Question

我需要帮助转换几个数组：

转换为单个JSON：

    <?php

$message="";
$f="";
$mail_sent="";
if(isset($_POST['submit']))
{
    $headers = "MIME-Version: 1.0" . "\r\n";
    $headers .= "Content-type:text/html;charset=iso-8859-1" . "\r\n";
    $headers .= "From:".$_POST['email']."\r\n";


    $recipient="iam@myweb.com";


    $subject = "CONTACT MAIL LETTER\n";
    $message .= "<span style='font-family: verdana; font-size: 12px;'>Dear Sir, <br>&nbsp;&nbsp;&nbsp;&nbsp;"."<br> Contact Us details are displayed below <br><br>";   

    $message.='<tr><td><b><u>CONTACT US DETAILS</u></b></td><td></td><td></td></tr>';

    $message.="<BR><BR><b>FIRST NAME:</b> ".$_POST['fname'].  "<BR><BR>";

    $message.="<BR><BR><b>LAST NAME:</b> ".$_POST['lname'].  "<BR><BR>"; 

     $message.="<b>E-MAIL ADDRESS:</b> ".$_POST['email'].  "<BR><BR>";

     $message.="<b>SUBJECT:</b> ".$_POST['subject'].  "<BR><BR>";   

     $message.="<b>MESSAGE:</b> ".$_POST['message'].  "<BR><BR><BR><BR><BR><BR><BR>";

     $message .= "Thanks,<BR>".$_POST['fname']. "</span>";
     //echo $message;


    $mail_sent = @mail($recipient,$subject,$message,$headers);
    if($mail_sent)
    {
    $f=1 ;
    }
    else
    {
    $f=0;
    }
    }

<?php 

if(isset($_POST['submit']))
{

if($f==1)
         {
            echo "Your Mail has been sent Successfully.";
          }
       else
       {
        echo "Your Mail has not been sent Successfully.";
       }
}
?>

这是否可以使用递归？我似乎无法让它正常工作，所以我想知道在JS中是否已经有一种简单的方法可以做到这一点。

Answer 1

var struct = {};
var paths = [
    ['a', 'b', 'c'],
    ['d', 'e', 'f'],
    ['d', 'g', 'h']
];

paths.forEach(function (path) {
    var ref;
    ref = struct;
    path.forEach(function (elem, index) {
        if (!ref[elem]) {
            ref[elem] = index === path.length - 1 ? "done": {};
        }
        ref = ref[elem];
    });
});
console.log(JSON.stringify(struct, null, "\t"));

输出：

{
    "a": {
        "b": {
            "c": "done"
        }
    },
    "d": {
        "e": {
            "f": "done"
        },
        "g": {
            "h": "done"
        }
    }
}

注意：如果输入如下，则此脚本将失败：

var paths = [
    ['a', 'b', 'c'],
    ['a', 'b', 'c', 'd' ]
];

它决定c应该是"done"但是还有另一个级别。也许这不会发生，如果确实如此，找出你想要的结果。

Answer 2

包含Array#forEach()和Array#reduce()

的版本

var x = ['a', 'b', 'c'],
    y = ['d', 'e', 'f'],
    z = ['d', 'g', 'h'],
    object = function (array) {
        var o = {};
        array.forEach(function (a) {
            var last = a.pop();
            a.reduce(function (r, b) {
                r[b] = r[b] || {};
                return r[b];
            }, o)[last] = 'done';
        });
        return o;
    }([x, y, z]);

document.write('<pre>' + JSON.stringify(object, 0, 4) + '</pre>');

将多个数组转换为单个JSON

2 个答案: