示例
示例 #1 合法模式示例
/<\/\w+>/|(\d{3})-\d+|Sm/^(?i)php[34]/{^\s+(\s+)?$}
示例 #2 非法模式示例
-
/href='(.*)'- 缺失结束分隔符 -
/\w+\s*\w+/J- 未知模式修饰符"J" -
1-\d3-\d3-\d4|- 缺失开始分隔符
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