PHP Array doesn't show all database items - php

Question

I fixed now my PHP file and finally I have an output of my array. But the problem is, that I have three entry of textes in my database, but my array only shows two of them.
Function.php
public function listQuestion(){
$result = mysql_query("SELECT text FROM `questions`");
if(!$result)
{
echo "Database query failed: " . mysql_error();
}
$temp_array = array();
while ($row = mysql_fetch_array($result)) {
$temp_array[] = $row;
}
return $temp_array;
}
Index.php
else if ($tag == "question"){
// Request type is question
// list questions
$question = $db->listQuestion();
if ($question != false) {
// questions found
// echo json with success = 1
$response["success"] = 1;
$response["question"] = $question;
// $userlog = array();
// $userlog["question"]["text"] = $question["text"];
// array_push($response["question"], $userlog);
echo json_encode($response);
//echo json_encode(array("question"=>$question));
} else {
// questions not found
// echo json with error = 1
$response["error"] = 1;
$response["error_msg"] = "Questions were not found!";
echo json_encode($response);
}
}
The output
{"tag":"question","success":1,"error":0,"question":
[{"0":"Ich lese gerne technische Zeitschriften.","text":"Ich lese gerne technische Zeitschriften."},
{"0":"Ich habe Angst im Dunkeln.","text":"Ich habe Angst im Dunkeln."},
{"0":null,"text":null}]} -> here should be 'Manchmal fühle ich mich hungrig.'
Any suggestions?
Roman