字符未正确保存在数据库中

Question

I am not sure if this is because of jquery, mysql or php

I have a basic AJAX call:

$(document).on("click", "#save-edit", function(){
    var id = $(this).closest("div.answer-section").attr("data-id");
    $.ajax({
        type: "post",
        data: {
            id: id,
            answer: $("#edit-box").val()
        },
        url: "/process/edit",
        dataType: "json",
        success: function(data){
            // display the data
        }
    });
});

and a basic SQL query:

$sql = $pdo->prepare("update answers set answer = :answer where answer_id = :aid");
$sql->bindParam("answer", $_POST["answer"], PDO::PARAM_STR);
$sql->bindParam("aid", $_POST["id"], PDO::PARAM_INT);
$sql->execute();

The problem I am having is, it saves characters like this: é é in the database as this é é then displays é é on the page, so what is causing this, the JQuery, or the MySQL or the PHP? How can I fix it?

Answer 1

好吧，我找到了答案，一切都很好，只需要将其添加到HTML标头即可：

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />