I'm using JSON_encode to send data to a js file for tracks. A user could have one or several tracks so that's where the problem lies. Not sure how to organise my array to allow for several arrays. I can't use an array within an array since all the JSON data needs to be separated preferably so there will be something like;
track1 {ID:110232....}
track2 {ID:21402....}
What I have now works fine if there is just one track.
$ID = $_GET['ID'];
$result = mysql_query("SELECT * FROM tracks WHERE ID = '$ID' ORDER BY timestamp DESC");
while($row = mysql_fetch_array($result)){
$T_ID = $row['T_ID'];
$T_url = $row['url'];
$T_name = $row['name'];
$T_timestamp = $row['timestamp'];
$arr = array('T_ID' => $ID,'T_name' => $T_name, 'T_url' => $T_url, 'T_timestamp' => $T_timestamp );
echo json_encode($arr);
}
Why can't you use an (associative) array inside an container array like this:
$cont = array();
while($row = mysql_fetch_array($result)){
$T_ID = $row['T_ID'];
$T_url = $row['url'];
$T_name = $row['name'];
$T_timestamp = $row['timestamp'];
$arr = array('T_ID' => $ID,'T_name' => $T_name, 'T_url' => $T_url, 'T_timestamp' => $T_timestamp );
$cont[] = $arr;
}
echo json_encode($cont);
This results in a JSON structure like this, which keeps all your tracks in separate objects:
[
{'T_ID': 1, 'T_name': 1, ... },
{'T_ID': 2, 'T_name': 2, ... },
{'T_ID': 3, 'T_name': 3, ... },
...
]
As noted in the comments you should switch to PDO or mysqli- functions, but this doesn't matter for the problem at hand..
Related
I have two table that has multiple rows. I want to combine those two tables rows into one long array which will be identified as one array
I wrote this code
$posts_sql = $db->query("SELECT * FROM posts WHERE id < $lastpost AND position = submitter order by id DESC LIMIT 5");
$posts_all = $db->fetch_all($posts_sql);
foreach($posts_all as $key => $posts_row){
$users_sql = $db->query("SELECT username,firstname,lastname,avatar FROM users WHERE username = '".$posts_row['submitter']."'");
$users_all = $db->fetch_assoc($users_sql);
$data[] = $posts_row;
$data[] = $users_all;
}
echo json_encode($data);
It makes duplicate arrays doesn't right...
That's how my result show
[{
"id":"39",
"hash":"070fcc8e73ba5f549f87",
"post":"hello\n",
"files":"",
"location":",
"GB","status":"1",
"position":"dabblos",
"submitter":"dabblos",
"source":"text",
"ip":"37.130.227.133",
"stamp":"1390197699"
},
{
"username":"dabblos",
"firstname":"dabb",
"lastname":"los",
"avatar":"no_avatar.png"
}]
please help me make it just one long array
I would like to see the output looks like this
{
"id":"39",
"hash":"070fcc8e73ba5f549f87",
"post":"hello\n",
"files":"",
"location":",
"GB","status":"1",
"position":"dabblos",
"submitter":"dabblos",
"source":"text",
"ip":"37.130.227.133",
"stamp":"1390197699"
"username":"dabblos",
"firstname":"dabb",
"lastname":"los",
"avatar":"no_avatar.png"
}
look at this,i have taken example values, it is working fine as you wanted
$arr=array(array("abc"=>"1","def"=>"2"),array("abcc"=>"11","deff"=>"22"));
echo json_encode($arr);
$final = array();
foreach($arr as $item) {
$final = array_merge($final, $item);
}
print_r($final);
output
[{"abc":"1","def":"2"},{"abcc":"11","deff":"22"}]//json_array
Array ( [abc] => 1 [def] => 2 [abcc] => 11 [deff] => 22 )//final array
UPDATE
json_encode the final array and you'll get the desired result
echo json_encode($final);
output
{"abc":"1","def":"2","abcc":"11","deff":"22"}
Untested:
$posts_sql = $db->query("SELECT * FROM posts WHERE id < $lastpost AND position = submitter order by id DESC LIMIT 5");
$posts_all = $db->fetch_all($posts_sql);
foreach($posts_all as $key => $posts_row) {
$users_sql = $db->query("SELECT username,firstname,lastname,avatar FROM users WHERE username = '".$posts_row['submitter']."'");
$users_all = $db->fetch_assoc($users_sql);
$data[] = $posts_row;
foreach($users_all as $user)
$data[] = $user;
}
}
echo json_encode($data);
// when you use json_decode use the 'true' flag as in
// $decodedJson = json_decode($json, true);
Merge them before you json_encode them:
$data[] = $posts_row;
$data2[] = $users_all;
$result = array_merge($data,$data2);
echo json_encode($result);
I'm trying to put data from my database into seperate arrays within another array. This works but when I'm trying to fetch the 'user_id' information, it only shows one number so it works like a string. How can I get it to work like an array and get the entire user_id?
$fetch = mysqli_query($con, "SELECT * FROM spotify_userdata");
$return_arr = [];
while ($row = mysqli_fetch_array($fetch, MYSQL_ASSOC)) {
$return_arr[] = array(
$row_array['user_id'] = $row['user_id'],
$row_array['name'] = $row['name'],
$row_array['artists'] = $row['artists'],
);
}
$user = json_encode($return_arr[0]);
echo $user[2];
This code returns 1 so it show the third number of the user_id. How can I get it to show the entire user_id like this: 111434343
You have many things in your code that's wrong:
Remove the last array item's comma
Change
$return_arr = [];
To
$return_arr = array();
3.Add:
$row_array = array()
at the begginning of all that code
At the end your code must be like this:
$fetch = mysqli_query($con, "SELECT * FROM spotify_userdata");
$row_array = array();
while ($row = mysqli_fetch_array($fetch, MYSQL_ASSOC)) {
$return_arr = array(
$row_array['user_id'] = $row['user_id'],
$row_array['name'] = $row['name'],
$row_array['artists'] = $row['artists'],
);
}
$user = json_encode($return_arr[0]);
According to your code you should use:
echo $user['user_id'];
But the real problem is - where is $row_array initialized?!?
And even bigger problem - why use "=" inside array creation in the while ... it seems to me that "=>" would fit better, don't you think?
$thearray = array
(
//(0)ID, (1)NAME, (2)LOCATION, (3)PHONE
array("0","Name 1","Nowhere 11","0004444"),
array("1","Name 2","Everywhere 11","0005555"),
array("2","Name 3","ThisPlace 11","0002222"),
array("3","Name 4","NoPlace 11","0003333"),
array("4","Name 5","ThatPlace 11","0001111")
);
This is how I used to store my information
I would then run through them to find what I needed
and display them using for example
echo $thearray[$i][4]
I want to do the same thing except store that information in Mysql
This is how far I've gotten but I keep getting strange errors and I cant output from the array
This is how far I've gotten
$result = $db->query("SELECT * FROM table");
$thearray = array();
while($thearray = $result->fetch_assoc()){
$thearray[] = $thearray;
}
For some reason this isn't working for me, its like it isnt in a 2d array like I have above :S I can't simply echo it like I did before.
Well first of all
while($thearray = $result->fetch_assoc()){
$thearray[] = $thearray;
}
Will keep overwriting the array and get very confused
try
while($row = $result->fetch_assoc()){
$thearray[] = $row;
}
The array returned from your query is no longer a simple array, it is a associative array
i.e. it will look something like this:
$new_array = array
(
//(0)ID, (1)NAME, (2)LOCATION, (3)PHONE
array('ID' => "0", 'NAME' => "Name 1", 'LOCATION' => "Nowhere 11", 'PHONE' => "0004444"),
array('ID' => "1", 'NAME' => "Name 2", 'LOCATION' => "Nowhere 22", 'PHONE' => "0005555"),
etc
);
So now when you want to use it you will have to use this sort of construct
$name = $new_array[$i]['NAME']
$location = $new_array[$i]['LOCATION']
etc
or
<?php echo $new_array[$i]['NAME']; ?>
<?php echo $new_array[$i]['LOCATION'] ?>
etc
This is a problem that I come across frequently when using PHP to query mysql data, and I would like to know if there is a more efficient solution. When I only need two columns of data, for instance the columns 'id' and 'price', I prefer this 'flat' format:
array(
id 1 => price 1,
id 2 => price 2,
id 3 => price 3,
...
);
or in json:
[{"id 1":"price 1"},{"id 2":"price 2"},{"id 3":"price 3"}, ...]
And my usual solution is to loop twice, like so:
require_once('server/connection.php');
$info = mysql_query("SELECT id, price FROM table");
$array1 = array();
while ($row = mysql_fetch_assoc($info)) {
$array1[] = array(
'id' => $row['id'],
'price' => $row['price']
);
}
mysql_close($con);
$array2 = array();
foreach ($array1 as $key => $value) {
$array2[$key][$value['id']] = $value['price'];
}
print json_encode($array2);
which does work, but I think this code is too lengthy for its purpose, and there should be a better way -- so that I only have to loop one array. Any suggestions?
You can simplify your loop to this
while ($row = mysql_fetch_assoc($info)) {
$array1[] = array(
'id '.$row['id'] => 'price '.$row['price']
);
}
print json_encode($array1);
$result = array();
while ($row = mysql_fetch_assoc($info)) {
$result[$row['id']] = $row['price'];
}
print_r($result);
require_once('server/connection.php');
$info = mysql_query("SELECT id, price FROM table");
$array1 = array();
while ($row = mysql_fetch_assoc($info))
$array1[$row['id']] = $row['price'];
mysql_close($con);
print json_encode($array1);
NOTE: your $array2 is a two dimensional array. If it works for you, you need to change your javascript code to handle following flat format i.e. the above code produce
[{"id 1":"price 1"},{"id 2":"price 2"},{"id 3":"price 3"}, ...]
I've been working on a OOP method that is supposed to return the rows of a MySQL query. I have to have the data array in the format:
$rows = array('row'=> rownum, 'fld1'=> fldval .... 'fldn' => fldval);
What I have encountered are the two problems of either:
returns
$rows = array('0'=>fldval, 'fld1'=> fldval .... 'n'=> fldval, 'fldn' => fldval);
or single row of
$rows = array('fld1'=> fldval .... 'fldn' => fldval);
Little frustrated as every PHP mysql function I have tried has some sort to goofy crap flaw and will not do a straight out process.
I assume there is a good example somewhere, that can get me past the crap limitations, but haven't found anything useful yet!
I've tried all of the following:
$row = mysql_result($db_res,$n);
$row = mysql_fetch_array($db_res);
$row = mysql_fetch_assoc($db_res);
$row = mysql_fetch_object($db_res);
$row = mysql_fetch_row($db_res);
None have worked successfully! For getting out the bogus "numeric" array entries. I wrote:
foreach ($row as $k => $v)
if (is_numeric($k)) { continue; }
$result[$k] = $v;
} // end foreach $row
$row = array_push($row, 'row'=>$rownum, $result);
Hoping someone has a link.
$list = array();
$query = "SELECT value FROM table";
$resource = mysql_query($query);
while($row = mysql_fetch_assoc($resource))
{
$list['fld' . (1 + count($list))] = $row['value'];
}
$list = array('row' => count($list)) + $list;
if table have 3 row, the code above is going to give you a array like:
array(
'row' => 3,
'fld1' => 12,
'fld2' => 34,
'fld3' => 56
);