php - 找到正确的出现顺序

Question

我有一个 PHP 字符串，例如这个字符串 (haystack):

$text = "here is a sample: this text, and this will be exploded. this also | this one too :)";

现在我想按照针在字符串中出现的顺序设置一个 PHP 数组。所以这是我的针:

$needle = array(",",".","|",":");

在 $text 字符串中搜索针时，输出应该是这样的:

Array (
   [0] => :
   [1] => ,
   [2] => .
   [3] => |
   [4] => :
)

这可以用 PHP 实现吗？

这类似于question但那是针对 JavaScript 的。

Answer 1

str_split 在这里很方便

$text = "here is a sample: this text, and this will be exploded. this also | this one too :)";
$needles = array(",",".","|",":");
$chars = str_split($string);

$found = array();

foreach($chars as $char){
  if (in_array($char, $needles)){
    $found[] = $char ;
  }
}