mysqli的当前工作代码如下.我想将其转换为准备好的陈述.基本上有三个SQL查询需要转换为预处理语句.第一部分是我最困难的部分,我可以找出准备好的计算方法来获得计数值,我最终设法弄明白了.
<?PHP
// Script and tutorial written by Adam Khoury @ developPHP.com
// Line by line explanation : youtube.com/watch?v=T2QFNu_mivw
include_once("storescripts/connect_to_MysqLi.PHP");
// This first query is just to get the total count of rows
$sql2 = "SELECT COUNT(id) FROM products ";
$query2 = MysqLi_query($myConnection, $sql2);
$row = MysqLi_fetch_row($query2);
// Here we have the total row count
$rows = $row[0];
// This is the number of results we want displayed per page
$page_rows = 10;
// This tells us the page number of our last page
$last = ceil($rows/$page_rows);
// This makes sure $last cannot be less than 1
if($last < 1){
$last = 1;
}
// Establish the $pagenum variable
$pagenum = 1;
// Get pagenum from URL vars if it is present, else it is = 1
if(isset($_GET['pn'])){
$pagenum = preg_replace('#[^0-9]#', '', $_GET['pn']);
}
// This makes sure the page number isn't below 1, or more than our $last page
if ($pagenum < 1) {
$pagenum = 1;
} else if ($pagenum > $last) {
$pagenum = $last;
}
// This sets the range of rows to query for the chosen $pagenum
$limit = 'LIMIT ' .($pagenum - 1) * $page_rows .',' .$page_rows;
// This is your query again, it is for grabbing just one page worth of rows by applying $limit
$sql = "SELECT id,product_name, price FROM products ORDER BY product_name DESC $limit";
$query = MysqLi_query($myConnection, $sql);
// This shows the user what page they are on, and the total number of pages
$textline1 = "Products (<b>$rows</b>)";
$textline2 = "Page <b>$pagenum</b> of <b>$last</b>";
// Establish the $paginationCtrls variable
$paginationCtrls = '';
// If there is more than 1 page worth of results
if($last != 1){
/* First we check if we are on page one. If we are then we don't need a link to
the prevIoUs page or the first page so we do nothing. If we aren't then we
generate links to the first page, and to the prevIoUs page. */
if ($pagenum > 1) {
$prevIoUs = $pagenum - 1;
$paginationCtrls .= '<a href="'.$_SERVER['PHP_SELF'].'?pn='.$prevIoUs.'">PrevIoUs</a> ';
// Render clickable number links that should appear on the left of the target page number
for($i = $pagenum-4; $i < $pagenum; $i++){
if($i > 0){
$paginationCtrls .= '<a href="'.$_SERVER['PHP_SELF'].'?pn='.$i.'">'.$i.'</a> ';
}
}
}
// Render the target page number, but without it being a link
$paginationCtrls .= ''.$pagenum.' ';
// Render clickable number links that should appear on the right of the target page number
for($i = $pagenum+1; $i <= $last; $i++){
$paginationCtrls .= '<a href="'.$_SERVER['PHP_SELF'].'?pn='.$i.'">'.$i.'</a> ';
if($i >= $pagenum+4){
break;
}
}
// This does the same as above, only checking if we are on the last page, and then generating the "Next"
if ($pagenum != $last) {
$next = $pagenum + 1;
$paginationCtrls .= ' <a href="'.$_SERVER['PHP_SELF'].'?pn='.$next.'">Next</a> ';
}
}
$dynamicList = '';
while($row = MysqLi_fetch_array($query, MysqLI_ASSOC)){
$id = $row["id"];
$product_name = $row["product_name"];
$price = $row["price"];
$dynamicList .= "
<li><div class='product'>
<a href='product.PHP?id=$id' class='info'>
<span class='holder'>
<img src='inventory_images/$id.jpg' alt='$product_name' />
<span class='book-name'>$product_name</span>
</a>
<a href='product.PHP?id=$id' class='buy-btn'>RM<span class='price'>$price</span></a>
</div>
</li>
";
}
// Close your database connection
MysqLi_close($myConnection);
?>
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body{ font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;}
div#pagination_controls{font-size:21px;}
div#pagination_controls > a{ color:#06F; }
div#pagination_controls > a:visited{ color:#06F; }
</style>
</head>
<body>
<div>
<h2><?PHP echo $textline1; ?> Paged</h2>
<p><?PHP echo $textline2; ?></p>
<p><?PHP echo $dynamicList; ?></p>
<div id="pagination_controls"><?PHP echo $paginationCtrls; ?></div>
</div>
</body>
</html>
提前感谢任何帮助
解决方法:
$stmt=$myConnection->prepare('SELECT COUNT(id) FROM products');
// Don't use bind_result()...
// execute your statement
$stmt->execute();
// Get result set into a MysqLi result resource
$result = $stmt->bind_result($id);
// array to hold all rows
$rows = array();
// All results bound to output vars
while ($stmt->fetch()) {
// Append an array containing your result vars onto the rowset array
$rows[] = array(
'id' => $id
);
}
$rows=$id;
第一部分我想你已经得到了它