net/array_merge