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php - 如何在php中获取所有具有匹配文本的行

问题描述

我这里有一根绳子供练习。

$message = "Hurray! You've received a $100 Amazon Gift Card. Hope you enjoy this Amazon Gift Card! What's next? Apply the gift card to your Amazon account:=20 https://www.amazon.com/g/ Don't have an Amazon account? Sign up to redeem: www.amazon.com You can also redeem your gift card at checkout using this claim code: NE7N-TUD6NV-GUAB We hope to see you again soon, Amazon.com Once applied to your Amazon account, the entire amount will be added to you= r gift card balance. Your gift card balance can't be transferred to other a= ccounts, used to buy other gift cards, or, except as required by law, redee= med for cash. Your gift card balance will be applied automatically to eligible orders dur= ing the checkout process and when using 1-Click. If you don=E2=80=99t want = to use your gift card balance on your order, you can unselect it as a payme= nt method in checkout.=20 If you experience any issues using your gift card, you can reference your g= ift card by providing the following information to Customer Service: Order Number: 234343433433";

我想使用 preg_match 获取索赔代码，但我失败了。这是我的代码。

 if(preg_match_all("/claim code:.*\s/", $message, $array)){
           print_r($array);
       }

输出是这样的

Array ( [0] => Array ( [0] => claim code: ) )

但我希望它显示索赔代码，有人可以帮忙吗？

标签： phpregex

解决方案

我会使用模式(?<=\bclaim code: )\S+：

$message = "Hurray! You've received a $100 Amazon Gift Card. Hope you enjoy this Amazon Gift Card! What's next? Apply the gift card to your Amazon account:=20 https://www.amazon.com/g/ Don't have an Amazon account? Sign up to redeem: www.amazon.com You can also redeem your gift card at checkout using this claim code: NE7N-TUD6NV-GUAB We hope to see you again soon, Amazon.com Once applied to your Amazon account, the entire amount will be added to you= r gift card balance. Your gift card balance can't be transferred to other a= ccounts, used to buy other gift cards, or, except as required by law, redee= med for cash. Your gift card balance will be applied automatically to eligible orders dur= ing the checkout process and when using 1-Click. If you don=E2=80=99t want = to use your gift card balance on your order, you can unselect it as a payme= nt method in checkout.=20 If you experience any issues using your gift card, you can reference your g= ift card by providing the following information to Customer Service: Order Number: 234343433433";
preg_match_all("/(?<=\bclaim code: )\S+/", $message, $matches);
print_r($matches[0][0]);

这打印：

NE7N-TUD6NV-GUAB

您当前方法的主要问题是正则表达式模式本身。 \s*匹配零个或多个空白字符，您应该使用\S*我上面使用的代替。

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