解析格式化字符串——隔离带引号的子字符串和大括号 UUID

发布于 2024-09-03 11:07:55 字数 151 浏览 1 评论 0原文

我正在尝试解析操作系统实例及其唯一标识符的列表。我正在寻找一种解决方案来解析文本字符串，并将值传递给两个变量。待解析的字符串如下：

"Ubuntu 9.10" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}

原文

I am trying to parse a list of operating system instances with their unique identifiers. I am looking for a solution to parse a text string, and pass the values into two variables. The string to be parsed is as followed:

"Ubuntu 9.10" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}

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转瞬即逝 2024-09-10 11:07:55

我一直在寻找借口阅读 sscanf() 的文档：

sscanf($s, '"%[^"]" {%[^}]}', $os, $ident);
echo $os, "<br>", $ident;

后续：出于兴趣，目前对此问题有三个答案：

sscanf: 0.92999792098999 seconds
preg_match: 4.73761510849 seconds
str_replace x2 + preg_split: 3.7644839286804 seconds

此处为基准。有趣的是，两个 str_replace() 和一个 preg_split() 比 preg_match() 更快。

I've been looking for an excuse to read the docs for sscanf():

sscanf($s, '"%[^"]" {%[^}]}', $os, $ident);
echo $os, "<br>", $ident;

Followup: For interest's sake, out of the three answers currently on this question:

sscanf: 0.92999792098999 seconds
preg_match: 4.73761510849 seconds
str_replace x2 + preg_split: 3.7644839286804 seconds

Benchmark here. Funny that two str_replace() and a preg_split() are faster than the preg_match().

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许你一世情深 2024-09-10 11:07:55

您可以使用正则表达式来匹配您需要的组：

$str = '"Ubuntu 9.10" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}';
preg_match('/^"(.*)" {(.*)}$/', $str, $matches);

您可以根据值缩小正则表达式的范围（例如第二个 .* 可以是 [0-9a-f-]+），但这就足够了。 $matches[1] 将为“Ubuntu 9.10”，$matches[2] 将为“40f2324d-a6b2-44e4-90c3-0c5fa82c987d”

You can use regular expressions to match the groups you need:

$str = '"Ubuntu 9.10" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}';
preg_match('/^"(.*)" {(.*)}$/', $str, $matches);

You can make the regular expression narrower based on the values (e.g. the second .* could be [0-9a-f-]+), but that's sufficient. $matches[1] will be "Ubuntu 9.10", and $matches[2] will be "40f2324d-a6b2-44e4-90c3-0c5fa82c987d"

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稚然 2024-09-10 11:07:55

这使用 str_replace 和 preg_split：

$s = "\"Ubuntu 9.10\" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}";
$s = str_replace("\" ", "|", $s); // substitute middle quotation mark and space for a delimiter
$s = str_replace("\"", "", $s); // remove quotation marks
$vars = preg_split('/\|/', $s); // split by delimiter
print_r($vars);

This gets the two strings as first and second elements of a string array using str_replace and preg_split:

$s = "\"Ubuntu 9.10\" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}";
$s = str_replace("\" ", "|", $s); // substitute middle quotation mark and space for a delimiter
$s = str_replace("\"", "", $s); // remove quotation marks
$vars = preg_split('/\|/', $s); // split by delimiter
print_r($vars);

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