build json data from php object - php

Question

I want to buld a Json object to feed my graphs. I have got the following code to change my PHP object.
$rows = $this->Website_model->getGraphData();
$_rows = array();
$i = 0;
foreach ($rows as $key => $row) {
foreach ($row as $column => $value) {
$_rows[$i][] = $value;
}
$i++;
}
$rows = $_rows;
echo json_encode(array("sEcho" => intval($sEcho), "data" => $rows));
die();
My current ouput looks like this:
array(24) {
[0]=>
array(3) {
[0]=>
string(7) "3283581"
[1]=>
string(10) "2013-10-16"
}
It should look something like this:
{"y":15,"x":"2012-11-19"},{"y":18,"x":"2012-11-19"} etc etc
How can I add the Y and X to my data and take care i will get the right output to feed my graph?
/////////////////////////////////////////////////////
I tried the following:
Now i'm using the following code:
$rows = $this->Website_model->getGraphDataPositives();
$_rows = array();
$i = 0;
foreach ($rows as $key => $row) {
foreach ($row as $column => $value) {
$_rows[$i]['x'] = $value;
$_rows[$i]['y'] = $value;
$i++;
}
}
This results in the following response:
array(48) {
[0]=>
array(2) {
["x"]=>
string(7) "3283581"
["y"]=>
string(7) "3283581"
}
[1]=>
array(2) {
["x"]=>
string(10) "2013-10-16"
["y"]=>
string(10) "2013-10-16"
}
So it isn't okay yet.. it should say:
array(48) {
[0]=>
array(2) {
["x"]=>
string(7) "3283581"
["y"]=>
string(7) "2013-10-16"
}
[1]=>
array(2) {
["x"]=>
string(10) "1512116"
["y"]=>
string(10) "2013-10-17"
}

Answer 1

This would create an array like you wish :
$rows = $this->Website_model->getGraphData();
$_rows = array();
$i = 0;
foreach ($rows as $key => $row) {
$_rows[$i]['y'] = $rows[0];
$_rows[$i]['x'] = $rows[1];
$i++;
}
Your example data is not correct. You have array(3), but you show only 2 elements. Also in the output data you have 3283581 and the y values are 15 and 18. So there is no way I can guess how to convert those values.