PHP Arrays between 2 Functions - php

Question

i used an exsiting code from a tutorial and need to change it.
The original code doesnt use an array, but i need it.
In my index.php i am calling the function with a tag:
else if ($tag == 'getinvbykost') {
$kstalt = $_POST['kstalt'];
$get = $db->GetInvByKost($kstalt);
if ($get != false) {
// echo json with success = 1
$response["success"] = 1;
$response["ean"] = $get["ean"];
$response["name"] = $get["name"];
$response["betriebsdatenalt"] = $get["betriebsdatenalt"];
echo json_encode($response);
} else {
// user not found
// echo json with error = 1
$response["error"] = 1;
$response["error_msg"] = "nicht erfolgreich";
echo json_encode($response);
}
}
the function GetInvByKost($kstalt); is defined in DB_Functions.php.
the part is:
public function GetInvByKost($kstalt) {
$result = mysql_query("SELECT ean, name, betriebsdatenalt FROM geraete WHERE kstalt='$kstalt' AND accepted='0'") or die(mysql_error());
// check for result
$no_of_rows = mysql_num_rows($result);
if ($no_of_rows > 0) {
while ($result = mysql_fetch_assoc($result)){
}
return $result;
//echo $result[1];
}
else {
// user not found;
return false;
}
}
the problem is, the function GetInvByKost returns an array.
the part in the index.php
$response["success"] = 1;
$response["ean"] = $get["ean"];
$response["name"] = $get["name"];
$response["betriebsdatenalt"] = $get["betriebsdatenalt"];
isnt made for an array, only for a single line.
how do i can get the values in the array to build my output?

Answer 1

mysql_fetch_assoc($result) returns a flat array. This means you can't access returned array by a key. So $get["ean"] is wrong and $get[1] is correct. You can access result of mysql_fetch_assoc($result) only by index, not key. You have SELECT ean, name, betriebsdatenalt... in your query, so index of "ean" is equal to 0, "name" is equal to 1 and so on. Therefore, 3 parts of your code should be change in this way:
`$get["ean"]` => ` $get[0]`
`$get["name"]` => `$get[1]`
`$get["betriebsdatenalt"]` => `$get[2]`
Update:
So, the index.php file should be like this:
else if ($tag == 'getinvbykost') {
$response = array();
$kstalt = $_POST['kstalt'];
$get = $db->GetInvByKost($kstalt);
if ($get != false) {
// echo json with success = 1
$response["success"] = 1;
$response["ean"] = $get[0];
$response["name"] = $get[1];
$response["betriebsdatenalt"] = $get[2];
echo json_encode($response);
} else {
// user not found
// echo json with error = 1
$response["error"] = 1;
$response["error_msg"] = "nicht erfolgreich";
echo json_encode($response);
}
}