How to skip inserting repeating same value of array items in my case? I know there is built in function like array unique but my case is different.
Below code produced 12345555555667 but I just want 1234567, means not a value is duplicate.
$NumArray = array('1','2','3','4','5','5','5','5','5','5','5','6','6','7');
$SecondArray = array();
foreach($NumArray as $num){
$SecondArray[] = array(
'alpa'=>$num
);
}
echo json_encode($SecondArray);
If $NumArray were static, it's as simple as doing:
foreach (array_unique($NumArray) as $num)
{
//same code as before
}
But given that it isn't, you could just write:
$SecondArray = ();
foreach ($NumArray as $num)
{
if (!isset($SecondArray[$num]))
{//key does not exist (yet)
$SecondArray[$num] = array('alpa' => $num);
}
}
echo json_encode(array_values($SecondArray));//remove keys, to ensure a JSON array
see the docs
The array_values call ensures the resulting JSON string is a JS array, and not an object. For example, if $num was 1, 2, 3, the JSON string without array_values would've looked like this:
{
1: {alpha: 1},
2: {alpha: 2},
3: {alpha: 3}
}
With that call, it looks like this:
[
{alpha: 1},
{alpha: 2},
{alpha: 3}
]
Create a new array, then loop the $NumArray to check if the value already exists... if not, add it to the new array.
<?php
$NumArray = array('1','2','3','4','5','5','5','5','5','5','5','6','6','7');
$newArray = array();
foreach( $NumArray as $val ) {
if( !in_array( $val, $newArray ) ) {
$newArray[] = $val;
}
}
echo '<pre>';
print_r( $newArray );
echo '</pre>';
?>
What about:
$NumArray = array('1','2','3','4','5','5','5','5','5','5','5','6','6','7');
$SecondArray = array();
foreach($NumArray as $key => $value){
if(in_array($value, $NumArray){
array_push($SecondArray, $value);
}
}
echo json_encode($SecondArray);
Related
I have a MYSQL query that fetches an array of dictionaries or results which are returned via JSON in an api. In some cases, I would like to change the name of the dictionary keys in the results array.
For example, in the following case:
$var = '[{"player":"Tiger Woods"},{"player":"Gary Player"}]';
I would like to change it to:
$var = '[{"golfer":"Tiger Woods"},{"golfer":"Gary Player"}]'
It is not practical in this case to change the mysql query so I'd just like to replace the word "player" with the word "golfer" for the keys without disturbing the values.
In the above example, I would not want to change Gary Player's name so just using str_replace does not seem like it would work.
Is there a way to change all of the keys from "player" to "golfer" without changing any of the values?
Here is the snippet you can use
$var = '[{"player":"Tiger Woods"},{"player":"Gary Player"}]';
// json decode the json string
$temp = json_decode($var, true);
$temp = array_map(function($item){
// combining key and values
return array_combine(['golfer'], $item);
}, $temp);
print_r($temp);
// or echo json_encode($temp);
Demo.
Some argue that foreach is fastest,
foreach($temp as $k => &$v){
$v = array_combine(['golfer'], $v);
}
print_r($temp);
Demo.
Little hardcoded if more than one keys in single array,
foreach ($temp as $k => &$v){
$v['golfer'] = $v['player'];
unset($v['player']);
}
print_r($temp);
Demo.
Using recursion
function custom($arr, $newKey, $oldKey)
{
// if the value is not an array, then you have reached the deepest
// point of the branch, so return the value
if (!is_array($arr)) {
return $arr;
}
$result = []; // empty array to hold copy of subject
foreach ($arr as $key => $value) {
// replace the key with the new key only if it is the old key
$key = ($key === $oldKey) ? $newKey : $key;
// add the value with the recursive call
$result[$key] = custom($value, $newKey, $oldKey);
}
return $result;
}
$var = '[{"player":"Tiger Woods"},{"player":"Gary Player"}]';
$temp = json_decode($var, true);
$temp = replaceKey($temp, 'golfer', 'player');
print_r($temp);
Demo & source.
Using json way,
function json_change_key($arr, $oldkey, $newkey) {
$json = str_replace('"'.$oldkey.'":', '"'.$newkey.'":', json_encode($arr));
return json_decode($json, true);
}
$temp = json_change_key($temp, 'player', 'golfer');
print_r($temp);
Demo
If you want multiple key replace, here is the trick,
$var = '[{"player":"Tiger Woods", "wins":"10","losses":"3"},{"player":"Gary Player","wins":"7", "losses":6}]';
$temp = json_decode($var, true);
function recursive_change_key($arr, $set)
{
if (is_array($arr) && is_array($set)) {
$newArr = [];
foreach ($arr as $k => $v) {
$key = array_key_exists($k, $set) ? $set[$k] : $k;
$newArr[$key] = is_array($v) ? recursive_change_key($v, $set) : $v;
}
return $newArr;
}
return $arr;
}
$set = [
"player" => "golfers",
"wins" => "victories",
"losses" => "defeats"
];
$temp = recursive_change_key($temp, $set);
print_r($temp);
Demo.
$a = '[{"player":"Tiger Woods"},{"player":"Gary Player"}]';
$array = json_decode($a, true);
foreach($array as $key=>$value){
if(array_keys($value)[0] === "player"){
$array[$key] = ["golfer" => array_values($value)[0]];
};
}
echo json_encode($array);
you can write the value of the key to a new key and then delete the old.
renaming a key called "a" to "b", while keeping the value.
var json = {
"a" : "one"
}
json["b"] = json["a"];
delete json["a"];
for your example, just use this with a loop.
source: https://sciter.com/forums/topic/how-to-rename-the-key-of-json/
I am getting an array similar to the following one.
{"form_data":["1","2","4","5","","6"],"final_data":["1","2","4","5","","6"]}
If form data values are null, I want to replace that key's value with the value of the next key.
Like above, after value 5, I have null values. It needs to be like this:
"final_data":["1","2","4","5","fill this with 6","remove this"]
"final_data":["1","2","4","5","6"] like this
I tried array_filter(), but it didn't help.
If the response is in json format then ...
$json = '{"form_data":["1","2","4","5","","6"],"final_data":["1","2","4","5","","6"]}';
$array = json_decode($json, TRUE);
foreach($array as $index => $a) {
$array[$index] = array_filter($a);
}
print_r($array);
https://eval.in/866379
Update:
foreach($array as $index => $a) {
$array[$index] = array_value(array_filter($a));
}
https://eval.in/866522
try following code,
foreach($myarray as $key=>$value)
{
if(is_null($value) || $value == '')
unset($myarray[$key]);
}
Try this array_filter() with array_map() and array_values()
<?php
$array = array("form_data" => array("1","2","4","5","","6"), "final_data" => array("1","2","4","5","","6"));
function filterMe($paraArr){
return array_values(array_filter($paraArr));
}
$array = array_map("filterMe",$array);
echo "<pre>";
print_r($array);
check the output here https://eval.in/866401
I'm trying to convert my array to JSON.
My JSON is stored in the database and will later be decoded for permission checking.
Example,
How I want it to be stored in the database:
{ "admin": 1,
"create_posts": 1,
"edit_posts": 1,
"delete_posts": 1 }
How it is being stored now:
{"0":"\"admin\": 1",
"1":"\"create_posts\": 1",
"2":"\"edit_posts\": 1",
"3":"\"delete_posts\": 1"}
My code:
$check_list = $_POST['check_list'];
$list = array();
foreach($check_list as $key) {
$key = '"' . $key .= '": 1';
array_push($list, $key);
}
$json = json_encode($list, JSON_FORCE_OBJECT);
How would I make it so that it stores in the database like I want it to be?
I'm quite new to this, so any hints instead of direct answers is also much appreciated!
UPDATE:
JSON decode and validation:
$permis = json_decode($permissions->permissions, true);
echo ($permis['admin'] == true) ? 'allowed' : 'disallowed';
$arr = [ 'a', 'b', 'c' ];
echo json_encode(
array_combine(
$arr,
array_fill(0, count($arr), 1)
),
JSON_PRETTY_PRINT
);
Output:
{
"a": 1,
"b": 1,
"c": 1
}
http://us3.php.net/manual/en/function.array-combine.php
http://us3.php.net/manual/en/function.array-fill.php
I'm assuming the incoming data looks like this.
$incoming_data = "admin=1&create_posts=1&edit_posts=1&delete_posts=1";
$pairs = parse_str($incoming_data);
so we take the incoming pairs and use the $key as the array index so you don't get the extra array element index.
$permissions = array();
foreach($pairs as $key => $value){
$permissions[$key] = $value;
}
then we encode the new array to get the JSON you're looking for.
print json_encode($permissions);
will print out JSON like this:
{
"admin":"1",
"create_posts":"1",
"edit_posts":"1",
"delete_posts":"1"
}
The main thing to change in your code is this.
foreach($check_list as $key) {
$list[$key] = 1;
}
I know how to iterate an array in PHP, but I want to iterate an array from a specific key.
Assume that I have a huge array
$my_array = array(
...
...
["adad"] => "value X",
["yy"] => "value Y",
["hkghgk"] => "value Z",
["pp"] => "value ZZ",
...
...
)
I know the key where to start to iterate ("yy"). Now I want to iterate only from this key to another key.
I know that I don't want to do this:
$start_key = "yy";
foreach ($my_array as $key => $v)
{
if ($key == $start_key)
...
}
I was looking for Iterator, but I don't think this is what I need.
Try combining array_search, array_key, and LimitIterator. Using the example from the LimitIterator page and some extra bits:
$fruitsArray = array(
'a' => 'apple',
'b' => 'banana',
'c' => 'cherry',
'd' => 'damson',
'e' => 'elderberry'
);
$startkey = array_search('d', array_keys($fruitsArray));
$fruits = new ArrayIterator($fruitsArray);
foreach (new LimitIterator($fruits, $startkey) as $fruit) {
var_dump($fruit);
}
Starting at position 'd', this outputs:
string(6) "damson" string(10) "elderberry"
There is a limit to this approach in that it won’t loop around the array until the start position again. It will only iterate to the end of an array and then stop. You would have to run another foreach to do the first part of the array, but that can be easily done with the code we already have.
foreach (new LimitIterator($fruits, 0, $startkey-1) as $fruit) {
var_dump($fruit);
}
This starts from the first element, up to the element before the one we searched for.
foreach always resets the array's array pointer. You just can't do that the way you imagine.
You still have a few ways. The foreach way is just skipping everything until you found the key once:
$start_key = "yy";
$started = false;
foreach ($my_array as $key => $v)
{
if ($key == $start_key) {
$started = true;
}
if (!$started) {
continue;
}
// your code
}
You could as well work with the array pointer and use the while (list($key, $v) = each($array)) method:
$start_key = "yy";
reset($array); // reset it to be sure to start at the beginning
while (list($key, $v) = each($array) && $key != $start_key); // set array pointer to $start_key
do {
// your code
} while (list($key, $v) = each($array));
Alternatively, you can just extract the array you want to iterate over like MarkBaker proposed.
Perhaps something like:
foreach(array_slice(
$my_array,
array_search(
$start_key,array_keys($my_array)
),
null,
true) as $key => $v) {}
Demo
You can use array_keys and array_search.
Like this:
$keys = array_keys( $my_array ); // store all of your array indexes in a new array
$position = array_search( "yy" ,$keys ); // search your starting index in the newly created array of indexes
if( $position == false ) exit( "Index doesn't exist" ); // if the starting index doesn't exist the array_search returns false
for( $i = $position; $i < count( $keys ); $i++ ) { // starting from your desired index, this will iterate over the rest of your array
// do your stuff to $my_array[ $keys[ $i ] ] like:
echo $my_array[ $keys[ $i ] ];
}
Try it like this:
$startkey = array_search('yy', array_keys($my_array));
$endkey = array_search('zz', array_keys($my_array));
$my_array2 = array_values($my_array);
for($i = $startkey; $i<=$endkey; $i++)
{
// Access array like this
echo $my_array2[$i];
}
If this pull request makes it through, you will be able to do this quite easily:
if (seek($array, 'yy', SEEK_KEY)) {
while ($data = each($array)) {
// Do stuff
}
}
I got stuck somehow on the following problem:
What I want to achieve is to merge the following arrays based on key :
{"Entities":{"submenu_id":"Parents","submenu_label":"parents"}}
{"Entities":{"submenu_id":"Insurers","submenu_label":"insurers"}}
{"Users":{"submenu_id":"New roles","submenu_label":"newrole"}}
{"Users":{"submenu_id":"User - roles","submenu_label":"user_roles"}}
{"Users":{"submenu_id":"Roles - permissions","submenu_label":"roles_permissions"}}
{"Accounting":{"submenu_id":"Input accounting data","submenu_label":"new_accounting"}}
Which needs to output like this:
[{"item_header":"Entities"},
{"list_items" :
[{"submenu_id":"Parents","submenu_label":"parents"},
{"submenu_id":"Insurers","submenu_label":"insurers"}]
}]
[{"item_header":"Users"},
{"list_items" :
[{"submenu_id":"New roles","submenu_label":"newrole"}
{"submenu_id":"User - roles","submenu_label":"user_roles"}
{"submenu_id":"Roles - permissions","submenu_label":"roles_permissions"}]
}]
[{"item_header":"Accounting"},
{"list_items" :
[{"submenu_id":"Input accounting data","submenu_label":"new_accounting"}]
}]
I have been trying all kinds of things for the last two hours, but each attempt returned a different format as the one required and thus failed miserably. Somehow, I couldn't figure it out.
Do you have a construction in mind to get this job done?
I would be very interested to hear your approach on the matter.
Thanks.
$input = array(
'{"Entities":{"submenu_id":"Parents","submenu_label":"parents"}}',
'{"Entities":{"submenu_id":"Insurers","submenu_label":"insurers"}}',
'{"Users":{"submenu_id":"New roles","submenu_label":"newrole"}}',
'{"Users":{"submenu_id":"User - roles","submenu_label":"user_roles"}}',
'{"Users":{"submenu_id":"Roles - permissions","submenu_label":"roles_permissions"}}',
'{"Accounting":{"submenu_id":"Input accounting data","submenu_label":"new_accounting"}}',
);
$input = array_map(function ($e) { return json_decode($e, true); }, $input);
$result = array();
$indexMap = array();
foreach ($input as $index => $values) {
foreach ($values as $k => $value) {
$index = isset($indexMap[$k]) ? $indexMap[$k] : $index;
if (!isset($result[$index]['item_header'])) {
$result[$index]['item_header'] = $k;
$indexMap[$k] = $index;
}
$result[$index]['list_items'][] = $value;
}
}
echo json_encode($result);
Here you are!
In this case, first I added all arrays into one array for processing.
I thought they are in same array first, but now I realize they aren't.
Just make an empty $array=[] then and then add them all in $array[]=$a1, $array[]=$a2, etc...
$array = '[{"Entities":{"submenu_id":"Parents","submenu_label":"parents"}},
{"Entities":{"submenu_id":"Insurers","submenu_label":"insurers"}},
{"Users":{"submenu_id":"New roles","submenu_label":"newrole"}},
{"Users":{"submenu_id":"User - roles","submenu_label":"user_roles"}},
{"Users":{"submenu_id":"Roles - permissions","submenu_label":"roles_permissions"}},
{"Accounting":{"submenu_id":"Input accounting data","submenu_label":"new_accounting"}}]';
$array = json_decode($array, true);
$intermediate = []; // 1st step
foreach($array as $a)
{
$keys = array_keys($a);
$key = $keys[0]; // say, "Entities" or "Users"
$intermediate[$key] []= $a[$key];
}
$result = []; // 2nd step
foreach($intermediate as $key=>$a)
{
$entry = ["item_header" => $key, "list_items" => [] ];
foreach($a as $item) $entry["list_items"] []= $item;
$result []= $entry;
}
print_r($result);
I would prefer an OO approach for that.
First an object for the list_item:
{"submenu_id":"Parents","submenu_label":"parents"}
Second an object for the item_header:
{"item_header":"Entities", "list_items" : <array of list_item> }
Last an object or an array for all:
{ "Menus: <array of item_header> }
And the according getter/setter etc.
The following code will give you the requisite array over which you can iterate to get the desired output.
$final_array = array();
foreach($array as $value) { //assuming that the original arrays are stored inside another array. You can replace the iterator over the array to an iterator over input from file
$key = /*Extract the key from the string ($value)*/
$existing_array_for_key = $final_array[$key];
if(!array_key_exists ($key , $final_array)) {
$existing_array_for_key = array();
}
$existing_array_for_key[count($existing_array_for_key)+1] = /*Extract value from the String ($value)*/
$final_array[$key] = $existing_array_for_key;
}