插入If Ifse在Foreach數組PHP

Question

問題：當$ Current與所有$ subs不匹配時插入$ Current。

foreach ($array1 as $index=>$Current){ 
     foreach ($array2 as $key=>$subs){ 
      echo "\nCurrent: ".$Current; //get current 
      echo "\nsubs: ".$subs; //get subs 
      if ($Current== $subs){ 
       echo "\n++++++\n"; 
      } else{ 
       echo "\n=====\n"; 
       $sql = "INSERT INTO `#__table` (user_id, cat_id, subs) VALUES (".$userid.",".$other_array [$index].",".$Current.")"; 
       echo "\n".$sql; 
      } 
     } 

    } 

實際的輸出是：

Current: 1 
subs: 9 
===== 

INSERT INTO `#__table` (user_id, cat_id, subs) VALUES (1,1,1) 
Current: 1 
subs: 11 
===== 

INSERT INTO `#__table` (user_id, cat_id, subs) VALUES (1,1,1) 
Current: 1 
Subs: 1 
+++++ 

我預期的輸出應該比較當前後執行插入SQL和潛艇是不同的。這可能是這樣的：

Current: 1 
subs: 9 
===== 

Current: 1 
subs: 11 
===== 

Current: 1 
Subs: 1 
+++++ 

// EXECUTE THIS AFTER COMPARING ALL Current and subs *** 
INSERT INTO `#__table` (user_id, cat_id, subs) VALUES (1,1,Current) 

那麼我該如何編寫foreach循環？或者我不應該使用foreach？

請幫忙。謝謝。

Answer 1

如果我理解正確，您希望循環使用$ Current，並且$ subs中不存在$ Current，那麼您希望它插入到數據庫中。

嘗試使用in_array功能，像這樣：

foreach ($array1 as $index=>$Current){ 
    if (!in_array($Current, $array2)) 
     echo "\n=====\n"; 
     $sql = "INSERT INTO `#__table` (user_id, cat_id, subs) VALUES (".$userid.",".$other_array [$index].",".$Current.")"; 
     echo "\n".$sql; 
    } 
}