Beautiful PHP verification code

Beautiful PHP verification code

Class Page { Private $ total; // total records Private $ pagesize; // The number of entries displayed on each page Private $ limit; // limit Private $ page; // The current page number. Private $ pagenum; // the total page number. Private $ url; // address Private $ bothnum; // The number of numeric pages on both sides // Constructor initialization Public function _ construct ($ _ total, $ _ pagesize ){ $ This-> total = $ _ total? $ _ Total: 1; $ This-> pagesize = $ _ pagesize; $ This-> pagenum = ceil ($ this-> total/$ this-> pagesize ); $ This-> page = $ this-> setPage (); $ This-> limit = "LIMIT". ($ this-> page-1) * $ this-> pagesize. ", $ this-> pagesize "; $ This-> url = $ this-> setUrl (); $ This-> bothnum = 2; } // Interceptor Private function _ get ($ _ key ){ Return $ this-> $ _ key; } // Obtain the current page number Private function setPage (){ If (! Empty ($ _ GET ['Page']) { If ($ _ GET ['Page']> 0 ){ If ($ _ GET ['Page']> $ this-> pagenum ){ Return $ this-> pagenum; } Else { Return $ _ GET ['Page']; } } Else { Return 1; } } Else { Return 1; } } // Obtain the address Private function setUrl (){ $ _ Url = $ _ SERVER ["REQUEST_URI"]; $ _ Par = parse_url ($ _ url ); If (isset ($ _ par ['query']) { Parse_str ($ _ par ['query'], $ _ query ); Unset ($ _ query ['Page']); $ _ Url = $ _ par ['path']. '? '. Http_build_query ($ _ query ); } Return $ _ url; } // Numeric Directory Private function pageList (){ For ($ I = $ this-> bothnum; $ I >=1; $ I --){ $ _ Page = $ this-> page-$ I; If ($ _ page <1) continue; $ _ Pagelist. = 'URL. '& page ='. $ _ page. '">'. $ _ page .''; } $ _ Pagelist. = ''. $ this-> page .''; For ($ I = 1; $ I <= $ this-> bothnum; $ I ++ ){ $ _ Page = $ this-> page + $ I; If ($ _ page> $ this-> pagenum) break; $ _ Pagelist. = 'URL. '& page ='. $ _ page. '">'. $ _ page .''; } Return $ _ pagelist; } // Homepage Private function first (){ If ($ this-> page> $ this-> bothnum + 1 ){ Return 'URL. '"> 1 ...'; } } // Previous Page Private function prev (){ If ($ this-> page = 1 ){ Return 'previous page '; } Return 'URL. '& page ='. ($ this-> page-1). '"> Previous page '; } // Next page Private function next (){ If ($ this-> page ==$ this-> pagenum ){ Return 'next page '; } Return 'URL. '& page ='. ($ this-> page + 1). '"> Next page '; } // Last Page Private function last (){ If ($ this-> pagenum-$ this-> page> $ this-> bothnum ){ Return '... url.' & page = '. $ this-> pagenum.' "> '. $ this-> pagenum .''; } } // Paging information Public function showpage (){ $ _ Page. = $ this-> first (); $ _ Page. = $ this-> pageList (); $ _ Page. = $ this-> last (); $ _ Page. = $ this-> prev (); $ _ Page. = $ this-> next (); Return $ _ page; } } ?> Shows the paging style: Instructions for use: $ _ Page = new Page ($ _ total, $ _ pagesize); // where $ _ total indicates the total number of data sets, and $ _ pagesize indicates the number displayed on each page. ?>

Verification code, PHP