您好我正在尝试从不同的URL获取产品的价格,我知道如何获取内容,但我很难写正则表达式函数,有人可以帮我写一个。它应匹配$后的任何数字,例如“$ 40”“$ 40.95”和“$ 45”
谢谢
答案 0 :(得分:1)
$string = '
Hi! This answer will cost you $10.
If you do not vote this answer up, it will cost you another in $1.23 or $ 2.45.
Be good and transfer me arround $12.45 bucks to my IBAN SI56 1234 4567 8901 234.
Just joking, it is for free ;-)
';
preg_match_all('~(\$\h?\d+(\.\d+)?)~', $string, $matches);
echo "<pre>".print_r($matches[1],true)."</pre>";
这将输出:
Array
(
[0] => $10
[1] => $1.23
[2] => $ 2.45
[3] => $12.45
)
答案 1 :(得分:0)
您可以使用以下内容:
/(\$[0-9]+(\.[0-9]+)?)/