正則表達式匹配變量名稱和值（一個數組）

Question

所以我得到了這個問題。 我有一個這樣的字符串：

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

，我想，以配合正則表達式，使我有變量名：_0x2804和變量的值。

我創造了這個正則表達式：

var ([_0-9a-zA-Z]*).?=.?\[([\"a-zA-Z0-9,\\]*)\] 

這似乎在我的正則表達式測試工作，但試圖（圍繞它以「/」當然），使用它在PHP的時候。它與preg_match和preg_match_all錯誤都失敗

Answer 1

您尚未關閉第二個字符類。

的問題是在這裏：

\[([\"a-zA-Z0-9,\\]*)\] 
       ^^^ 

要匹配你需要逃避它字面[和你有它正確。角色分類中還有\\以包含\，但這是不正確的。它正在做的是逃避以下]，所以你沒有結束角色類。你需要的是\\\\有在字符類\：

\[([\"a-zA-Z0-9,\\\\]*)\] 
       ^^^^ 

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