I'm trying to access multiple values in multiple foreach loops outside of the loops:
foreach(array1 as arr1) {
$var1 = arr2['value1']; //$array is associative array with mutliple keys value1
}
Then I have another
foreach(array2 as arr2) {
$var2 = arr2['value']; //$array2 is another associative array with multiple keys value
}
All of this is within another big foreach loop and now I want to create an array within the big foreach with $var1 and $var2 being used. This array I'm going to be creating is going to be an associative array as well. Any ideas how I can do this?
Array 1:
Array
(
[0] => Array
(
[id] => 1
[id_name] => 251452
[name] => bob
)
[1] => Array
(
[id] => 2
[id_name] => 251453
[name] => bob
)
)
Array 2:
Array
(
[0] => Array
(
[id_person] => 4
[id_last_name] => 251452
[last_name] => smith
)
[1] => Array
(
[id_person] => 15
[id_last_name] => 251453
[last_name] => johnson
)
)
Assume these come from two different queries from the database.
I want to get the first name from the first array for each one and get the last name from the second array for each one and make one array that has this data along with others.
Have a look into multi dimensional arrays.
Also have a look at stdclass and maybe creating an array of these which can store many variables within a single definition - which can help in many ways. (standard class)
Nested looping - this would just dump all sub arrays into an object
// Object and array examples for an InnerArray
$Object = new stdclass();
$AllOfIt = array();
$cnt = 0;
foreach($OuterArray as $OuterKey => $InnerArray)
{
$cnt++;
foreach($InnerArray as $InnerKey => $InnerValue)
{
$Object->$cnt = $InnerValue;
$AllOfIt[$cnt] = $InnerValue;
}
}
Related
I am working with php and arrays, I have multiple arrays like following
Array
(
[0] => Array
(
[wallet_address] => 0x127e61982701axxxxxxxxxxxxxxxxxxxxxxxxxxx
)
[1] => Array
(
[wallet_address] => 0xf80a41eE97e3xxxxxxxxxxxxxxxxxxxxxxxxxxxx
)
[2] => Array
(
[wallet_address] => 0x24361F1602bxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
)
and so on....
And i want to make them in single array with comma like following way
$set = array("0x127e61982701axxxxxxxxxxxxxxxxxxxxxxxxxxx","0xf80a41eE97e3xxxxxxxxxxxxxxxxxxxxxxxxxxxx","0x24361F1602bxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
How can i do this ?Here is my current code but not working,showing me same result(0,1,2 keys),Where i am wrong ?
$GetUserFollower; //contaning multiple array value
$set=array();
foreach($GetUserFollower as $arr)
{
$set[]=$arr;
}
echo "<pre>";print_R($set);
The original array is an Assoc array and therefore the wallet_address needs to be addressed specifically in a loop. Or you could use the array_column() builtin function to achieve the same thing.
$GetUserFollower; //contaning multiple array value
$set=array();
foreach($GetUserFollower as $arr)
{
$set[] = $arr['wallet_address'];
}
echo "<pre>";print_r($set);
Or
$new = array_column($GetUserFollower, 'wallet_address');
print_r($new);
RESULT
Array
(
[0] => 0x127e61982701axxxxxxxxxxxxxxxxxxxxxxxxxxx
[1] => 0xf80a41eE97e3xxxxxxxxxxxxxxxxxxxxxxxxxxxx
[2] => 0x24361F1602bxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
)
Your comments are making me think you want an array without a key, which is impossible. If you do this with the example you show in your comments
$set = array("0x127e61982701axxxxxxxxxxxxxxxxxxxxxxxxxxx","0xf80a41eE97e3xxxxxxxxxxxxxxxxxxxxxxxxxxxx","0x24361F1602bxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
print_r($set);
You will see
Array
(
[0] => 0x127e61982701axxxxxxxxxxxxxxxxxxxxxxxxxxx
[1] => 0xf80a41eE97e3xxxxxxxxxxxxxxxxxxxxxxxxxxxx
[2] => 0x24361F1602bxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
)
This question already has answers here:
Generate an associative array from an array of rows using one column as keys and another column as values
(3 answers)
Closed 7 months ago.
I have an array of array that looks like this:
Array
(
[0] => Array
(
[id] => I100
[name] => Mary
[gender] => F
)
[1] => Array
(
[id] => I101
[name] => John
[gender] => M
)
[2] => Array
(
[id] => I245
[name] => Sarah
[gender] => F
)
)
I want to set the key of the parent array with the value of id, so the result array looks like this:
Array
(
[I100] => Array
(
[id] => I100
[name] => Mary
[gender] => F
)
[I101] => Array
(
[id] => I101
[name] => John
[gender] => M
)
[I245] => Array
(
[id] => I245
[name] => Sarah
[gender] => F
)
)
If possible I'd like to avoid using an additional loop to go through the array and creating a new array to store each item with the proper key, as the array can have thousands of items.
Thanks in advanced!
Despite your caveat, a loop is the obvious solution:
$newArray = [];
foreach($oldArray as $item)
$newArray[$item['id']] = $item;
If the problem you have is not specifically with a loop, but rather creating a copy of the array is causes excessive memory consumption, then you can edit the array in place, with a for loop:
for($i=0; $i<count($oldArray); $i++){
$oldArray[$oldArray[$i]['id']] = $oldArray[$i];
unset($oldArray[$i]);
}
Note this works because the id elements are alphanumeric strings, if they where simple integars then the above code could overwrite sections.
The only other solution is to build the correct array in the 1st place, in a similar manner.
For example, using PDO::fetch instead of PDO::fetchAll:
//$newArray = $sth->fetchAll(PDO::FETCH_ASSOC);
$newArray = [];
while($row = $sth->fetch(PDO::FETCH_ASSOC))
$newArray[$row['id']] = $row;
You can't overwrite keys while iterating through an array "on the fly". So here is solution with array_map which produces an array with needed structure:
// assuming $arr is your initial array
$result = [];
array_map(function($a) use (&$result){
$result[$a['id']] = $a;
}, $arr);
// $result contains the needed array
You can add needed key during creation of this array.
I'm using a form where the pair of inputs can be added per automatic. One store value in select and the other as input
After submit I receive the values in array and I need to associate them together. So all key values [0] belongs together and all [1] and so on.
Array
(
[issue] => Array
(
[0] => 2
[1] => 3
)
[qty] => Array
(
[0] => 1
[1] => 2
)
)
How can I do this using PHP?
Just use a simple foreach loop.
$combined = array();
foreach ($_POST["issue"] as $k=>$v) {
$combined[$k] = array($_POST["issue"][$k], $_POST["qty"][$k]);
}
print_r($combined);
Note, array_chunk is not my solution (It seems to me).
I have an array of about 150.000 elements
Array
(
[0] => Array
(
[name] => Danilo
[phone] => 33568
)
[1] => Array
(
[name] => Alessandro
[phone] => 392222
)
[2] => Array
(
[name] => Alex
[phone] => 3922
)
[3] => Array
(
[name] => Capa
[phone] => 392
)
)
And so on. I would split this array in several arrays, of (for example) 3.000 elements every one.
I saw array_chunk, but it returns a single array with several subarray.
I need several subarray to store them in a database and elaborate in future.
I'm getting crazy to write a snippet starting from that $temp and divide it into smaller array.
$size_chunks = 1;
$temp = array_chunk($recipients, $size_chunks);
foreach ($temp as $key=>$value)
{
if ($key<$size_chunks)
{
$to_store[] = $temp[$key];
}
//print_r($to_store);
// pseudo sql
// INSERT INTO table (sub_recipient) VALUES ($to_store);
$to_store = array();
}
So, every time that for loop end, reduce temp, store $to_store array and restart for others chunks.
Thank you very much.
PS in my example chunk==1 because starting array is small... ;)
With my example of chunk = 1, I need from starting array this 4 arrays:
Array
(
[0] => Array
(
[name] => Danilo
[phone] => 33568
)
)
Array
(
[0] => Array
(
[name] => Alessandro
[phone] => 39222
)
)
Array
(
[0] => Array
(
[name] => Alex
[phone] => 39222
)
)
Array
(
[0] => Array
(
[name] => Capa
[phone] => 392
)
)
Another explain
1 - With a starting array of 15.000 elements, and chunk of 3.000, I need in output (15.000 / 3.000) = 5 arrays. I will save them in database, so in DB I will have 5 rows (a row for every array).
2 - With a starting array of 4 elements, and chunk of 1, I need in output (4 / 1) = 4 arrays. I will save them in database, so in DB I will have 4 rows (a row for every array).
array_chunks() already does what you want, you just have to save it:
$chunks = array_chunk($array, $size_chunks);
foreach ($chunks as $chunk) {
// save $chunk to your database
}
$recipients = Array(
Array("fdbvfdb","dsacsdcds"),
Array("hrloo","dacdsc"),
Array("dcsdc","adcsd"),
Array("dcsdc","adcsd")
);
$total = count($recipients);//count 150.000 elements
$i=1;
for($i=0;$i<$total;$i++){
$O = array_slice($recipients,$i,1);
print_r($O);
//Your insert/Save code
}
you can use this code there is uses Array_Slice
In PHP, Codeigniter: my array, $phoneList, contains the following:
Array
(
[name] => One, Are
[telephonenumber] => 555.222.1111
)
Array
(
[name] => Two, Are
[telephonenumber] => 555.222.2222
)
Array
(
[name] => Three, Are
[telephonenumber] => 555.222.3333
)
How do I list each name out? Each number out? Am I right in saying my array contains three different Arrays? And is that normal, for an array to contain arrays?
When I do a print_r($phoneList), I get the following:
Array ( [0] => Array ( [name] => One, Are [telephonenumber] => 555.222.1111 ) [1] => Array ( [name] => Two, Are [telephonenumber] => 555.222.2222 ) [2] => Array ( [name] => Three, Are [telephonenumber] => 555.222.3333 ) )
You'll probably want to use foreach to loop through them. Something like this:
foreach($data as $arr) { // assuming $data is the variable that has all this in
echo $arr['name'].": ".$arr['telephonenumber']."<br />";
}
Here is the solution. Foreach is the easiest approach.
It's completely normal to have an array of arrays (in this case an array of associative arrays). They can be written like so:
$arrayofarray = array(array('name' => 'aname', 'phone'=>'22233344444'), array('name' => 'bobble', 'phone'=>'5552223333'));
print_r($arrayofarray);
and you should be able to print out the content in this way:
foreach ($arrayofarray as $arr){
print $arr['name']."\n";
print $arr['phone']."\n";
}
If you want to know what terms are set in each associative array you can use array_keys() to return them (as a simple array). For example:
foreach ($arrayofarray as $arr){
$setterms=array_keys($arr);
foreach ($setterms as $aterm){
print "$aterm -> ".$arr[$aterm]."\n";
}
}