PHP Page class instance PHP and MySQL simple pagination class code

Class Pagemodel { /** * Get the number of page groups * @param unknown $page current page number * Total number of items @param unknown $goodsCount * @param unknown $pageLength The number of pages displayed per page */ public static function Getpagearr ($page, $goodsCount, $pageCountLength, $pageLength) { Total pages $allPageCount = Ceil ($goodsCount/$pageLength); If the page is always shorter than the length, set the page length to the total number of pages if ($allPageCount <= $pageCountLength) { $allPageCount = Ceil ($goodsCount/$pageLength); } Total page Count one page to finish if ($allPageCount <= $pageCountLength) { for ($i = 0; $i < $allPageCount; $i + +) { $arr [] = Array (' page ' = + $i + 1); } return $arr; } The length before and after $halfLength = Floor ($pageCountLength/2); Because it is too small, so put the original position, left if ($page <= $halfLength) { $arr = Array (); for ($i = 0; $i < $pageCountLength; $i + +) { $arr [] = Array (' page ' = + $i + 1); } return $arr; } Too big, only take to the edge, beyond also only to the edge if ($page > $allPageCount-floor ($pageCountLength/2)) { for ($i =-$pageCountLength; $i < 0; $i + +) { $arr [] = Array (' page ' = + $allPageCount + $i + 1); } return $arr; } The middle of the number, the middle of the take out for ($i =-$halfLength; $i < $pageCountLength-$halfLength; $i + +) { $arr [] = Array (' page ' = = $page + $i); } return $arr; } } Copy Code Second, PHP page class code Code: Class helper_page{ /** total number of messages */ var $infoCount; /** Total pages */ var $pageCount; /** show number of bars per page */ var $items; /** Current Page */ var $pageNo; /** the starting position of the query */ var $startPos; /** Next Page */ var $nextPageNo; /** Previous Page */ var $prevPageNo; function Helper_page ($infoCount, $items, $pageNo) { $this->infocount = $infoCount; $this->items = $items; $this->pageno = $pageNo; $this->pagecount = $this->getpagecount (); $this->adjustpageno (); $this->startpos = $this->getstartpos (); } function Adjustpageno () { if ($this->pageno = = "| | $this->pageno < 1) $this->pageno = 1; if ($this->pageno > $this->pagecount) $this->pageno = $this->pagecount; } /** * Next Page */ function Gotonextpage () { $nextPageNo = $this->pageno + 1; if ($nextPageNo > $this->pagecount) { $this->nextpageno = $this->pagecount; return false; } $this->nextpageno = $nextPageNo; return true; } /** * Previous Page */ function Gotoprevpage () { $prevPageNo = $this->pageno-1; if ($prevPageNo < 1) { $this->prevpageno = 1; return false; } $this->prevpageno = $prevPageNo; return true; } function Getpagecount () { Return Ceil ($this->infocount/$this->items); } function Getstartpos () { Return ($this->pageno-1) * $this->items; } } Copy Code

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