使用正则表达式从字符串中提取两个值

Question

I have a string that looks like this:

'p10005c4'

I need to extract the productId 10005 and the colorId 4 from that string into these variables:

$productId $colorId

productId is > 10000. colorId > 1.

How can I do this clean and nice using regex?

Answer 1

如果您的字符串始终是pXXXcXX ，我建议您放弃正则表达式，而只使用几个字符串函数。

list($productId,$colorId) = explode('c',substr($string,1),2);

Answer 2

You can use the following regex:

'/p(\d+)c(\d+)/'

If you want to make sure the product code is 5 digits:

'/p(\d{5})c(\d+)/'

Answer 3

This should be possible with the following regex:

/p(\d+)c(\d+)/

This basically means, match any string that consists of ap, followed by one or more digits, then followed by ac, then followed by one or more digits. The parentheses indicate capture groups, and since you want to capture the two ids, they're surrounded by them.

To use this for your purposes, you'd do something like the following:

$str = 'p10005c4';
$matches = array();

preg_match('/p(\d+)c(\d+)/', $str, $matches);

$productId = $matches[1];
$colorId   = $matches[2];

For more information on getting started with regular expressions, you might want to take a look at Regular-Expressions.info .