查找正确的发生顺序

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 :)";

现在我想按照字符串中出现针的顺序设置PHP数组。所以这是我的针：

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

在$text字符串中搜索针时，这应该是输出：

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

这可以在PHP中实现吗？

这类似于question，但这适用于JavaScript。

Answer 1

str_split可以方便吗

$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 ;
  }
}

Answer 2

这将为您提供预期的结果：

     <?php
    $haystack= "here is a sample: this text, and this will be exploded. this also | this one too :)";
    $needles = array(",",".","|",":");
    $result=array();
    $len = strlen($haystack) ;
    for($i=0;$i<$len;$i++) {
        if(in_array($haystack[$i],$needles)) {
            $result[]=$haystack[$i];
        }
    }
    var_dump($result);
?>

Answer 3

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

preg_match_all('/\:|\,|\||\)/i', $string, $result); 

print_r(  array_shift($result) );

---

使用preg_match_all

模式\:|\,|\||\)

Working demo...

Answer 4

好的，让我们只为了好玩而

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

while (false !== $match = strpbrk($string, $chars)) {
    $list[] = $match[0];
    $string = substr($match, 1);
}

var_dump($list);

您可以see it working - 阅读strpbrk

说明

strpbrk返回第一个匹配字符后的字符串

转1

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

// strpbrk matches ":"
$match = ": this text, and this will be exploded. this also | this one too :)";

// Then, we push the first character to the list ":"
$list = array(':');

// Then we substract the first character from the string
$string = " this text, and this will be exploded. this also | this one too :)";

转2

$string = " this text, and this will be exploded. this also | this one too :)";

// strpbrk matches ","
$match = ", and this will be exploded. this also | this one too :)";

// Then, we push the first character to the list ","
$list = array(':', ',');

// Then we substract the first character from the string
$string = " and this will be exploded. this also | this one too :)";

依此类推，直至不匹配

转5

$string = ")";

// strpbrk doesn't match and return false
$match = false;

// We get out of the while