Question

所以这是我的问题

我有以下字符串

"Are you sure you want to import the MacGourmet data file named \"%@?\"" = "";
"Are you sure you want to import the MacGourmet file named \"%@?\"" = "";
"Are you sure you want to import the MasterCook file named \"%@?\"" = "";
"Are you sure you want to import the Meal-Master file named \"%@?\"" = "";
"Import MasterCook file?" = "Importer le fichier MasterCook ?";

我必须在双引号内提取字符串，因为我正在编写代码

preg_match_all('#"([^"]*)"\s*=\s*"([^"]*)";#', $this->text, $match);

但在$ match变量中我得到以下数组

    Array
(
    [0] => Array
        (
            [0] => "" = "";
            [1] => "" = "";
            [2] => "" = "";
            [3] => "" = "";
            [4] => "Import MasterCook file?" = "Importer le fichier MasterCook ?";
        )

    [1] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 
            [4] => Import MasterCook file?
        )

    [2] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 
            [4] => Importer le fichier MasterCook ?
        )

)

但阵列应该是

Array
(
    [0] => Array
        (
            [0] => "Are you sure you want to import the MacGourmet data file named\"%@?\"" = "";
            [1] => "Are you sure you want to import the MacGourmet file named \"%@?\""= "";
            [2] => "Are you sure you want to import the MasterCook file named \"%@?\"" = "";
            [3] => "Are you sure you want to import the Meal-Master file named \"%@?\"" = "";
            [4] => "Import MasterCook file?" = "Importer le fichier MasterCook ?";
        )

    [1] => Array
        (
            [0] => Are you sure you want to import the MacGourmet data file named\"%@?\"
            [1] => Are you sure you want to import the MacGourmet file named \"%@?\"
            [2] => Are you sure you want to import the MasterCook file named \"%@?\"
            [3] => Are you sure you want to import the Meal-Master file named \"%@?\"
            [4] => Import MasterCook file?
        )

    [2] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 
            [4] => Importer le fichier MasterCook ?
        )

)

你能告诉我正则表达式中的调整吗。

提前致谢。

Answer 1

试试这个：

<?php
$string = '
"Are you sure you want to import the MacGourmet data file named \"%@?\"" = "";
"Are you sure you want to import the MacGourmet file named \"%@?\"" = "";
"Are you sure you want to import the MasterCook file named \"%@?\"" = "";
"Are you sure you want to import the Meal-Master file named \"%@?\"" = "";
"Import MasterCook file?" = "Importer le fichier MasterCook ?";
';

preg_match_all('#"(.*?)"\s*=\s*"(.*?)";#', $string, $match);

print_r($match);

注意懒惰匹配.*?

Answer 2

匹配可能包含转义引用字符串的引用字符串并非完全无关紧要，但并不困难。使用非捕获组(?:...)和OR运算符|，您可以指定要匹配的事物列表。您也可以使用+或*重复该组。

整个正则表达式中使用的\1是对第一个匹配的东西的引用。在这种情况下，它是双引号，(")。我已经这样做了所以将双引号更改为其他内容可能更容易（例如，单引号）。

我评论了正则表达式，因此可能更容易理解。

$examples = array(
    '"Are you sure you want to import the MacGourmet data file named\"%@?\"" = ""',
    '"Are you sure you want to import the MacGourmet file named \"%@?\""= ""',
    '"Are you sure you want to import the MasterCook file named \"%@?\"" = ""',
    '"Are you sure you want to import the Meal-Master file named \"%@?\"" = ""',
    '"Import MasterCook file?" = "Importer le fichier MasterCook ?"',
);
function myGetValues(array $values) {
    static $regex = '/
    ^                          # Start of string
        (")                    # Opening quote; capture for use later
            (?P<left>          # Left side of equal sign
                (?:            # Either of these
                    [^\1]|\\\1 # Not quote or escaped quote
                )*             # Zero or more times
            )                  # End left side
        \1                     # Closing quote
        \s*=\s*                # Equal sign with optional whitespace
        \1                     # Opening quote
            (?P<right>         # Right side of equal sign
                (?:            # Either of these
                    [^\1]|\\\1 # Not quote or escaped quote
                )*             # Zero or more times
            )                  # End right side
        \1                     # Closing quote
        $                      # End of string
    /x';
    $results = array();
    foreach ($values as $value) {
        preg_match($regex, $value, $match);
        if ($match) {
            // We only need the labelled stuff
            $results[] = array(
                'left' => $match['left'],
                'right' => $match['right'],
            );
        }
    }
    return $results;
}
var_dump(myGetValues($examples));

正则表达式调整

2 个答案: