Friends,
I am creating a drupal form (its my second one yay!) and I am pulling from the database information about Coursework. a very simple coursework_id and a coursework_name.
Now the usual format to populate a drop down menu in Drupal is as follows:
$form['selected'] = array(
'#type' => 'select',
'#title' => t('Selected'),
'#options' => array(
0 => t('No'),
1 => t('Yes'),
),
'#default_value' => $category['selected'],
'#description' => t('Set this to <em>Yes</em> if you would like this category to be selected by default.'),
);
I am trying to pass up my coursework_id and coursework_name in the #options part of the select form described above.
So far I have come up with this line of code:
foreach ($results as $result) {
$courseworks = (array($result->coursework_id => $result->coursework_name));
}
This matches the required format of the Options but however I can only store one result:
Array
(
[2] => Java Programming
)
How could I be able to somehow push the new results. I have tried array_push from PHP but it does seem to work for this case, it can as far as I understand only append a value.
Kind regards,
-D
You should simply try :
foreach ($results as $result) {
$courseworks[$result->coursework_id] = $result->coursework_name;
}
Basically you are redefining $courseworks with every iteration of $results array.
Try this instead;
$courseworks = array();
foreach ($results as $result)
{
$courseworks[] = (array($result->coursework_id => $result->coursework_name));
}
The following should do it for you. You define the array first and then create keys and assign the relative value:
$courseworks = array();
foreach ($results as $result) {
$courseworks[$result->coursework_id] = $result->coursework_name;
}
Related
This is a simple question yet I'm unable to find an answer to this. I'm not looking for corrections to my code, simply education regarding this issue.
The array is defined before the first foreach begins so I can use it outside of the loop.
$arrayVar = array();
foreach ($variables as $key => $variable){
$arrayVar = array(
'name' => $squad['full_name'],
'position' => $squad['position']
);
}
This populates the array with data. However, when used in another loop, the array resets instead of appending to the end.
EDIT: John's answer resolves the issue. A simple inclusion of square brackets has saved me around 1000 lines.
You keep overwriting your array in every iteration instead of appending to it.
$arrayVar = array();
foreach ($variables as $key => $variable){
$arrayVar[] = array( // <= Add to array instead of overwriting it
'name' => $squad['full_name'],
'position' => $squad['position']
);
}
I am struggling with what would appear to be a pretty straight forward task. I have looked at and tried all kinds of functions and suggestion on SO hoping that maybe there is something simple and functional out there. Nothing I tried gives me the logic to do the restructuring.
I have a long complex array. However very much simplified the logic problem I am trying to solve generically is as follows:
$cost_type = Array
(
0 => "ISP2",
1 => "ISP3",
2 => "ISP4"
);
$supplier_name = Array
(
0 => "NAME-A",
1 => "NAME-B",
2 => "NAME-C"
);
$propertyid = Array
(
0 => "property1",
1 => "property2",
2 => "property2"
);
and I need to convert it to the following set of arrays (noting the concatenation of the two arrays with a common property id.....
$property1
(
array['charges']
[0] =>IPS2
array ['names']
[0] =>NAME-A
)
$property2
(
array['charges']
[0] ->IPS3
[1] =>IPS4
array['names']
[0] =>NAME-B
[1] =>NAME-c
)
I have tried everything over the course of the last few hours and a simple solution totally evades me.
If you can join the three arrays as you say in comments above this code will generate the look you want.
I loop through the array with property and keep key as the key to find names and charges in the other subarrays.
$cost_type = Array
(
0 => "ISP2",
1 => "ISP3",
2 => "ISP4"
);
$supplier_name =Array
(
0 => "NAME-A",
1 => "NAME-B",
2 => "NAME-C"
);
$propertyid = Array
(
0 => "property1",
1 => "property2",
2 => "property2"
);
$arr[] = $cost_type;
$arr[] = $supplier_name;
$arr[] = $propertyid;
$result = array();
Foreach($arr[2] as $key => $prop){
$result[$prop]["charges"][] =$arr[0][$key];
$result[$prop]["names"][] = $arr[1][$key];
}
Var_dump($result);
https://3v4l.org/EilvE
The following code converts the original array in the expected result:
$res = array();
foreach($arr[2] as $k => $foo){ // foreach property
if(!isset($res[$foo])){ // add property if not yet in list
$res[$foo] = array(
'charges' => array($arr[0][$k]),
'names' => array($arr[1][$k])
);
}else{ // add new value to already existing property
$res[$foo]['charges'][] = $arr[0][$k];
$res[$foo]['names'][] = $arr[1][$k];
}
}
Check it out here: https://eval.in/904473
Of course, it assumes a bunch on things about the data, but it should work for any number of items.
And if you need the property in another variable, just access it with $res['name of it].
Run this code you will get smiler result as you want :
$twodimantion=array();
$properties=array('property1','property2','property3');
$charges=array('ISP2','ISP3','ISP4');
$names=array('NAME-A','NAME-B','NAME-C');
foreach ($properties as $key => $property) {
$twodimantion['charge'][$key]=$charges[$key];
$twodimantion['names'][$key]=$names[$key];
$twoarray[$property]=$twodimantion;
}
echo '<pre>';
print_r($twoarray);
echo '</pre>';
I can't say I completely follow what you are trying to do, but I think this may be part of the way there for you.
When trying to restructure data in PHP, it's often helpful to create a empty array (or other data structure) to store the new data in first. Then you find a way to loop over your initial data structure that allows you to insert items into your reformatted structure in the right sequence.
<?php
$properties = []; // Array to hold final result
// Loop over your initial inputs
foreach ($groupsOfValues as $groupName => $groupValues) {
$temp = []; // Array to hold each groupings reformatted data
// Loop over the items in one of the inputs
for ($i=0; $i<count($group) && $i<count($properties)+1; $i++) {
if (!is_array($temp[$groupName])) {
$temp[$groupName] = [];
}
$temp[$groupName][] = $group[$i];
}
$properties[] = $temp;
}
I'm writing a php web application where I have a nested array which looks similar to the following:
$results = array(
array(
array(
'ID' => 1,
'Name' => 'Hi'
)
),
array(
array(
'ID' => 2,
'Name' => 'Hello'
)
),
array(
array(
'ID' => 3,
'Name' => 'Hey'
)
)
);
Currently this means that when I want to use the ID field I have to call $results[0][0]['ID'] which is rather inefficient and with an array of over several hundred records becomes messy quickly. I would like to shrink the array down so that I can call $results[0]['ID'] instead.
My understanding is that a function that uses a foreach loop to iterate through each row in the array and change the format would be the best way to go about changing the format of the $results array but I am struggling to understand what to do after the foreach loop has each initial array.
Here is the code I have so far:
public function filterArray($results) {
$outputArray = array();
foreach ($results as $key => $row) {
}
return $outputArray;
}
Would anyone be able to suggest the most effective way to achieve what I am after?
Thanks :)
Simply use call_user_func_array as
$array = call_user_func_array('array_merge', $results);
print_r($array);
Demo
Here is a sample request which works, but the names are hard coded
$client->batchDeleteAttributes(array(
'DomainName' => $domainName,
'Items' => array(
array('Name' => '5149572a86deb5161fbb22bdab',),
array('Name' => '5149572a86deb5161fbf7487b9',),
)
));
I can get the name values using the following loop
foreach($_POST['d'] as $key => $value)
{
}
I am confused how to integrate the foreach loop with the api request. I assume I need to create an array using the foreach loop and then use that array in the api request but I don't know the syntax.
Thanks!
Without knowing the format of your $_POST data it's hard to give a detailed solution, but something along these lines should get you heading in the right direction:
$names = array();
foreach ($_POST['d'] as $value)
{
$names[] = array('Name' => $value);
}
I have this multidimensional array which I'll name "original":
$original=
array
0 =>
array
'animal' => 'cats'
'quantity' => 1
1 =>
array
'animal' => 'dogs'
'quantity' => '1'
2 =>
array
'animal' => 'cats'
'quantity' => '3'
However, I want to merge internal arrays with the same animal to produce this new array (with quantities combined):
$new=
array
0 =>
array
'animal' => 'cats'
'quantity' => 4
1 =>
array
'animal' => 'dogs'
'quantity' => '1'
I understand that there are similar questions on stackoverflow, but not similar enough for me to be able to figure out how to use the feedback those questions have gotted to apply to this specific example. Yes, I know I probably look stupid to a lot of you, but please remember that there was a time when you too didn't know crap about working with arrays :)
I've tried the following code, but get Fatal error: Unsupported operand types (Referring to line 11). And if I got that error to go away, I'm not sure if this code would even produce what I'm trying to achieve.
$new = array();
foreach($original as $entity){
if(!isset($new[$entity["animal"]])){
$new[$entity["animal"]] = array(
"animal" => $entity["animal"],
"quantity" => 0,
);
}
$new[$entity["animal"]] += $entity["quantity"];
}
So, I don't know what I'm doing and I could really use some help from the experts.
To try to give a super clear question, here goes... What changes do I need to make to the code so that it will take $original and turn it into $new? If the code I provided is totally wrong, could you provide an alternative example that would do the trick? Also, the only language I am familiar with is PHP, so please provide an example using only PHP.
Thank you
You're very close.
$new[$entity["animal"]] += $entity["quantity"];
needs to be
$new[$entity["animal"]]['quantity'] += $entity["quantity"];
In your if ( !isset [...] ) line, you're setting $new[$entity['animal']] to an array, so you need to access the 'quantity' field of that array before trying to add the new quantity value to it.
One of the reasons why your code is not working is that you're using the animal name as the array index, not the integer index which is used in your desired output.
Try this:
$new = array(); // Desired output
$map = array(); // Map animal names to index in $new
$idx = 0; // What is the next index we can use
foreach ($original as $entity) {
$animal = $entity['animal'];
// If we haven't saved the animal yet, put it in the $map and $new array
if(!isset($map[$animal])) {
$map[$animal] = $idx++;
$new[$map[$animal]] = $entity;
}
else {
$new[$map[$animal]]['quantity'] += $entity['quantity'];
}
}
This works:
$new = array();
$seen = array();
foreach($original as $entity) {
// If this is the first time we're encountering the animal
if (!in_array($entity['animal'], $seen)) {
$new[] = $entity;
$seen[] = $entity['animal'];
// Otherwise, if this animal is already in the new array...
} else {
// Find the index of the animal in the new array...
foreach($new as $index => $new_entity) {
if ($new_entity['animal'] == $entity['animal']) {
// Add to the quantity
$new[$index]['quantity'] += $entity['quantity'];
}
}
}
}
Your example was using the animal name as the index, yet the actual index is just an integer.
However, I think the resulting array would be easier to use and easier to read if it was formatting like this instead:
array('cats' => 4, 'dogs' => 1)
That would require different but simpler code than above... but, it wouldn't be a direct response to your question.