php - 捕获大于 1 位小数的数字

Question

我在使用正则表达式时遇到问题，该正则表达式似乎匹配 1.20、2.50 等小数点后一位数字，但不匹配 20.50 或 906.10 等数字

这是正则表达式

/(?:site(?:\\.com)?[\\s\\w\\d^]*)(\\d+\\.\\d{2})/i

我也试过下面的正则表达式，但它似乎漏掉了较小的数字

/(?:site(?:\\.com)?[\\s\\w\\d^]*)(\\d+\\d+\\d+\\.\\d{2})/i    

用 [0-9] 替换 d 似乎不起作用

字符串

Debit card payment to site.com
Germany
on 01 May 1.30
Debit card payment to  site Germany
on 01 May 4.63
 Debit card payment to site.Com
Germany
on 01 May 3.30
Debit card payment to Paypal *Xiao
Ref:- 23948 0000000000 32.98
Debit card payment to site.Com
Germany
on 20 May 17.49
Debit card refund from site.Com
Germany
on 21 May 429.29 

如有任何帮助，我们将不胜感激。

供引用:

$re = "/(?:site(?:\\.com)?[\\s\\w\\d^]*)(\\d+\\.\\d{2})/i"; 
$str = "Debit card payment to site.com
    Germany
    on 01 May 1.30
    Debit card payment to  site Germany
    on 01 May 4.63
     Debit card payment to site.Com
    Germany
    on 01 May 3.30
    Debit card payment to Paypal *Xiao
    Ref:- 23948 0000000000 32.98
    Debit card payment to site.Com
    Germany
    on 20 May 17.49
    Debit card refund from site.Com
    Germany
    on 21 May 429.29 ";
preg_match_all($re, $str, $matches);
print_r($matches)

Answer 1

或者这个带有isg选项的模式

site.*?\D\K(\d+\.\d{2})  

Demo
解释:

site            # "site"
.               # Any character except line break
*?              # (zero or more)(lazy)
\D              # <character that is not a digit>
\K              # <Reset start of match>
(               # Capturing Group (1)
  \d            # <digit 0-9>
  +             # (one or more)(greedy)
  \.            # "."
  \d            # <digit 0-9>
  {2}           # (repeated {2} times)
)               # End of Capturing Group (1)