php - 正则表达式提取 2 个大括号之间的字符串

Question

我有以下短代码:

Dear {{name}},

You are being invited for the following event: {{event}}

regards, {{author}}

我有一个来自数据库的数组:$数据

哪里:

$data['name'] = 'John Doe';
$data['event'] = 'Party yay!';
$data['author'] = 'Kehke Lunga';

我期望的输出:

Dear John Doe,

You are being invited for the following event: Party yay!

regards, Kehke Lunga

此外，我还想执行像 {{firstname||lastname}} 这样的操作，它应该检查是否设置了键 $data['firstname']，如果不是，则应使用 $data['lastname']。不过，那是为了后期。

现在，我只想知道如何匹配两个大括号之间的文本。

谢谢

Answer 1

与 preg_match_all() :

$pattern = '~\{\{(.*?)\}\}~';
preg_match_all($pattern, $string, $matches);
var_dump($matches[1]);