PHP正则表达式百分比或货币

Question

我将需要能够在PHP中提取以下内容，这使我发疯。

以以下字符串为例：

$text = "Nalgene Narrow-Mouth Loop-Top 16-oz. Water Bottle for $4 + pickup and %40 off at REI";

一方面，我需要能够提取：

$4 as extracted currency

和

%40 as extracted percentage

并区分哪个是货币，哪个是百分比。

为了使它更复杂一点，如果货币是，我也应该抓住它：

$4.11 or $ 4.10 (not the spacing and the comma)

或该百分比是否为：

% 40 (note the spacing)

我真的被卡住了，谢谢..

Answer 1

$text = "Nalgene Narrow-Mouth Loop-Top 16-oz. Water Bottle for $4.3 + pickup and % 40 off at REI";
preg_match('/%([ 0-9]+?) /', $text, $matches);
print_r($matches);
preg_match('/\$([ .0-9]+?) /', $text, $matches);
print_r($matches);