PHP preg_replace 带破折号和数字的电话号码

Question

我的数据库中有几个电话号码以特定的书写方式列出。
我想在每两个数字后有一个 space。我以为我会这样做：

$numbers = '06-12345678';
$regex = '/(\d{2})(\d{1})(\d{2})(\d{2})(\d{2})(\d{2})/';
$result = preg_replace($regex, '     ', $numbers);
echo $result;

但这行不通。它只是将所有数字并排放置。

我的预期输出：

06 - 12 34 56 78

Answer 1

这应该适合你：

$numbers = "06-12345678";
echo $result = preg_replace("/(\d{2})-(\d{2})(\d{2})(\d{2})(\d{2})/", " -    ", $numbers);

正则表达式解释：

(\d{2})-(\d{2})(\d{2})(\d{2})(\d{2})

• 第一个捕获组 (\d{2})
• \d{2}匹配一个数字[0-9]
  • 量词：{2} 恰好 2 次
• - 匹配字符 - 字面意思
• 第二个捕获组 (\d{2}) //<- 4x 相同
• \d{2}匹配一个数字[0-9]
  • 量词：{2} 恰好 2 次

输出：

06 - 12 34 56 78