Question

所以我试图用PHP发送动态电子邮件。现在这就是我所拥有的

    $postString = '{
            "key": "xxx",
            "message": {
                    "html": "this is the emails html content",
                    "text": "this is the emails text content",
                    "subject": "this is the subject",
                    "from_email": "email@email.com",
                    "from_name": "Joe",
                    "to": [
                    {
                            "email": "Joe@ Joe",
                            "name": "Joe@ Joe"
                    }
                    ],

                    "attachments": [

                    ]
            },
            "async": false
    }';

现在我希望"html"成为一个变量。所以我做了这个

"html": $var,

可悲的是，这不起作用。不是{}或使用单引号。有任何想法吗？顺便说一句，它被拾取为一个字符串。

Answer 1

Variables are not interpolated in strings delimited by single quotes。有几种方法可以解决这个问题。以下示例使用concatenation。

$postString = '{
        "key": "xxx",
        "html": "' . $var . '",
        "message": {
                "html": "this is the emails html content",
                "text": "this is the emails text content",
                "subject": "this is the subject",
                "from_email": "email@email.com",
                "from_name": "Joe",
                "to": [
                {
                        "email": "Joe@ Joe",
                        "name": "Joe@ Joe"
                }
                ],

                "attachments": [

                ]
        },
        "async": false
}';

老实说，如果您只使用数组然后使用json_encode()将其编码为JSON，这将会容易得多。

Answer 2

正如我的评论中提到的，这会更好用

$post = [
    'key' => 'xxx',
    'message' => [
        'html' => $var,
        'text' => 'this is the emails text content',
        'subject' => 'this is the subject',
        'from_email' => 'email@email.com',
        'to' => [
            ['email' => 'Joe@ Joe', 'name' => 'Joe@ Joe']
        ],
        'attachments' => []
    ],
    'async' => false
];

$postString = json_encode($post);

强制遗留PHP注意事项：如果您坚持使用低于5.4的PHP版本，您显然无法使用简写数组表示法。如果是这种情况，请将[]替换为array()。

无法在字符串中设置变量

2 个答案: