json解码/编码重复数组

Question

hey ive managed to decode the encode json i created but when i try to print the decoded array it repeats the same username ( the last one on the list ) over and over again. what i want is that all the users are desplayed

this is the code for the encoded json array

$query = 
  "SELECT 
  userid, 
  username, 
  password, 
  email 
  FROM Users ORDER BY userid";

$results = mysqli_query($connection,$query);

The encoded array code below

<?php
echo "Data with Json Encoding";
foreach($results as $row){

    $encode = json_encode($row, true);
    echo '<pre>';print_r($encode); echo '</pre>';
    }
 ?>

the decoded array code below

<?php
    echo "Data with Json Decoding";
    foreach($results as $row){
    $decode = json_decode($encode, true);
    echo '<pre>'; print_r($decode);'</pre>';
   }

this is the result of the code Data with Json Decoding

Array
(
    [userid] => 239
    [username] => desposit4221
    [password] => 699e5fae54df4c82314e42dd86c4d383
    [email] => ad471993@hotmail.com
) 

Array
(
    [userid] => 239
    [username] => desposit4221
    [password] => 699e5fae54df4c82314e42dd86c4d383
    [email] => ad471993@hotmail.com
)

it's this over and over again, it should be the list of my users

any help would be greatly appreciated

Answer 1

echo "Data with Json Encoding";
$encodedResults = array();
foreach($results as $row){

    $encode = json_encode($row, true);
    echo '<pre>';print_r($encode); echo '</pre>';

    $encodedResults[] = $encode;
}
 ?>

echo "Data with Json Decoding";
foreach($encodedResults as $row){
    $decode = json_decode($row, true);
    echo '<pre>'; print_r($decode);'</pre>';
}

Answer 2

If you put the line

$encode = json_encode($row, true);

into your second loop just after the foreach line, you should get the results you expect. It's a reasonable way to explore the datamanagement aspects of php. Good luck in your projects!

Answer 3

Encode your array:

echo "Data with Json Encoding";
$encoded_datas = json_encode($results);
echo $encoded_datas;

Decode the string into an array:

echo "Data with Json Decoding";
$decoded_datas = json_decode($encoded_datas, true);
echo '<pre>';
print_r($decoded_datas);
echo '</pre>';

You don't need to encode (and then decode) your array row by row. Plus, as explained in comments and as shown in costa 's answer, your code didn't work because you were decoding the same string each time: your $encoded variable contains the last value you put in it (the last row you encoded).