javascript - PHP - 显示特殊字符

Question

允许用户输入的片段

//fetch user input and pass it in URL
alertify.prompt("Please enter note/remarks for this Form (optional):", function (e,value) {
    if (e) {
               alertify.success("Form has been submitted");
               $.post(SITE_URL+"someController/someAction",$("#frm_submit").serialize()+ "&user_id="+user_id+"&comment="+value, function( data ) {
           });

    }else{
       alertify.error("Your Form is not submitted");
    }
});

用户输入:我的项目 Google R&D，面向每个 Google 员工

当表单发布时，输入不完整，如下所示

echo $_POST['comment'] 打印 My Project Google R

这里，如果用户在注释中输入特殊字符，例如 & ，则会中断输入

尝试使用 htmlentities($_POST['comment']) 和 htmlspecialchars($_POST['comment'], ENT_QUOTES, 'UTF-8') 但不行工作。

如何允许用户输入特殊字符？

P.S:我没有将此值保存在数据库中

Answer 1

正如 Daan 建议的那样，& 破坏了 javascript 中的 URL。请找到对我有用的更新片段

//fetch user input and pass it in URL
alertify.prompt("Please enter note/remarks for this Form (optional):", function (e,value) {
    if (e) {

               alertify.success("Form has been submitted");

               //encodes special characters in user comment
               var comment = encodeURIComponent(value);

               $.post(SITE_URL+"someController/someAction",$("#frm_submit").serialize()+ "&user_id="+user_id+"&comment="+comment, function( data ) {
           });

    }else{
       alertify.error("Your Form is not submitted");
    }
});