正则表达式帮助，贪婪与非贪婪 [英] Regex help, greedy vs. non-greedy

问题描述

嘿，我有一个大的html字符串，例如

Hey all I have a large html string like

<a style="background: rgb(100, 101, 43) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-backg    round-inline-policy: -moz-initial;" href="#">swatch4</a>  
<a style="background: rgb(34, 68, 33) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-b    ackground-inline-policy: -moz-initial;" href="#">swatch5</a>  
<a style="background: rgb(11, 38, 68) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -m    oz-background-inline-policy: -moz-initial;" href="#">swatch6</a>  
<a style="background: rgb(39, 11, 60) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial    ; -moz-background-inline-policy: -moz-initial;" href="#">swatch7</a>

...这些条目很多...

...There are lot of these entries...

我想最终得到的是一个php数组

What I would like to end up with is a php array

$colors = array(
 'rgb(34, 34, 33)',
 'rgb(11, 38, 68)',
...
); 

等

我需要帮助提取字符串的rgb部分的步骤.我的正则表达式在吃太多的弦时遇到麻烦.任何帮助将不胜感激，我想记下来并学习如何做(而不是仅仅完成它).我正在使用vim btw.

The step I need help with extracting the rgb part of the string. I am having trouble with my regexs eating too much of the string. Anyhelp would be appreciated, i would like to get this down and learn how to do (as opposed to just having it done). I am using vim btw.

谢谢

推荐答案

简单的正则表达式是

(rgb\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*\))

每个"\ s * \ d {1,3} \ s *"表示:

Each "\s*\d{1,3}\s*," means:

• 匹配空间(如molf在注释中所说的''或制表符等空格，其范围为0到inf)
• 匹配一个数字(从1到3，因为您从0到255)
• 匹配其他空格
• 匹配逗号(，)

您可以将Paolo的代码用于数组部分.

You can use Paolo's code for the array part.

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