重新格式化字符串PHP数组中的数字

Question

我有一个包含这样的字符串的数组:

$items = array(
  "Receive 10010 from John",
  "Send 1503000 to Jane",
  "Receive 589 from Andy",
  "Send 3454 to Mary"
);

我想重新格式化这个数组中的数字,所以它将变成这样:

$items = array(
  "Receive 10.010 from John",
  "Send 1.503.000 to Jane",
  "Receive 589 from Andy",
  "Send 3.454 to Mary"
);

如果我使用number_format函数,它将看起来像数字varibale:

$number = '412223';
number_format($number,0,',','.');
echo $number; //412.223

Answer 1

您可以使用preg_replace_callback匹配字符串中的数字并应用一些自定义格式.对于单个字符串,这将如下所示:

$string = "Receive 10010 from John";

$formatted = preg_replace_callback( "/[0-9]+/", function ($matches) {
    return number_format($matches[0], 0, ',', '.');
}, $string);

echo $formatted;

从John收到10.010

如果要将相同的逻辑应用于整个数组,可以将以上内容包装在以下内容中array_map:

$formatted = array_map(function ($string) {
    return preg_replace_callback( "/[0-9]+/", function ($matches) {
        return number_format($matches[0], 0, ',', '.');
    }, $string);
}, $items);

print_r($formatted);

数组
(
  [0] =>从John
  [1] 接收10.010 =>发送1.503.000到Jane
  [2] =>从Andy接收589
  [3] =>发送3.454到Mary
)