php - reg ex to get price in string and add html tags in php

Question

i'm trying to formulate a regular expression to find prices in a string and put html tags around. i've come up with this :

    $pattern = '/([1-9][0-9]*[,|.][0-9]{2})/i';
    $replace = "<p>$1</p>";

    $string = preg_replace($pattern, $replace, $string);

this works well so far for most cases except when something like 22,123 appears which will also be changed to

    <p>22,12</p>3

how can i make this reg ex ignore numbers with more than two decimals?

Answer 1

您可以在其末尾添加一个否定的前瞻：

$pattern = '/([1-9][0-9]*[,|.][0-9]{2})(?!\d)/i';

这会阻止数字在匹配后出现。（顺便说一下，所有的[0-9]s 都可以变成\ds。）

有用！