I want to create function which creates multidimensional array from parameter and second parameter should be saved as value here. Expected result is below:
Array
(
[first] => Array
(
[second] => Array
(
[last] => value
)
)
)
what I got so far :
$array = ['first', 'second', 'last'];
function multiArray($array, $newArray = [], $valueToSave)
{
if($array) {
$value = current( $array );
$key = array_search($value, $array);
unset( $array[ $key ] );
$newArray[$value] = [];
return multiArray( $array, $newArray, $valueToSave);
} else {
return $newArray;
}
}
Any tips, what should I change or do next ?
You can try this simplest one.
Try this code snippet here
$array = ['first', 'second', "third", "fourth",'last'];
$value = "someValue";
$result = array();
$count = count($array);
for($x=$count-1;$x>=0;$x--)
{
if($x==$count-1):
$result[$array[$x]]=$value;//setting value for last index
else:
$tempArray = $result;//storing value temporarily
$result = array();//creating empty array
$result[$array[$x]] = $tempArray;//overriting values.
endif;
}
print_r($result);
Related
PHP seperate number using based on 2 delimiter
I have this variable $sid
$sid = isset($_POST['sid']) ? $_POST['sid'] : '';
and it's output is:
Array
(
[0] => 4|1
[1] => 5|2,3
)
Now I want to get the 1, 2, 3 as value so that I can run a query based on this number as ID.
How can I do this?
Use explode()
$arr = array(
0 => "4|1",
1=> "5|2,3"
);
$output = array();
foreach($arr as $a){
$right = explode("|",$a);
$rightPart = explode(",",$right[1]);
foreach($rightPart as $rp){
array_push($output,$rp);
}
}
var_dump($output);
Use foreach to loop thru your array. You can explode each string to convert it to an array. Use only the 2nd element of the array to merge
$sid = array('4|1','5|2,3');
$result = array();
foreach( $sid as $val ) {
$val = explode('|', $val, 2);
$result = array_merge( $result, explode(',', $val[1]) );
}
echo "<pre>";
print_r( $result );
echo "</pre>";
You can also use array_reduce
$sid = array('4|1','5|2,3');
$result = array_reduce($sid, function($c, $v){
$v = explode('|', $v, 2);
return array_merge($c, explode(',', $v[1]));
}, array());
These will result to:
Array
(
[0] => 1
[1] => 2
[2] => 3
)
You can do 2 explode with loop to accomplish it.
foreach($sid as $a){
$data = explode("|", $a)[1];
foreach(explode(",", $data) as $your_id){
//do you stuff with your id, for example
echo $your_id . '<br/>';
}
}
This question already has answers here:
PHP rename array keys in multidimensional array
(10 answers)
Closed last month.
When I var_dump on a variable called $tags (a multidimensional array) I get this:
Array
(
[0] => Array
(
[name] => tabbing
[url] => tabbing
)
[1] => Array
(
[name] => tabby ridiman
[url] => tabby-ridiman
)
[2] => Array
(
[name] => tables
[url] => tables
)
[3] => Array
(
[name] => tabloids
[url] => tabloids
)
[4] => Array
(
[name] => taco bell
[url] => taco-bell
)
[5] => Array
(
[name] => tacos
[url] => tacos
)
)
I would like to rename all array keys called "url" to be called "value". What would be a good way to do this?
You could use array_map() to do it.
$tags = array_map(function($tag) {
return array(
'name' => $tag['name'],
'value' => $tag['url']
);
}, $tags);
Loop through, set new key, unset old key.
foreach($tags as &$val){
$val['value'] = $val['url'];
unset($val['url']);
}
Talking about functional PHP, I have this more generic answer:
array_map(function($arr){
$ret = $arr;
$ret['value'] = $ret['url'];
unset($ret['url']);
return $ret;
}, $tag);
}
Recursive php rename keys function:
function replaceKeys($oldKey, $newKey, array $input){
$return = array();
foreach ($input as $key => $value) {
if ($key===$oldKey)
$key = $newKey;
if (is_array($value))
$value = replaceKeys( $oldKey, $newKey, $value);
$return[$key] = $value;
}
return $return;
}
foreach ($basearr as &$row)
{
$row['value'] = $row['url'];
unset( $row['url'] );
}
unset($row);
This should work in most versions of PHP 4+. Array map using anonymous functions is not supported below 5.3.
Also the foreach examples will throw a warning when using strict PHP error handling.
Here is a small multi-dimensional key renaming function. It can also be used to process arrays to have the correct keys for integrity throughout your app. It will not throw any errors when a key does not exist.
function multi_rename_key(&$array, $old_keys, $new_keys)
{
if(!is_array($array)){
($array=="") ? $array=array() : false;
return $array;
}
foreach($array as &$arr){
if (is_array($old_keys))
{
foreach($new_keys as $k => $new_key)
{
(isset($old_keys[$k])) ? true : $old_keys[$k]=NULL;
$arr[$new_key] = (isset($arr[$old_keys[$k]]) ? $arr[$old_keys[$k]] : null);
unset($arr[$old_keys[$k]]);
}
}else{
$arr[$new_keys] = (isset($arr[$old_keys]) ? $arr[$old_keys] : null);
unset($arr[$old_keys]);
}
}
return $array;
}
Usage is simple. You can either change a single key like in your example:
multi_rename_key($tags, "url", "value");
or a more complex multikey
multi_rename_key($tags, array("url","name"), array("value","title"));
It uses similar syntax as preg_replace() where the amount of $old_keys and $new_keys should be the same. However when they are not a blank key is added. This means you can use it to add a sort if schema to your array.
Use this all the time, hope it helps!
Very simple approach to replace keys in a multidimensional array, and maybe even a bit dangerous, but should work fine if you have some kind of control over the source array:
$array = [ 'oldkey' => [ 'oldkey' => 'wow'] ];
$new_array = json_decode(str_replace('"oldkey":', '"newkey":', json_encode($array)));
print_r($new_array); // [ 'newkey' => [ 'newkey' => 'wow'] ]
This doesn't have to be difficult in the least. You can simply assign the arrays around regardless of how deep they are in a multi-dimensional array:
$array['key_old'] = $array['key_new'];
unset($array['key_old']);
You can do it without any loop
Like below
$tags = str_replace("url", "value", json_encode($tags));
$tags = json_decode($tags, true);
class DataHelper{
private static function __renameArrayKeysRecursive($map = [], &$array = [], $level = 0, &$storage = []) {
foreach ($map as $old => $new) {
$old = preg_replace('/([\.]{1}+)$/', '', trim($old));
if ($new) {
if (!is_array($new)) {
$array[$new] = $array[$old];
$storage[$level][$old] = $new;
unset($array[$old]);
} else {
if (isset($array[$old])) {
static::__renameArrayKeysRecursive($new, $array[$old], $level + 1, $storage);
} else if (isset($array[$storage[$level][$old]])) {
static::__renameArrayKeysRecursive($new, $array[$storage[$level][$old]], $level + 1, $storage);
}
}
}
}
}
/**
* Renames array keys. (add "." at the end of key in mapping array if you want rename multidimentional array key).
* #param type $map
* #param type $array
*/
public static function renameArrayKeys($map = [], &$array = [])
{
$storage = [];
static::__renameArrayKeysRecursive($map, $array, 0, $storage);
unset($storage);
}
}
Use:
DataHelper::renameArrayKeys([
'a' => 'b',
'abc.' => [
'abcd' => 'dcba'
]
], $yourArray);
It is from duplicated question
$json = '[
{"product_id":"63","product_batch":"BAtch1","product_quantity":"50","product_price":"200","discount":"0","net_price":"20000"},
{"product_id":"67","product_batch":"Batch2","product_quantity":"50","product_price":"200","discount":"0","net_price":"20000"}
]';
$array = json_decode($json, true);
$out = array_map(function ($product) {
return array_merge([
'price' => $product['product_price'],
'quantity' => $product['product_quantity'],
], array_flip(array_filter(array_flip($product), function ($value) {
return $value != 'product_price' && $value != 'product_quantity';
})));
}, $array);
var_dump($out);
https://repl.it/#Piterden/Replace-keys-in-array
This is how I rename keys, especially with data that has been uploaded in a spreadsheet:
function changeKeys($array, $new_keys) {
$newArray = [];
foreach($array as $row) {
$oldKeys = array_keys($row);
$indexedRow = [];
foreach($new_keys as $index => $newKey)
$indexedRow[$newKey] = isset($oldKeys[$index]) ? $row[$oldKeys[$index]] : '';
$newArray[] = $indexedRow;
}
return $newArray;
}
Based on the great solution provided by Alex, I created a little more flexible solution based on a scenario I was dealing with. So now you can use the same function for multiple arrays with different numbers of nested key pairs, you just need to pass in an array of key names to use as replacements.
$data_arr = [
0 => ['46894', 'SS'],
1 => ['46855', 'AZ'],
];
function renameKeys(&$data_arr, $columnNames) {
// change key names to be easier to work with.
$data_arr = array_map(function($tag) use( $columnNames) {
$tempArray = [];
$foreachindex = 0;
foreach ($tag as $key => $item) {
$tempArray[$columnNames[$foreachindex]] = $item;
$foreachindex++;
}
return $tempArray;
}, $data_arr);
}
renameKeys($data_arr, ["STRATEGY_ID","DATA_SOURCE"]);
this work perfectly for me
$some_options = array();;
if( !empty( $some_options ) ) {
foreach( $some_options as $theme_options_key => $theme_options_value ) {
if (strpos( $theme_options_key,'abc') !== false) { //first we check if the value contain
$theme_options_new_key = str_replace( 'abc', 'xyz', $theme_options_key ); //if yes, we simply replace
unset( $some_options[$theme_options_key] );
$some_options[$theme_options_new_key] = $theme_options_value;
}
}
}
return $some_options;
This is my array format:
$data=["error.png","invoice_1.pdf","invoice2.png"];
But I want to this format:
$data=[{"file":"error.png"},{"file":"invoice_1.pdf"},{"file":"invoice2.png"}]
Thank you.
You should create a new array.
And loop through your existing array.
Its every element will be an array with a value from your array as value.
And key as the string file.
$arr = array();
foreach ($data as $elem) {
$arr[] = array('file' => $elem);
}
Try debugging if you get the correct array:
echo '<pre>';
print_r($arr);
echo '</pre>';
Lastly,
echo json_encode($arr);
exit;
Hope it works for you.
Use
$data = array_map(
function ($item) {
return array('file' => $item);
},
$data
);
to embed the values into arrays, or
$data = array_map(
function ($item) {
$x = new stdClass();
$x->file = $item;
return $x;
},
$data
);
to embed them into objects.
Or, better, use your own class instead of stdClass() and pass $item as argument to its constructor
$data = array_map(
function ($item) {
return new MyClass($item);
},
$data
);
$data = ["error.png", "invoice_1.pdf", "invoice2.png"];
$newarray = array();
foreach ($data as $val){
array_push($newarray, array("file" => $val));
}
print_r($newarray); //Array ( [0] => Array ( [file] => error.png ) [1] => Array ( [file] => invoice_1.pdf ) [2] => Array ( [file] => invoice2.png ) )
echo json_encode($newarray); // [{"file":"error.png"},{"file":"invoice_1.pdf"},{"file":"invoice2.png"}]
exit;
Just try this logic
$data = '["error.png","invoice_1.pdf","invoice2.png"]';
$data = json_decode($data);
$data = array_filter($data, function(&$item){return ($item = array('file' => $item));});
$data = json_encode($data);
I have an array that looks like this:
$array = array (
[level_1] => array (
[level_2] => array (
[level_3] => something
)
),
[level_12] => array (
[level_2] => somethingelse
),
[level_13] => array (
[level_22] => array (
[level_3] => something
)
),
);
The keys or values aren't always unique but the branches are.
And I have a string that looks like this:
$string = 'level_1-level_2-level_3';
Those are the keys for a branch.
And I need to somehow get the value from the array based on that string?
Like this:
$string_array = explode('-', $string);
$array[$string_array[0]][$string_array[1]][$string_array[2]] // something
But since the depth can be different this is not a viable solution...
Try this simple example, no need for a recursive function:
function get_item( $path, $array )
{
$paths = explode( '-', $path );
$result = $array;
foreach ( $paths as $path) {
isset( $result[$path] ) ? $result = $result[$path] : $result = false;
}
return $result;
}
$path = 'level_1-level_2-level_3';
echo get_item( $path, $array );
Try this:
$array = array (
'level_1' => array (
'level_2' => array (
'level_3' => 'something'
)
),
'level_12' => array (
'level_2' => 'somethingelse'
),
'level_13' => array (
'level_22' => array (
'level_3' => 'something'
)
),
);
$string = 'level_1-level_2-level_3';
$keys = explode('-', $string);
echo getItemIterative($keys, $array);
echo "\n";
echo getItemRecursive($keys, $array);
function getItemIterative($keys, $array)
{
$value = null;
foreach ($keys as $key) {
if ($value == null) {
$value = $array[$key];
}
if (is_array($value) && array_key_exists($key, $value)) {
$value = $value[$key];
}
}
return $value;
}
function getItemRecursive($keys, $array)
{
$key = array_shift($keys);
$value = $array[$key];
if (empty($keys)) {
return $value;
} else {
return getItemRecursive($keys, $value);
}
}
Make a $result variable which initially points to the root of the array, and loop through the levels of your $string_array 'til $result points at the leaf you were looking for.
// stuff you already have:
$array = array(...); // your big array
$string = 'level_1-level_2-level_3';
$string_array = explode('-', $string);
// new stuff:
$result = $array;
foreach ($string_array as $level) {
$result = $result[$level];
}
echo $result; // 'something'
Working example: Ideone
Suppose I have an array like this:
$array = array("a","b","c","d","a","a");
and I want to get all the keys that have the value "a".
I know I can get them using a while loop:
while ($a = current($array)) {
if ($a == 'a') {
echo key($array).',';
}
next($array);
}
How can I get them using a foreach loop instead?
I've tried:
foreach ($array as $a) {
if ($a == 'a') {
echo key($array).',';
}
}
and I got
1,1,1,
as the result.
If you would like all of the keys for a particular value, I would suggest using array_keys, using the optional search_value parameter.
$input = array("Foo" => "X", "Bar" => "X", "Fizz" => "O");
$result = array_keys( $input, "X" );
Where $result becomes
Array (
[0] => Foo
[1] => Bar
)
If you wish to use a foreach, you can iterate through each key/value set, adding the key to a new array collection when its value matches your search:
$array = array("a","b","c","d","a","a");
$keys = array();
foreach ( $array as $key => $value )
$value === "a" && array_push( $keys, $key );
Where $keys becomes
Array (
[0] => 0
[1] => 4
[2] => 5
)
You can use the below to print out keys with specific value
foreach ($array as $key=>$val) {
if ($val == 'a') {
echo $key." ";
}
}
here's a simpler filter.
$query = "a";
$result = array_keys(array_filter($array,
function($element)use($query){
if($element==$query) return true;
}
));
use
foreach($array as $key=>$val)
{
//access the $key as key.
}