使用搜索表单搜索查询后，我一直遇到一些难以找到无结果的消息。我的代码如下。请有人帮忙。
我还希望能够在我提交搜索时立即清除我的查询字符串，如果我在第3页上，然后使用我的表单进行搜索，我没有显示结果，因为我是由于已设置的查询字符串，已在第3页上。希望这是有道理的。
function supportquery($viewstate) {
$display = 6;// number of results per page
if (isset($_GET['np'])) {
$num_pages = $_GET['np'];
} else {
$where = "1"; // default
switch ($viewstate) {
case "open": $where = "status='Open'"; break;
case "pending": $where = "status LIKE 'Pending%'"; break;
case "closed": $where = "status='Closed'"; break;
}
$query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop,
message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev WHERE $where ORDER BY ticket_number DESC";
$search = "%" . $_POST["search"] . "%";
if ($_POST["search"]) { $query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop, message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev WHERE ticket_number LIKE '$search' OR email LIKE '$search' ORDER BY ticket_number DESC";
}
$query_result = mysql_query ($query);
$num_records = @mysql_num_rows ($query_result);
if ($num_records > $display) {
$num_pages = ceil ($num_records/$display);
} else {
$num_pages = 1;
}
}
if (isset($_GET['startoftable'])) {
$start = $_GET['startoftable'];
} else {
$start = 0;// start of results from row 0 in table
}
$query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop, message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev ORDER BY ticket_number DESC LIMIT $start, $display";
if ($viewstate=='open') {
$query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop, message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev WHERE status='Open'ORDER BY ticket_number DESC LIMIT $start, $display";
}
elseif ($viewstate=='pending') {
$query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop, message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev WHERE status LIKE 'Pending%' ORDER BY ticket_number DESC LIMIT $start, $display";
}
elseif ($viewstate=='closed') {
$query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop, message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev WHERE status='Closed' ORDER BY ticket_number DESC LIMIT $start, $display";}
if ($_POST["search"]) {
$query = "SELECT ticket_number, first_name, surname, email, product, retailer, DATE_FORMAT(dop, '%d %M %Y') AS dop, message, address, DATE_FORMAT(created, '%d %M %Y %r') AS created, status FROM support_dev WHERE ticket_number LIKE '$search' OR email LIKE '$search' ORDER BY ticket_number DESC LIMIT $start, $display";
}
$result = @mysql_query ($query);
$num = mysql_num_rows ($result);
if ($num > 0) {
if ($num_pages > 1) {
echo '<div class="pagination"><p>';
$current_page = ($start/$display) + 1;
if ($current_page != 1) {
echo '<a href="?page_id=1072&startoftable=' . (0) . '&np=' . $num_pages . '&viewstate=' . $viewstate .'">First</a> ';
echo '<a href="?page_id=1072&startoftable=' . ($start - $display) . '&np=' . $num_pages . '&viewstate=' . $viewstate . '"><</a> ';
}
// range of num links to show
$range = 4;
// loop to show links to range of pages around current page
for ($i = ($current_page - $range); $i < (($current_page + $range) + 1); $i++) {
// if it's a valid page number...
if (($i > 0) && ($i <= $num_pages)) {
// if we're on current page...
if ($i == $current_page) {
// 'highlight' it but don't make a link
echo " [<b>$i</b>] ";
// if not current page...
} else {
// make it a link
echo ' <a href="?page_id=1072&startoftable=' . (($display * ($i - 1))) . '&np=' . $num_pages . '&viewstate=' . $viewstate .'">' .$i .'</a> ';
}}}
if ($current_page != $num_pages) {
echo '<a href="?page_id=1072&startoftable=' . ($start + $display) . '&np=' . $num_pages . '&viewstate=' . $viewstate .'">></a> ';
echo '<a href="?page_id=1072&startoftable=' . ( $display * $num_pages-$display ) . '&np=' . $num_pages . '&viewstate=' . $viewstate .'">Last</a> ';
}
echo '</p></div> ';
}
if ($result = mysql_query ($query)) {
echo '
<div id="supviewwrapperheader">
<div id="supviewticket"><p>Ticket</p></div>
<div id="supviewfirst"><p>First Name</p></div>
<div id="supviewlast"><p>Last Name</p></div>
<div id="supviewemail"><p>Email</p></div>
<div id="supviewproduct"><p>Product</p></div>
<div id="supviewretailer"><p>Retailer</p></div>
<div id="supviewdop"><p>D.O.P.</p></div>
<div id="supviewmessage"><p>Message</p></div>
<div id="supviewaddress"><p>Address</p></div>
<div id="supviewcreated"><p>Date created</p></div>
<div id="supviewstatus"><p>Status</p></div>
<div id="supviewbuttons"><p></p></div>
</div>
';
while ($row = mysql_fetch_array($result, MYSQL_NUM)) {
echo "
<div id=\"supviewwrapper\" class=\"".($row[10])."\">
<div id=\"supviewticket\"><p><a name=\"a".$row[0]."\"></a>$row[0]</p></div>
<div id=\"supviewfirst\"><p>$row[1]</p></div>
<div id=\"supviewlast\"><p>$row[2]</p></div>
<div id=\"supviewemail\"><p>$row[3]</p></div>
<div id=\"supviewproduct\"><p>$row[4]</p></div>
<div id=\"supviewretailer\"><p>$row[5]</p></div>
<div id=\"supviewdop\"><p>$row[6]</p></div>
<div id=\"supviewmessage\"><p>$row[7]</p></div>
<div id=\"supviewaddress\"><p>$row[8]</p></div>
<div id=\"supviewcreated\"><p>$row[9]</p></div>
<div id=\"supviewstatus\"><p>$row[10]</p></div>
<div id=\"supviewbuttons\"><p><form method=\"post\" action=\"".htmlentities($_SERVER['REQUEST_URL'])."#a".$row[0]."\"><input type=\"hidden\" name=\"close_row\" value=\"".($row[0])."\" /><input type=\"hidden\" name=\"viewstate\" value=\"".$viewstate."\" /><INPUT TYPE=\"submit\" name=\"open\" VALUE=\"\" class=\"submit_open\"><br /><INPUT TYPE=\"submit\" name=\"pending\" VALUE=\"\" class=\"submit_pending\"><br /><INPUT TYPE=\"submit\" name=\"pending_ami\" VALUE=\"\" class=\"submit_pendingami\"><br /><INPUT TYPE=\"submit\" name=\"pending_arp\" VALUE=\"\" class=\"submit_pendingarp\"><br /><INPUT TYPE=\"submit\" name=\"close\" VALUE=\"\" class=\"submit_closed\"></form></p></div></div>";
}
}
mysql_free_result ($result);
}
答案 0 :(得分：1)
您应该使用LIKE "%{$search}%"来匹配字符串中的字符串。