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Example #1 �Ϸ�ģʽʾ��

  • /<\/\w+>/
  • |(\d{3})-\d+|Sm
  • /^(?i)php[34]/
  • {^\s+(\s+)?$}

Example #2 �Ƿ�ģʽʾ��

  • /href='(.*)' - ȱʧ�����ָ���
  • /\w+\s*\w+/J - δ֪ģʽ���η�"J"
  • 1-\d3-\d3-\d4| - ȱʧ��ʼ�ָ���