在PHP数组

Question

我是PHP函数的新手。我认为可以使用函数解决以下问题。在这里，我能够将html表单数据存储在数据库中，该数据库使用以下代码从ajax传递。但我有点困惑，如果条件实施的地方。如果已提交数据，我想停止数据复制。

我正在使用的PHP代码

if(isset($_POST["section_name"])){
 $section_name = $_POST["section_name"];
 $class_id = $_POST["class_id"];

 for($count = 0; $count<count($section_name); $count++)
 {
     $query =$con->prepare('INSERT INTO section(class_id, section_name) VALUES (:class_id, :section_name)');
     $query->bindParam(':class_id', $class_id);
     $query->bindParam(':section_name', $section_name[$count]);
     $query->execute();
     echo "Section has been assigned";
     }   

     }

现在，我希望将以上代码包含在其他条件中。

 $query =$con->query('SELECT * FROM section');
    while($row=$query->fetch(PDO::FETCH_ASSOC)){
    if(($_POST["class_id"]==$row["class_id"])&&($_POST["section_name"]==$row["section_name"])){
        echo "Section has already assigned in this class ";

    }
    else{
        // insert...
    }
    }

当我尝试合并代码时，我无法处理。请帮帮我

Answer 1

你几乎拥有所有东西，你只需要将它包装在这样的函数中：

function insert() {
    if(isset($_POST["section_name"])){
        $section_name = $_POST["section_name"];
        $class_id = $_POST["class_id"];

        for($count = 0; $count<count($section_name); $count++)
        {
            $query =$con->prepare('INSERT INTO section(class_id, section_name) VALUES (:class_id, :section_name)');
            $query->bindParam(':class_id', $class_id);
            $query->bindParam(':section_name', $section_name[$count]);
            $query->execute();
            echo "Section has been assigned";
        }   

    }
}

然后你这样称呼它：

$query =$con->query('SELECT * FROM section');
while($row=$query->fetch(PDO::FETCH_ASSOC)){
if(($_POST["class_id"]==$row["class_id"])&&($_POST["section_name"]==$row["section_name"])){
    echo "Section has already assigned in this class ";

}
else{
    insert();
}
}