如何从字符串中提取#tags？ [复制]

Question

我想从一个字符串中提取所有#words，例如如果我有这个字符串：

Hello #people how are you doing #today I am in #asia and weather is super #nice

我需要一个 PHP 函数来返回这些：

#people
#today
#asia
#nice

Answer 1

这是我应用您的请求的示例

$string = "Hello #people how are you doing #today I am in #asia and weather is super #nice";
$regex = '~(#\w+)~';
if (preg_match_all($regex, $string, $matches, PREG_PATTERN_ORDER)) {
   foreach ($matches[1] as $word) {
      echo $word .'<br/>';
   }
}