I have an array that stores some values. I'm trying to detect the similar values and add them to new array.
example:
$arrayA = array( 1,4,5,6,4,2,1);
$newarray = (4,1);
Any help?
Use the array_intersect() method. For example
$arrayA = array(1,4,5,6,4,2,1);
$arrayB = array(4,1);
$common_values = array_intersect($arrayA, $arrayB);
try this:
$array = array(1,4,5,6,4,2,1);
$duplicates = array_unique(array_diff_assoc($array, array_unique($array)));
$a1 = array( 1,4,5,6,4,2,1);
$a = array();
foreach($a1 as $value){
if(!in_array($value, $a)){
$a[] = $value;
}
}
$arrayA = array(1,4,5,6,4,2,1);
$newarray = array_diff_assoc($arrayA, array_unique($arrayA));
Related
I use laravel. And then when from submitted, it pass value as array.
My question is, how i can split the value? I want number before '-' and after '-'.
I want just like below:
and
My code just like below
$form = $request->all();
$emelto = $form['emelto'];
$split = explode('-', $emelto );
but it shows error
explode() expects parameter 2 to be string, array given
Please someone can help me.
Explode each individual string as you tried.
Insert each number in it's respective column index in result.
Snippet:
<?php
$emelto = [
'4-2',
'11-5'
];
$data = [];
foreach($emelto as $str){
foreach(explode('-',$str) as $index => $s){
$data[$index] = $data[$index] ?? [];// assuming your PHP version supports ??
$data[$index][] = $s;
}
}
print_r($data);
You can use
$array1 = array();
$array2 = array();
foreach($request->emelto as $val){
$dataArray = explode('-', $val);
$array1[] = $dataArray[0];
$array2[] = $dataArray[1];
}
$emelto is an array and you are passing it to explode. You have to pass it like $emelto[0].
You should update your code with the below one.
<?php
$form = $request->all();
$emelto = $form['emelto'];
$array1 = explode('-', $emelto[0] );
$array2 = explode('-', $emelto[1] );
$array3 = array();
array_push($array3, $array1[0]);
array_push($array3, $array2[0]);
$array4 = array();
array_push($array4, $array1[1]);
array_push($array4, $array2[2]);
?>
i have this array
$array = array(
"http://www.mywebsite.com/eternal_link_1",
"http://www.mywebsite.com/eternal_link_2/",
"http://www.mywebsite.com/eternal_link_1/#",
"http://subdomain1.mywebwite.com",
"http://subdomain2.mywebwite.com/eternal_link",
"http://www.external-link.com"
);
$eternal_links = array();
$subdomain_links = array();
$external_links = array();
how i can filter $array and add the values to the 3 arrays above?
You can use strpos to find the correct string.
foreach($array as $item){
if(strpos($item, 'external') == TRUE){
array_push($external_links, $item);
}
// and go on..
}
What is the best way to achieve the following? I.e. building the array keys from another array dynamically?
$array = (
'key1',
'key2',
'key3'
);
Resulting in:: $arr['key1']['key2']['key3'] = array()/value;
So in other words the more values you add to $array (and or less) then the corresponding mulitidensional array is built up.
Thanks
You could easily build a recursive function, or I use a reference:
$array = array('key1', 'key2', 'key3');
$result = array();
$temp = &$result;
foreach($array as $key) {
$temp =& $temp[$key];
}
$temp = 'value'; //or whatever
var_dump($result);
I'd already started, so I'll post my answer even though there's already an accepted answer:
$input = array('key1', 'key2', 'key3');
$result = array();
buildArray($input, $result);
print_r($result);
function buildArray($input, &$result){
if(0 == count($input))
return $result;
$next = array_shift($input);
$result[$next] = array();
buildArray($input, $result[$next]);
}
Works, though I think the answer posted by #AbraCadaver is more elegant.
I have a site developed in php (codeigniter) and I want to merge some array with same structure.
This is the constructor of my array:
$first = array();
$first['hotel'] = array();
$first['room'] = array();
$first['amenities'] = array();
/*
Insert data into $first array
*/
$second = array();
$second['hotel'] = array();
$second['room'] = array();
$second['amenities'] = array();
/*
Insert data into $second array
*/
After insert data I want to merge this array but the problem is that I have subarray inside it and I want to create a unique array like that:
$total = array();
$total['hotel'] = array();
$total['room'] = array();
$total['amenities'] = array();
This is the try to merge:
$total = array_merge((array)$first, (array)$second);
In this array I have only the $second array why?
Use the recursive version of array_merge called array_merge_recursive.
It seems like array_merge doesn't do what you think it does: "If the input arrays have the same string keys, then the later value for that key will overwrite the previous one." Try this:
function merge_subarrays ($first, $second)
$result = array();
foreach (array_keys($first) as $key) {
$result[$key] = array_merge($first[$key], $second[$key]);
};
return $result;
};
Then call it as:
$total = merge_subarrays($first, $second);
and, if I've correctly understood your question, $total will contain the result you're looking for.
There is no standard way of doing it, you just have to do something like:
<?php
$first = array();
$first['hotel'] = array('hello');
$first['room'] = array();
$first['amenities'] = array();
/*
Insert data into $first array
*/
$second = array();
$second['hotel'] = array('world');
$second['room'] = array();
$second['amenities'] = array();
$merged = array();
foreach( $first as $key => $value )
{
$merged[$key] = array_merge( $value, $second[$key] );
}
print_r( $merged );
I want to add data to an array dynamically. How can I do that? Example
$arr1 = [
'aaa',
'bbb',
'ccc',
];
// How can I now add another value?
$arr2 = [
'A' => 'aaa',
'B' => 'bbb',
'C' => 'ccc',
];
// How can I now add a D?
There are quite a few ways to work with dynamic arrays in PHP.
Initialise an array:
$array = array();
Add to an array:
$array[] = "item"; // for your $arr1
$array[$key] = "item"; // for your $arr2
array_push($array, "item", "another item");
Remove from an array:
$item = array_pop($array);
$item = array_shift($array);
unset($array[$key]);
There are plenty more ways, these are just some examples.
$array[] = 'Hi';
pushes on top of the array.
$array['Hi'] = 'FooBar';
sets a specific index.
Let's say you have defined an empty array:
$myArr = array();
If you want to simply add an element, e.g. 'New Element to Array', write
$myArr[] = 'New Element to Array';
if you are calling the data from the database, below code will work fine
$sql = "SELECT $element FROM $table";
$query = mysql_query($sql);
if(mysql_num_rows($query) > 0)//if it finds any row
{
while($result = mysql_fetch_object($query))
{
//adding data to the array
$myArr[] = $result->$element;
}
}
You should use method array_push to add value or array to array exists
$stack = array("orange", "banana");
array_push($stack, "apple", "raspberry");
print_r($stack);
/** GENERATED OUTPUT
Array
(
[0] => orange
[1] => banana
[2] => apple
[3] => raspberry
)
*/
Like this?:
$array[] = 'newItem';
In additon to directly accessing the array, there is also
array_push — Push one or more elements onto the end of array
$dynamicarray = array();
for($i=0;$i<10;$i++)
{
$dynamicarray[$i]=$i;
}
Adding array elements dynamically to an Array And adding new element
to an Array
$samplearr=array();
$count = 0;
foreach ($rslt as $row) {
$arr['feeds'][$count]['feed_id'] = $row->feed_id;
$arr['feeds'][$count]['feed_title'] = $row->feed_title;
$arr['feeds'][$count]['feed_url'] = $row->feed_url;
$arr['feeds'][$count]['cat_name'] = $this->get_catlist_details($row->feed_id);
foreach ($newelt as $cat) {
array_push($samplearr, $cat);
}
++$count;
}
$arr['categories'] = array_unique($samplearr); //,SORT_STRING
$response = array("status"=>"success","response"=>"Categories exists","result"=>$arr);
just for fun...
$array_a = array('0'=>'foo', '1'=>'bar');
$array_b = array('foo'=>'0', 'bar'=>'1');
$array_c = array_merge($array_a,$array_b);
$i = 0; $j = 0;
foreach ($array_c as $key => $value) {
if (is_numeric($key)) {$array_d[$i] = $value; $i++;}
if (is_numeric($value)) {$array_e[$j] = $key; $j++;}
}
print_r($array_d);
print_r($array_e);
Fastest way I think
$newArray = array();
for($count == 0;$row = mysql_fetch_assoc($getResults);$count++)
{
foreach($row as $key => $value)
{
$newArray[$count]{$key} = $row[$key];
}
}