php isset或大於零的錯誤

Question

我有下面的代碼，我試圖添加或操作，但我得到一個錯誤。看不出有什麼可能是錯的。我想，如果它被設置爲獲取和大於0

foreach($av as $day => $a) { 
     if(isset($price[$ro['Room']['id']][$r['Rate']['id']][$day]) || $price[$ro['Room']['id']][$r['Rate']['id']][$day] > 0) { 
       $arr_total += $price[$ro['Room']['id']][$r['Rate']['id']][$day]; 
     } else { 
       $errors[] = "No Set Price for $day"; 
     } 
     // nice ! 
     if(isset($a[$ro['Room']['title']]) && $a[$ro['Room']['title']] < 1) { 
       $no_rooms = true; 
     } 
    } 

Answer 1

那麼我認爲你需要& &不||如果isset中的參數是「」，則認爲它是設置的。所以初始化值最初爲null或使用其他檢查

Answer 2

foreach($av as $day => $a) { 
     if(isset($price[$ro['Room']['id']][$r['Rate']['id']][$day]) && $price[$ro['Room']['id']][$r['Rate']['id']][$day] > 0) { 
       $arr_total += $price[$ro['Room']['id']][$r['Rate']['id']][$day]; 
     } else { 
       $errors[] = "No Set Price for $day"; 
     } 
     // nice ! 
     if(isset($a[$ro['Room']['title']]) && $a[$ro['Room']['title']] < 1) { 
       $no_rooms = true; 
     } 
    } 

嘗試