php-字符串中最接近特定短语的数字

我有这样的字符串：

$string = "Serving Time: 5mins
Cooking time 10 mins
Servings 4
Author: Somebody

Directions

1...
2..."

我想获得烹饪时间的输出,这意味着最接近短语“烹饪时间”的数字,我也想获得接近数字的短语“服务”

所以输出将是

$serves = some_kind_of_function($string);
$serves == 4; //true

$cookingtime = some_kind_of_function($string);
$cookingtime == 10 //true

什么是最好的获取方式？

谢谢！
亚当

解决方法:

您可以像这样使用此搜索：

function findNum ( $str, $search ) {
   if ( preg_match("/" . preg_quote($search, '/') . "\D*\K\d+/i", $str, $m) )
      return $m[0];
   return false;
}

$str = "Serving Time: 5mins
Cooking time 10 mins
Servings 4
Author: Somebody

Directions

1...
2...";

findNum( $str, "Cooking" ); // 10
findNum( $str, "Servings" ); // 4