比較PHP

Question

數組元素我想比較數組元素還判定是否0或1。我想選擇我的is_answer_accepted由該函數返回is_answer_accepted($aid)

if($is_answer_accepted['is_answer_accepted'] === 0) { 
    delete_all_answer_as_solved($_GET['question']); 
    mark_question_as_solved($_GET['answer'], $_GET['question']); 
} 

if($is_answer_accepted['is_answer_accepted'] === 1) { //Debugger message: $is_answer_accepted: {is_answer_accepted => 0}[1] 
    delete_answer_as_solved($_GET['answer'], $_GET['question']); 
} 

我點擊一個非接受的答案（已確認），因此我is_answer_accepted應爲0。不知怎的，我比較失敗，$is_answer_accepted['is_answer_accepted'] = 1將返回即使壽是真的肯定是0

function is_answer_accepted($aid) { 
    global $conn; 
    $query=$conn->prepare("SELECT is_answer_accepted FROM is_answer_accepted(:aid)"); 
    $query->execute(array($aid)); 


    return $query->fetch(); 
} 

當我做這個查詢我返回1，如果solved_date != NULL和否則爲0。

CREATE OR REPLACE FUNCTION is_answer_accepted(aid INT) 
    returns INTEGER 
LANGUAGE plpgsql 
AS $$ 
DECLARE date_solved TIMESTAMP; 
    DECLARE answer_accepted INTEGER; 
BEGIN 
    SELECT solved_date FROM answers WHERE answers.publicationid = aid 
    INTO date_solved; 

    IF date_solved is null THEN 
    answer_accepted := 0; 
    ELSE 
    answer_accepted :=1; 
    END IF; 

    return answer_accepted; 
END 
$$; 

的迴應是：

is_answer_accepted 
------------------ 
       0 
(1 row) 

任何想法比較是怎麼錯了？

親切的問候

Answer 1

if($is_answer_accepted['is_answer_accepted'] == 0) { 
    delete_all_answer_as_solved($_GET['question']); 
    mark_question_as_solved($_GET['answer'], $_GET['question']); 
} 

if($is_answer_accepted['is_answer_accepted'] == 1) { //Debugger message: $is_answer_accepted: {is_answer_accepted => 0}[1] 
    delete_answer_as_solved($_GET['answer'], $_GET['question']); 
} 

你的if語句包括分配不comparssion