PHP

Question

这是我的字符串：

$string = 'This the s number [:[123084]:] and [:[123085]:] 12374 [:[123087]:]';

如果号码是[:[xxxx]:]这种情况，如何获取号码？我想从这个案例中获取数字（xxxx）作为数组。

我想要这样的结果：

$array = array( 123084, 123085, 123087);

Answer 1

这样就可以了：

$string = 'This the s number [:[123084]:] and [:[123085]:] 12374[:[123087]:]';
preg_match_all('/(?<=\[:\[)\d+(?=\]:\])/', $string, $matches);
print_r($matches);

输出：

Array
(
    [0] => Array
        (
            [0] => 123084
            [1] => 123085
            [2] => 123087
        )
)

解释：

/           : regex delimiter
  (?<=      : lookbehind, zero length assertion, make sure we have the following BEFORE the current position
    \[:\[   : literally [:[
  )         : end lookbehind
  \d+       : 1 or more digits
  (?=       : lookahead, zero length assertion, make sure we have the following AFTER the current position
    \]:\]   : literally ]:]
  )         : end lookahead
/           : regex delimiter

您会找到有用的信息here

PHP - 如何从特定案例中获取数字作为数组

PHP - How to get number from specific case as array

preg-match-all

preg-match