I have the following method:
$results = array_filter($arr['people'], function($people) use ($searchId) {
return in_array($searchId, $people['member']);
});
echo json_encode($results);
This returnes an array like this:
[{"id":"8080","content":"foo","member":[123,456],"interval":7}]
But if there more than one result it will return this:
["0": {"id":"8080","content":"foo","member":[123,456],"interval":7}]
["5": {"id":"8082","content":"bar","member":[1234,3456],"interval":5}]
I want to replace the "automatically" given ID with the ID which is in the Array - like this:
["8080": {"id":"8080","content":"foo","member":[123,456],"interval":7}]
["8082": {"id":"8082","content":"bar","member":[1234,3456],"interval":5}]
Have somebody an idea?
Try this one,
$arr = [
0 => [
"id" => 8082,
"content" => "test",
"interval" => "7",
],
5 => [
"id" => 8086,
"content" => "test",
"interval" => "7",
],
];
$ids = array_column($arr, "id");
$result = array_combine($ids, $arr);
print_r($result);
echo json_encode($result);
array_column which states Return the values from a single column in the input array.
array_combine which states Creates an array by using one array for keys and another for its values.
Try this simple way :
$arr[$newkey] = $arr[$oldkey];
unset($arr[$oldkey]);
Related
I'm learning OOP and I whould create a list of objects in an array, but my code return the last array
I have search here, but haven't found a solution or idea how to do this.
Excepct
"MerchantDefinedFields":[
{
"Id":2,
"Value":"email#test.com"
},
{
"Id":4,
"Value":"Web"
},
{
"Id":9,
"Value":"NAO"
},
{
"Id":83,
"Value":"Field"
},
{
"Id":84,
"Value":"Only"
}
]
My code
$MDDs = array(
array("Id" => 2, "Value" => "email#test.com"),
array("Id" => 4, "Value" => "Web"),
array("Id" => 9, "Value" => "NO"),
array("Id" => 83, "Value" => "Field"),
array("Id" => 84, "Value" => "Only")
);
foreach($MDDs as $MDD){
$abac = array("Id" => $MDD['Id'], "Value" => $MDD['Value']);
}
Result
Array
(
[Id] => 84
[Value] => PROPRIO
)
Your foreach() is re-setting $abac every time it goes through the loop. So on the last time it runs, it will set the variable to the last item in your array.
Instead of setting the variable each time, try adding the key->value to an array (or something like that, depending on what you want):
$abac = [];
foreach($MDDs as $MDD){
$abac[] = array("Id" => $MDD['Id'], "Value" => $MDD['Value']);
}
It's hard to create the exact right answer for you, since it's unclear what you're trying to accomplish, but this should at least point you in the right direction.
For simple answer :- You don't need foreach loop to get the desired result
you can simply use built-in php function to convert your array to JSON
$abac = json_encode ( $MDDs);
Now coming to your problem :-
you are re-assigning the $abac variable in loop instead of adding values to it like .
$abac = [];
foreach($MDDs as $MDD){
$abac[] = array("Id" => $MDD['Id'], "Value" => $MDD['Value']);
}
The best way to do it is to declare the $abac outside of the foreach and then use the array_push method like this:
$abac = array();
foreach($MDDs as $MDD)
{
array_push($abac, array("Id" => $MDD['Id'], "Value" => $MDD['Value']));
}
print_r($abac);
I want to modify a value inside JSON. Let's say I have this example JSON and I want to have the php change the phone number:
$data = '{
"firstName": "John",
"lastName": "Smith",
"age": 27,
"phoneNumbers": [
{
"type": "home",
"number": "212 555-1234"
}
]
}'
It sounds like I have to convert to an array using json decode:
$data = json_decode($data,true);
Which gives me this:
array (
'firstName' => 'John',
'lastName' => 'Smith',
'age' => 27,
'phoneNumbers' =>
array (
0 =>
array (
'type' => 'home',
'number' => '212 555-1234',
),
),
)
How do I then insert my own variable value into the array please? From my googling it looks like I might be on the right path with something along these lines:
$number = '50';
$data[$key]['age'] = $number;
What it does though, is just add it onto the end of the array, instead of correcting the value in place of the array file.
Firstly, you need to convert your json to PHP array usign json_decode function. check below code for updating/inserting keys:
$data['age'] = $number; // to update age
$data['newkey'] = 'newvalue'; //it will add key as sibling of firstname, last name and further
$data['phoneNumbers'][0]['number'] = '222 5555 4444'; //it will change value from 212 555-1234 to 222 5555 4444.
You just need to consider array format. If key exists then you can update value else it will be new key in array. Hope it helps you.
I got the following array:
"task" : {
"author_id" : 150,
"created_at" : somedate,
"status_id" : 2,
"assignee_id" : 100,
"updated_at" : somedate_too
and I got 2 more associative arrays where I store names for IDs in the following way:
"100" => Mike,
"150" => Bob //etc..., the same for statuses
I need to check for the IDs in the first array and replace numbers with names for the corresponding arrays in the most effective way. I tried the following:
if(isset(task['status_id'])){$row = array_merge($row, [$status_ids[
task['status_id']]]);}else{$row = array_merge($row, '');}
if(isset(task['author_id'])){row = array_merge($row, [$users[// note the different array here
task['author_id']]]);}else{$row = array_merge($row, '');}
if(isset(task['assignee_id'])){$row = array_merge($row, [$users[
task['assignee_id']]]);}else{$row = array_merge($row, '');}
In my resulting array ($row) I cannot miss the index and replace it with another value. If there is no value in the first array, I need to insert an empty string to get the following, for example:
['in progress', '', 'Mike']
if there is no author_id in the first array. I believe there should be a better way to do it with foreach loop, but I cant find out how because for different fields I get the data from different arrays. I dont think a separate if clause for every field is the most suitable here.
Any help would be welcome. Thank You.
You could map your special keys to their array counterparts using references and use that mapping when populating $row, like this:
$users = [
"100" => "Mike",
"150" => "Bob",
];
$status_ids = [
1 => "Foo",
2 => "Bar",
];
// Define output format and array mapping
$mapping = [
"author_id" => &$users, // Mapped to $users array
"created_at" => null, // Not mapped, keep $task value
"status_id" => &$status_ids,
"assignee_id" => &$users,
"updated_at" => null,
];
$task = [
"author_id" => 150,
"created_at" => "Some date",
"status_id" => 2,
// "assignee_id" => 99999, // Oops, missing key/value => empty string in $row
"updated_at" => "Some other date",
];
foreach ($mapping as $key => $mappedArray) {
#$row[] = $mappedArray
? $mappedArray[$task[$key]] ?: ''
: $task[$key];
}
print_r($row);
Output:
Array
(
[0] => Bob
[1] => Some date
[2] => Bar
[3] =>
[4] => Some other date
)
It should work (I didn't try it, but it should give you the general idea):
<?php
$fields = array("author_id", "assignee_id", "status_id");
$aliases = array("users", "users", "status_ids");
foreach ($task as $key=>&$value) {
$alias = str_replace($fields, $aliases, ${$key});
if (is_array(${$alias}) {
$value = array_key_exists($value, ${$alias}) ? ${$alias}[$value] : "";
}
}
unset($value);
And then you can fill up your $row as you planned, directly from the $task array.
Up until now I have just used PHP's json_encode() on simple rows of data, for example
{
"name":"bob",
"age":"22"
}
However I have the need to return JSON which has arrays.
Example output is
{
"success":true,
"payload":
{
"venuedata":
{
"id":"1",
"name":"venue name"
},
"menus": [
{"menuid":"1","menuname":"food","items": [{"item":"pizza","cost":"$12.50"},{"item":"burger","cost":"$14.50"}]},
{"menuid":"2","menuname":"drinks","items": [{"item":"pint of beer","cost":"$5.50"}]}
]
}
}
Now, the venuedata object will come from one PDO query, and the menus will come from another query and the items for each menu will come from another query.
How can I use json_encode to return the example JSON?
A generalized example assuming the menu items and the menus are connected to each other with a foreign key.
Create an array of menus and add for every menu element in the array the menu items.
$arrMenus = array();
$menus = getMenusFromDB();
foreach($menus as $menu) {
$menuItems = getMenuItemsFromDB($menu["id"]);
$arrMenuItems = array();
foreach($menuItems as $menuItem){
$arrMenuItems []= array(
"item" => $menuItem["item"],
"cost" => $menuItem["cost"]
);
}
$arrMenus []= array(
"menuid" => $menu["id"],
"menuname" => $menu["menuname"],
"items" => $arrMenuItems
);
}
Then create an array with the rest of the information and add the "menus" array as part of the "payload" array:
$obj = array(
"success" => true,
"payload" => array(
"venuedata" => array(
"id" => "2",
"name" => "venue name"
),
"menus" => $arrMenus
)
)
After convert the array via json_encode():
$json = json_encode($obj);
I'm storing images links into the database separating them with ,, but I want to transform this string into an array, but I'm not sure how to do it.
So my array looks like this:
$array = array(
"name" => "Daniel",
"urls" => "http:/localhost/img/first.png,http://localhost/img/second.png"
);
So I'd like to have it in the following form:
$array2 = array(
"name" => "Daniel",
"urls" => array("http:/localhost/img/first.png",
"http://localhost/img/second.png" )
);
I haven't been PHP'ing for a while, but for that simple use-case I would use explode.
$array['urls'] = explode(',', $array['urls']);
Uncertain if I interpreted your question correct though?
You can use array_walk_recursive like in the following example.
function url(&$v,$k)
{
if($k=='urls') {
$v = explode(",",$v);
}
}
$array = array(
"name" => "Daniel",
"urls" => "http:/localhost/img/first.png,http://localhost/img/second.png"
);
array_walk_recursive($array,"url");
You can check the output on PHP Sandbox