I have two array structures. I want to delete all array items in both array except one item in both array. I have written my codes below. How can I do that?
$array_one = array(
'image-one' => 'image-one.jpg',
'image-two' => 'image-two.jpg',
'image-three' => 'image-three.jpg',
'image-four' => 'image-four.jpg',
'image-five' => 'image-five.jpg',
'image-six' => 'image-six.jpg',
'image-seven' => 'image-seven.jpg',
);
$array_two = array(
'image-one' => 'image-one.jpg',
'image-two' => 'image-two.jpg',
'image-three' => 'image-three.jpg',
'image-four' => 'image-four.jpg',
);
I want to delete image-one.jpg,image-two.jpg,image-three.jpg in both arrays except image-four.jpg,image-five.jpg,image-six.jpg,image-seven.jpg.
Using unset:
unset($array['image-one']);
unset($array['image-two']);
unset($array['image-three']);
You can also create loop.
$todelete = array('image-one', 'image-two', 'image-three');
foreach($todelete as $del){
unset($array[$del]);
}
If you want to delete by value:
$todelete = array('image-one.jpg', 'image-two.jpg', 'image-three.jpg');
foreach($todelete as $del){
if(($key = array_search($del, $array)) !== false) {
unset($array[$key]);
}
}
You can use unset() :
unset($array_one['image-one']);
unset($array_one['image-two']);
unset($array_one['image-three']);
Related
I have a string stored in WordPress MySQL database Meta field as serialized string of array of arrays like this:
a:4:{i:0;a:8:{s:19:"ab-variation-letter";s:1:"B";s:18:"ab-variation-title";s:6:"bbbbbb";s:28:"ab-variation-wysiwyg-editor-";s:12:"bbbbbbbbbbbb";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:1;a:8:{s:19:"ab-variation-letter";s:1:"C";s:18:"ab-variation-title";s:5:"ccccc";s:28:"ab-variation-wysiwyg-editor-";s:17:"ccccccccccccccccc";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:2;a:8:{s:19:"ab-variation-letter";s:1:"D";s:18:"ab-variation-title";s:8:"dddddddd";s:28:"ab-variation-wysiwyg-editor-";s:1:"d";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:3;a:8:{s:19:"ab-variation-letter";s:1:"E";s:18:"ab-variation-title";s:8:"eeeeeeee";s:28:"ab-variation-wysiwyg-editor-";s:30:"eeeeeee eeeeeeeeeeeee eeeeeeee";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}}
When I unserialize that string above it looks like this below...
array (
0 =>
array (
'ab-variation-letter' => 'B',
'ab-variation-title' => 'bbbbbb',
'ab-variation-wysiwyg-editor-' => 'bbbbbbbbbbbb',
'ab-variation-conversion-count' => '',
'ab-variation-views' => '',
'ab-variation-start-date' => '',
'ab-variation-end-date' => '',
'ab-variation-winner' => '',
),
1 =>
array (
'ab-variation-letter' => 'C',
'ab-variation-title' => 'ccccc',
'ab-variation-wysiwyg-editor-' => 'ccccccccccccccccc',
'ab-variation-conversion-count' => '',
'ab-variation-views' => '',
'ab-variation-start-date' => '',
'ab-variation-end-date' => '',
'ab-variation-winner' => '',
),
2 =>
array (
'ab-variation-letter' => 'D',
'ab-variation-title' => 'dddddddd',
'ab-variation-wysiwyg-editor-' => 'd',
'ab-variation-conversion-count' => '',
'ab-variation-views' => '',
'ab-variation-start-date' => '',
'ab-variation-end-date' => '',
'ab-variation-winner' => '',
),
3 =>
array (
'ab-variation-letter' => 'E',
'ab-variation-title' => 'eeeeeeee',
'ab-variation-wysiwyg-editor-' => 'eeeeeee eeeeeeeeeeeee eeeeeeee',
'ab-variation-conversion-count' => '',
'ab-variation-views' => '',
'ab-variation-start-date' => '',
'ab-variation-end-date' => '',
'ab-variation-winner' => '',
),
)
based on this array of arrays above. I want to be able to search for the array that has ab-variation-letter' => 'C' and then be able to update any of the other array key values on that matching array. When done I will need to re-serialize back into a string so I can save it back to the Database table again.
I want to build this PHP function below to be able to take my serialized string of array of arrays and search those arrays for an array that has a key/value matching the passed in $array_key string and then update another keyvalue in that same array and then reserialize the whole thing again.
function updateAbTestMetaData($post_id, $meta_key, $meta_value, $array_key, $new_value){
//get serialized meta from DB
$serialized_meta_data_string = 'a:4:{i:0;a:8:{s:19:"ab-variation-letter";s:1:"B";s:18:"ab-variation-title";s:6:"bbbbbb";s:28:"ab-variation-wysiwyg-editor-";s:12:"bbbbbbbbbbbb";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:1;a:8:{s:19:"ab-variation-letter";s:1:"C";s:18:"ab-variation-title";s:5:"ccccc";s:28:"ab-variation-wysiwyg-editor-";s:17:"ccccccccccccccccc";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:2;a:8:{s:19:"ab-variation-letter";s:1:"D";s:18:"ab-variation-title";s:8:"dddddddd";s:28:"ab-variation-wysiwyg-editor-";s:1:"d";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:3;a:8:{s:19:"ab-variation-letter";s:1:"E";s:18:"ab-variation-title";s:8:"eeeeeeee";s:28:"ab-variation-wysiwyg-editor-";s:30:"eeeeeee eeeeeeeeeeeee eeeeeeee";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}}';
//un-serialize meta data string
$meta_data_arrays = unserialize($serialized_meta_data_string);
// search array of arrays $meta_data_arrays for array that has a key == $array_key // 'ab-variation-letter' === 'D'
// update the value of any other key on that matching array
// re-serialize all the data with the updated data
}
The end result should allow me to find the array with key 'ab-variation-letter' === 'C' and update the key/value in that matching array with key 'ab-variation-title' and update its current value from 'ccccc' to 'new value' and then re-serialize the whole entire array of arrays back into the original string with only the updated array data updated/
Perhaps throwing together a recursive function that can make use of calling itself could come in handy:
function replaceArrayKeyValue(array &$arr, $whereKey, $whereValue, $replacement) {
$matched = false;
$keys = array_keys($arr);
for ($i = 0; $i < count($keys); $i++)
{
$key = $keys[$i];
if (is_string($arr[$key])) {
if ($key === $whereKey && $arr[$key] === $whereValue) {
if (is_array($replacement)) {
$arr = array_replace_recursive($arr, $replacement);
} else {
$arr[$key] = $replacement;
}
$matched = $key;
break;
}
} else if (is_array($arr[$key])) {
$m = replaceArrayKeyValue($arr[$key], $whereKey, $whereValue, $replacement);
if ($m !== false) {
$matched = $key.'.'.$m;
break;
}
}
unset($key);
}
unset($keys);
return $matched;
}
With the above function, you pass through the source array ($arr), the key you're looking for ($whereKey), the value that it should match ($whereValue) and the replacement value ($replacement).
If $replacement is an array, I've got a array_replace_recursive in place to perform a recursive replacement, allowing you to pass in the changes you'd like to make to the array. For example, in your case:
$data = unserialize(...);
$matchedKey = replaceArrayKeyValue($data, 'ab-variation-letter', 'C', [
'ab-variation-title' => 'My New Title'
]);
$serialized = serialize($data);
You could replace this with array_recursive if you're not wanting the changes to occur further down any nested child arrays.
When using this function, the $data array is modified directly. The result of the function is a joint string of the key path to that value, in this case:
echo $matchedKey; // Result: 1.ab-variation-letter
If you echo print_r($data, true), you get the intended result:
Array (
[0] => Array( ... )
[1] => Array
(
[ab-variation-letter] => C
[ab-variation-title] => My New Title
[ab-variation-wysiwyg-editor-] => ccccccccccccccccc
[ab-variation-conversion-count] =>
[ab-variation-views] =>
[ab-variation-start-date] =>
[ab-variation-end-date] =>
[ab-variation-winner] =>
)
[2] => Array( ... )
[3] => Array( ... )
)
I got it working after some playing around with this code below. Open to other versions as well thanks
$serialized_meta_data_string = 'a:4:{i:0;a:8:{s:19:"ab-variation-letter";s:1:"B";s:18:"ab-variation-title";s:6:"bbbbbb";s:28:"ab-variation-wysiwyg-editor-";s:12:"bbbbbbbbbbbb";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:1;a:8:{s:19:"ab-variation-letter";s:1:"C";s:18:"ab-variation-title";s:5:"ccccc";s:28:"ab-variation-wysiwyg-editor-";s:17:"ccccccccccccccccc";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:2;a:8:{s:19:"ab-variation-letter";s:1:"D";s:18:"ab-variation-title";s:8:"dddddddd";s:28:"ab-variation-wysiwyg-editor-";s:1:"d";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}i:3;a:8:{s:19:"ab-variation-letter";s:1:"E";s:18:"ab-variation-title";s:8:"eeeeeeee";s:28:"ab-variation-wysiwyg-editor-";s:30:"eeeeeee eeeeeeeeeeeee eeeeeeee";s:29:"ab-variation-conversion-count";s:0:"";s:18:"ab-variation-views";s:0:"";s:23:"ab-variation-start-date";s:0:"";s:21:"ab-variation-end-date";s:0:"";s:19:"ab-variation-winner";s:0:"";}}';
$update_on_key = 'ab-variation-title';
$ab_version = 'C';
$new_value = 'new variation title on variation C';
$new_data = updateMetaArrayData($serialized_meta_data_string, $update_on_key, $ab_version, $new_value);
echo '<pre>';
echo $new_data;
function updateMetaArrayData($serialized_meta_data_string, $update_on_key, $ab_version, $new_value){
$new_meta_data_arrays = array();
//un-serialize meta data string
$meta_data_arrays = unserialize($serialized_meta_data_string);
foreach($meta_data_arrays as $key => $value){
$new_meta_data_arrays[$key] = $value;
if(isset($value['ab-variation-letter']) && $value['ab-variation-letter'] == $ab_version){
$new_meta_data_arrays[$key][$update_on_key] = $new_value;
}
}
echo '<pre>';
print_r($new_meta_data_arrays);
$new_serialized_meta = serialize($new_meta_data_arrays);
return $new_serialized_meta;
}
I have array multidimensional code like this:
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$eaten = 'grape';
unset($array[$eaten]);
and what i need is to delete 'grape' from the array because 'grape' already eaten. how to fix my code to unset the 'grape'?
and my question number two, if it can be unset, is there a way to unset multi value like
unset($array,['grape','orange']);
thanks for help..
You can remove eaten element by following way. Use array_search() you can find key at the position of your eaten element.
Here below code shows that in any multidimensional array you can call given function.
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$eaten = 'grape';
$array = removeElement($array, $eaten);
function removeElement($data_arr, $eaten)
{
foreach($data_arr as $k => $single)
{
if (count($single) != count($single, COUNT_RECURSIVE))
{
$data_arr[$k] = removeElement($single, $eaten);
}
else
{
if(($key = array_search($eaten, $single)) !== false)
{
unset($data_arr[$k][$key]);
}
}
}
return $data_arr;
}
P.S. Please note that you can unset() multiple elements in single call. But the way you are using unset is wrong.
Instead of using unset() i suggest you to create a new Array after removal of required value benefit is that, your original array will remain same, you can use it further:
Example:
// your array
$yourArr = array(
'fruits'=>array('apple','orange','grape', 'pineaple'),
'vegetables'=>array('tomato', 'potato')
);
// remove array that you need
$removeArr = array('grape','tomato');
$newArr = array();
foreach ($yourArr as $key => $value) {
foreach ($value as $finalVal) {
if(!in_array($finalVal, $removeArr)){ // check if available in removal array
$newArr[$key][] = $finalVal;
}
}
}
echo "<pre>";
print_r($newArr);
Result:
Array
(
[fruits] => Array
(
[0] => apple
[1] => orange
[2] => pineaple
)
[vegetables] => Array
(
[0] => potato
)
)
Explanation:
Using this array array('grape','tomato'); which will remove the value that you define in this array.
This is how I would do it.
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$unset_item = 'grape';
$array = array_map(function($items) use ($unset_item) {
$found = array_search($unset_item, $items);
if($found){
unset($items[$found]);
}
return $items;
}, $array);
I would like to build a multidimensional array from an array. For example I would like
$test = array (
0 => 'Tree',
1 => 'Trunk',
2 => 'Branch',
3 => 'Limb',
4 => 'Apple',
5 => 'Seed'
);
to become
$test =
array (
'Tree' => array (
'Trunk' => array (
'Branch' => array (
'Limb' => array (
'Apple' => array (
'Seed' => array ()
)
)
)
)
)
);
or more simply
$result[Tree][Trunk][Branch][Limb][Apple][Seed] = null;
I'm trying to do this with a recursive function but i'm hitting memory limit so I'm clearly doing it wrong.
<?php
$test = array (
0 => 'Tree',
1 => 'Trunk',
2 => 'Branch',
3 => 'Limb',
4 => 'Apple',
5 => 'Seed'
);
print_r($test);
print "results of function";
print_r(buildArray($test));
function buildArray (&$array, &$build = null)
{
if (count($array) > 0)
{
//create an array, pass the array to itself removing the first value
$temp = array_values($array);
unset ($temp[0]);
$build[$array[0]] = $temp;
buildArray($build,$temp);
return $build;
}
return $build;
}
Here's an approach with foreach and without recursion, which works:
function buildArray($array)
{
$new = array();
$current = &$new;
foreach($array as $key => $value)
{
$current[$value] = array();
$current = &$current[$value];
}
return $new;
}
[ Demo ]
Now your function... first, using $build[$array[0]] without defining it as an array first produces an E_NOTICE.
Second, your function is going into infinite recursion because you are not actually modifying $array ($temp isn't the same), so count($array) > 0 will be true for all of eternity.
And even if you were modifying $array, you couldn't use $array[0] anymore, because you unset that, and the indices don't just slide up. You would need array_shift for that.
After that, you pass $build and $temp to your function, which results in further because you now you assign $build to $temp, therefore creating another loop in your already-infinitely-recurring loop.
I was trying to fix all of the above in your code, but eventually realized that my code was now pretty much exactly the one from Pevara's answer, just with different variable names, so... that's that.
This function works recursively and does the trick:
function buildArray($from, $to = []) {
if (empty($from)) { return null; }
$to[array_shift($from)] = buildArray($from, $to);
return $to;
}
In your code I would expect you see an error. You are talking to $build in your first iteration as if it where an array, while you have defaulted it to null.
It seems to be easy
$res = array();
$i = count($test);
while ($i)
$res = array($test[--$i] => $res);
var_export($res);
return
array ( 'Tree' => array ( 'Trunk' => array ( 'Branch' => array ( 'Limb' => array ( 'Apple' => array ( 'Seed' => array ( ), ), ), ), ), ), )
Using a pointer, keep re-pointing it deeper. Your two output examples gave array() and null for the deepest value; this gives array() but if you want null, replace $p[$value] = array(); with $p[$value] = $test ? array() : null;
$test = array(
'Tree',
'Trunk',
'Branch',
'Limb',
'Apple',
'Seed'
);
$output = array();
$p = &$output;
while ($test) {
$value = array_shift($test);
$p[$value] = array();
$p = &$p[$value];
}
print_r($output);
I am trying to delete an array whereby one of its values..(time) meet a specific condition. \The code I'm currently working with looks like this:
foreach($_SESSION as $key) {
foreach($key['time'] as $keys=>$value){
if(condition){
unset($key);
}
}
}
The array looks like this.
Array
(
[form1] => Array
(
[hash] => lFfKBKiCTG6vOQDa8c7n
[time] => 1401067044
)
[form5] => Array
(
[hash] => TTmLVODDEkI1NrRnAbfB
[time] => 1401063352
)
[form4] => Array
(
[hash] => XCVOvrGbhuqAZehBmwoD
[time] => 1401063352
)
I tried to adapt solutions from these pages but didn't work.
Remove element in multidimensional array and save
PHP - unset in a multidimensional array
PHP How to Unset Member of Multidimensional Array?
If you want to unset the values inside it, a simple single foreach will suffice. Consider this example:
$values = array(
'form1' => array('hash' => 'lFfKBKiCTG6vOQDa8c7n', 'time' => 1401067044),
'form5' => array('hash' => 'TTmLVODDEkI1NrRnAbfB', 'time' => 1401063352),
'form4' => array('hash' => 'XCVOvrGbhuqAZehBmwoD', 'time' => 1401063352),
);
$needle = 1401067044;
foreach($values as $key => &$value) {
if($value['time'] == $needle) {
// if you want to remove this key pair use this
unset($values[$key]['time']);
// if you just want to remove the value inside it
$value['time'] = null;
// if you want to remove all of this entirely
unset($values[$key]);
}
}
Fiddle
Unsetting in a for loop can lead to issues, its easier and better to use array_filter which is optimized for this kind of problem. Here is how to do it with your example. ideone running code
<?php
$ar = Array(
"form1" => Array
(
"hash" => 'lFfKBKiCTG6vOQDa8c7n',
"time" => '1401067044'
),
"form5" => Array
(
"hash" => 'TTmLVODDEkI1NrRnAbfB',
"time" => '1401063352'
),
"form4" => Array
(
"hash" => 'XCVOvrGbhuqAZehBmwoD',
"time" => '1401063352'
)
);
$condition = '1401067044';
$newArray = array_filter($ar, function($form) use ($condition) {
if (!isset($form['time'])) {
return true;
}
return $form['time'] != $condition;
});
var_export($newArray);
array_filter
Assuming your values are stored in $_SESSION
foreach($_SESSION as $key => $value) {
if(isset($value['time']) && $value['time'] < 1401063352) {
unset($_SESSION[$key]);
}
}
If you are storing your values in $_SESSION you may want to consider storing them in a subfield like $_SESSION['myForms'] so if you need to add other values to your session you can easily access only the values you need.
You need to do
unset($_SESSION[$key])
However as mentioned by Victory, array_filter is probably a better approach to this.
This is the code I have:
$orders = Array();
foreach ($unassigned as $uorder) {
$array = Array(
"ordid" => $uorder->idord,
"fecha" => $uorder->datorod,
"cliente" => $uorder->idcli
);
array_push($orders[$uorder->user_id], $array);
}
print_r($orders);
Which results:
Array (
[vendor1] =>
[vendor2] =>
)
I want to make some kind of sort
So I could use $orders[vendor1][0][ordid] to find the first order that the vendor made.
You have to assign $orders[$uorder->user_id] as an array first, otherwise it doesn't make sense to push an item onto it. Additionally, you can use the shorthand append notation:
if(!isset($orders[$uorder->user_id]))
$orders[$uorder->user_id] = array();
$orders[$uorder->user_id][] = $array;
In your foreach loop check if $orders[$uorder->user_id] is an array, if not create one.
foreach($unassigned as $uorder):
if(! is_array($orders[$uorder->user_id]))
$orders[$uorder->user_id] = array();
array_push($orders[$uorder->user_id],Array("ordid" => $uorder->idord, "fecha" => $uorder->datorod, "cliente" => $uorder->idcli));
endforeach;