我在这里只有一个简单的问题是desc：
我正在为我的网站处理新闻档案页面，搜索档案是以开始日期，结束日期和新闻类别作为搜索参数完成的。表单值存储在$ _SESSION var中，然后它们作为数组传递以用于分页和其他目的。 我的问题是如果用户由于某种原因再次进行新的搜索，如何防止在主存档搜索页面上显示搜索结果。
这是代码
<?php
session_start();
if (isset($_POST['submit'])) {
//get data from the form
$archFld_1 = $_POST['archiveFld1'];
$archFld_2 = $_POST['archiveFld2'];
$archFld_3 = $_POST['archiveFld3'];
//just some check on fields
if (strlen($archFld_1) > 10) { $archFld_1 = ""; }
if (strlen($archFld_2) > 10) { $archFld_2 = ""; }
//save them as a array and store to session var
$_archValues = array($archFld_3, $archFld_1, $archFld_2);
$_SESSION['storeValues'] = $_archValues;
}
if (isset($_SESSION['storeValues'])) {
//check params for search
//set cat for query
if ($_SESSION['storeValues'][0] > 0) { $valCat = "AND newsCat=". $_SESSION['storeValues'][0] ." "; } else { $valCat = ""; }
//set date for query
if(($_SESSION['storeValues'][1] != "" ) && ($_SESSION['storeValues'][2] == "")) {
$DateStart = $_SESSION['storeValues'][1];
$valDate = " AND STR_TO_DATE(newsDate, '%d-%m-%Y') >= STR_TO_DATE('$DateStart', '%d-%m-%Y') ";
}
if(($_SESSION['storeValues'][2] != "") && ($_SESSION['storeValues'][1]=="")) {
$DateEnd = $_SESSION['storeValues'][2];
$valDate = " AND STR_TO_DATE(newsDate, '%d-%m-%Y') <= STR_TO_DATE('$DateEnd', '%d-%m-%Y') ";
}
if(($_SESSION['storeValues'][1]!="") && ($_SESSION['storeValues'][2] != "")) {
$DateStart = $_SESSION['storeValues'][1];
$DateEnd = $_SESSION['storeValues'][2];
$valDate = " AND STR_TO_DATE(newsDate, '%d-%m-%Y') BETWEEN STR_TO_DATE('$DateStart', '%d-%m-%Y') AND STR_TO_DATE('$DateEnd', '%d-%m-%Y') ";
}
//query string and stire it to session
$archQuery_string = $valCat.$valDate;
$_SESSION['storeQuery'] = $archQuery_string;
}
//pagination start
$page = $_GET['id'];
$perPage = 10;
$result = wbQuery("SELECT * FROM wb_news WHERE newsLang=1 ". $_SESSION["storeQuery"] ."ORDER BY newsId DESC");
$totalPages = mysql_num_rows($result);
if(!$page)
$page = 1;
$start = ($page - 1)*$perPage;
?>
<div id="sps_middle">
<div class="sps_cnt">
<div id="sps_middle_ly1">
<div class="sps_cnt_small">
<div class="sps_page_title"><h3><?php echo $wb_lng['txtArchiveTitle']; ?></h3></div>
<div class="sps_pages_cnt" style="padding-top: 10px; float: left; margin-bottom: 15px;">
<div class="sps_middle_col01">
<div style="float: left;">
<p>
<?php echo $wb_lng['txtArchiveInfo']; ?>
</p>
<form action="<?php $PHP_SELF; ?>" method="post" name="archiveForm" class="archiveForm">
<ul>
<li>
<input name="archiveFld1" type="text" id="archiveFld1" value="<?php echo $wb_lng['txtArhivaFld_01']; ?>" />
<input name="archiveFld2" type="text" id="archiveFld2" value="<?php echo $wb_lng['txtArhivaFld_02']; ?>" />
<select name="archiveFld3">
<option value="0"><?php echo $wb_lng['txtArhivaFld_07']; ?></option>
<option value="0" ><?php echo $wb_lng['txtArhivaFld_06']; ?></option>
<option value="1"><?php echo $wb_lng['txtArhivaFld_03']; ?></option>
<option value="2"><?php echo $wb_lng['txtArhivaFld_04']; ?></option>
<option value="3"><?php echo $wb_lng['txtArhivaFld_05']; ?></option>
</select>
</li>
<li style="float: right;">
<input name="reset" type="reset" class="sps_archiveform_btn" value="<?php echo $wb_lng['txtArchiveFormReset']; ?>"/>
<input name="submit" type="submit" class="sps_archiveform_btn" value="<?php echo $wb_lng['txtArchiveFormSend']; ?>"/>
</li>
</ul>
</form>
</div>
<hr />
<?php
if (#HERE GOES SOME CODE TO PERFORM THE CHECK!!!#) {
//perform db query
$result = wbQuery("SELECT * FROM wb_news WHERE newsLang=1 ". $_SESSION['storeQuery'] ."ORDER BY newsId DESC LIMIT $start, $perPage");
//count rows
$totalnews = mysql_num_rows($result);
$count = 1;
if($totalnews == 0) {
//no results, say to the user
echo "\t\t\t<div class=\"cil_news_text_big\">\n\t\t\t\t".$wb_lng['txtArchiveNoEntries']."\n\t\t\t</div>\n";
} else {
//we have results, yeeeeeeeeey
while($ROWnews = mysql_fetch_object($result)){
//set link extensions by the news cat
switch ($ROWnews->newsCat) {
case 1:
$newsCat_link = "news";
break;
case 2:
$newsCat_link = "statements";
break;
case 3:
$newsCat_link = "events";
break;
}
//text summary
if (strlen($ROWnews->newsShort) > 0 ) {$newsShortTxt = strip_tags($ROWnews->newsShort);
if ($lang_id==2) { $newsShortTxt = wbTranslit($newsShortTxt); }
} else {
$newsShortTxt = strip_tags($ROWnews->newsFull);
if ($lang_id==2) { $newsShortTxt = wbTranslit($newsShortTxt); }
}
$newsShortTxt = wbShorTxt($newsShortTxt, 210, "... <a title=\"".$wb_lng['txtShowMore']."\" href=\"http://".$_SERVER['HTTP_HOST']."/".$lang_link."/".$newsCat_link."/".$ROWnews->newsId."/full/\">".$wb_lng['txtShowMore']."...</a>");
//show news
echo "\t\t<div class=\"sps_news_list\">\n";
echo "\t\t<div class=\"sps_news_l\">\n";
echo "\t\t\t<img alt=\"\" src=\"http://".$_SERVER['HTTP_HOST']."/content/images/news/_thumb/".$ROWnews->newsImageThumb."\" />\n";
echo "\t\t</div>";
echo "\t\t<div class=\"sps_news_r\">\n";
//transliterate title
if ($lang_id==2) { $newsTitle = wbTranslit($ROWnews->newsTitle); } else { $newsTitle = $ROWnews->newsTitle; }
echo "\t\t\t<div class=\"sps_news_title\">\n\t\t\t\t<a title=\"".$newsTitle."\" href=\"http://".$_SERVER['HTTP_HOST']."/".$lang_link."/".$newsCat_link."/".$ROWnews->newsId."/full/\">".$newsTitle."</a>\n\t\t\t</div>\n";
echo "\t\t\t<div class=\"sps_news_date\">\n\t\t\t\t".$ROWnews->newsDate."\n\t\t\t</div>\n";
echo "\t\t\t<div class=\"sps_news_text_sh\">\n\t\t\t\t".$newsShortTxt."\n\t\t\t</div>\n";
echo "\t\t</div>";
echo "\t\t</div>";
//show <hr /> based on $count
if($totalnews != $count) { echo "\t\t\t<hr />\n"; }
$count++;
}
}
//pagination check
if($totalPages>$perPage) {
?>
<hr />
<div class="sps_pagginate">
<?PHP wbPageTurnFront($PHP_SELF."/".$lang_link."/archive/", $totalPages, $page, $perPage); ?>
</div>
<?php
}
}
?>
有什么想法吗？ Tnx：）
答案 0 :(得分：0)
你可能正在寻找这样的东西吗？：
# start of page:
if (!isset($_SESSION['HasSearched']) {
$_SESSION['HasSearched'] = 0;
}
// ...
// ...
// ...
# when you execute code for displaying search results
# check first if the session has been set:
if ($_SESSION['HasSearched'] == 0) {
# proceed with search code
# then set it to 1 since a search has been performed just now
$_SESSION['HasSearched'] = 1;
} else {
# this means a search had been previously made.
# based on your requirement, no results should be displayed
# since the assumption would be that a new search would be put in place
# code to display fresh page with search form goes here
# reset the session variable's value
$_SESSION['HasSearched'] = 0;
}
如果没有，请告诉我们..
[编辑]根据帖子中的新信息：
你可以尝试一下吗？：
<?php
session_start();
# check if the form was submitted
if (isset($_POST['submit'])) {
//get data from the form
$archFld_1 = $_POST['archiveFld1'];
$archFld_2 = $_POST['archiveFld2'];
$archFld_3 = $_POST['archiveFld3'];
//just some check on fields
if (strlen($archFld_1) > 10) { $archFld_1 = ""; }
if (strlen($archFld_2) > 10) { $archFld_2 = ""; }
//save them as a array and store to session var
$_archValues = array($archFld_3, $archFld_1, $archFld_2);
$_SESSION['storeValues'] = $_archValues;
$newSearch = 0;
} else if (isset($_GET['newSearch'])) {
if ($_GET['newSearch'] == 1) {
# new search requested by user (clicked link at the end (for now))
$_SESSION['storeValues'] = NULL;
$newSearch = 1;
}
} else {
# this may mean that the form was not submitted, nor was the `new search` link clicked
}
# let's check if we are just refreshing or taking from a new page or not
if (isset($_SESSION['storeValues'])) {
//check params for search
//set cat for query
if ($_SESSION['storeValues'][0] > 0) { $valCat = "AND newsCat=". $_SESSION['storeValues'][0] ." "; } else { $valCat = ""; }
//set date for query
if(($_SESSION['storeValues'][1] != "" ) && ($_SESSION['storeValues'][2] == "")) {
$DateStart = $_SESSION['storeValues'][1];
$valDate = " AND STR_TO_DATE(newsDate, '%d-%m-%Y') >= STR_TO_DATE('$DateStart', '%d-%m-%Y') ";
}
if(($_SESSION['storeValues'][2] != "") && ($_SESSION['storeValues'][1]=="")) {
$DateEnd = $_SESSION['storeValues'][2];
$valDate = " AND STR_TO_DATE(newsDate, '%d-%m-%Y') <= STR_TO_DATE('$DateEnd', '%d-%m-%Y') ";
}
if(($_SESSION['storeValues'][1]!="") && ($_SESSION['storeValues'][2] != "")) {
$DateStart = $_SESSION['storeValues'][1];
$DateEnd = $_SESSION['storeValues'][2];
$valDate = " AND STR_TO_DATE(newsDate, '%d-%m-%Y') BETWEEN STR_TO_DATE('$DateStart', '%d-%m-%Y') AND STR_TO_DATE('$DateEnd', '%d-%m-%Y') ";
}
//query string and stire it to session
$archQuery_string = $valCat.$valDate;
$_SESSION['storeQuery'] = $archQuery_string;
} else {
$_SESSION['storeQuery'] = '';
}
?>
<div id="sps_middle">
<div class="sps_cnt">
<div id="sps_middle_ly1">
<div class="sps_cnt_small">
<div class="sps_page_title"><h3><?php echo $wb_lng['txtArchiveTitle']; ?></h3></div>
<div class="sps_pages_cnt" style="padding-top: 10px; float: left; margin-bottom: 15px;">
<div class="sps_middle_col01">
<div style="float: left;">
<p>
<?php echo $wb_lng['txtArchiveInfo']; ?>
</p>
<form action="<?php $PHP_SELF; ?>" method="post" name="archiveForm" class="archiveForm">
<ul>
<li>
<input name="archiveFld1" type="text" id="archiveFld1" value="<?php echo $wb_lng['txtArhivaFld_01']; ?>" />
<input name="archiveFld2" type="text" id="archiveFld2" value="<?php echo $wb_lng['txtArhivaFld_02']; ?>" />
<select name="archiveFld3">
<option value="0"><?php echo $wb_lng['txtArhivaFld_07']; ?></option>
<option value="0" ><?php echo $wb_lng['txtArhivaFld_06']; ?></option>
<option value="1"><?php echo $wb_lng['txtArhivaFld_03']; ?></option>
<option value="2"><?php echo $wb_lng['txtArhivaFld_04']; ?></option>
<option value="3"><?php echo $wb_lng['txtArhivaFld_05']; ?></option>
</select>
</li>
<li style="float: right;">
<input name="reset" type="reset" class="sps_archiveform_btn" value="<?php echo $wb_lng['txtArchiveFormReset']; ?>"/>
<input name="submit" type="submit" class="sps_archiveform_btn" value="<?php echo $wb_lng['txtArchiveFormSend']; ?>"/>
</li>
</ul>
</form>
</div>
<hr />
<?php
//pagination start
$page = $_GET['id'];
$perPage = 10;
$result = wbQuery("SELECT * FROM wb_news WHERE newsLang=1 ". $_SESSION["storeQuery"] ."ORDER BY newsId DESC");
$totalPages = mysql_num_rows($result);
if (!$page) {
$page = 1;
}
$start = ($page - 1)*$perPage;
if ($newSearch == 0) {
//perform db query
$result = wbQuery("SELECT * FROM wb_news WHERE newsLang=1 ". $_SESSION['storeQuery'] ."ORDER BY newsId DESC LIMIT $start, $perPage");
//count rows
$totalnews = mysql_num_rows($result);
$count = 1;
if($totalnews == 0) {
//no results, say to the user
echo "\t\t\t<div class=\"cil_news_text_big\">\n\t\t\t\t".$wb_lng['txtArchiveNoEntries']."\n\t\t\t</div>\n";
} else {
//we have results, yeeeeeeeeey
while($ROWnews = mysql_fetch_object($result)){
//set link extensions by the news cat
switch ($ROWnews->newsCat) {
case 1:
$newsCat_link = "news";
break;
case 2:
$newsCat_link = "statements";
break;
case 3:
$newsCat_link = "events";
break;
}
//text summary
if (strlen($ROWnews->newsShort) > 0 ) {$newsShortTxt = strip_tags($ROWnews->newsShort);
if ($lang_id==2) { $newsShortTxt = wbTranslit($newsShortTxt); }
} else {
$newsShortTxt = strip_tags($ROWnews->newsFull);
if ($lang_id==2) { $newsShortTxt = wbTranslit($newsShortTxt); }
}
$newsShortTxt = wbShorTxt($newsShortTxt, 210, "... <a title=\"".$wb_lng['txtShowMore']."\" href=\"http://".$_SERVER['HTTP_HOST']."/".$lang_link."/".$newsCat_link."/".$ROWnews->newsId."/full/\">".$wb_lng['txtShowMore']."...</a>");
//show news
echo "\t\t<div class=\"sps_news_list\">\n";
echo "\t\t<div class=\"sps_news_l\">\n";
echo "\t\t\t<img alt=\"\" src=\"http://".$_SERVER['HTTP_HOST']."/content/images/news/_thumb/".$ROWnews->newsImageThumb."\" />\n";
echo "\t\t</div>";
echo "\t\t<div class=\"sps_news_r\">\n";
//transliterate title
if ($lang_id==2) { $newsTitle = wbTranslit($ROWnews->newsTitle); } else { $newsTitle = $ROWnews->newsTitle; }
echo "\t\t\t<div class=\"sps_news_title\">\n\t\t\t\t<a title=\"".$newsTitle."\" href=\"http://".$_SERVER['HTTP_HOST']."/".$lang_link."/".$newsCat_link."/".$ROWnews->newsId."/full/\">".$newsTitle."</a>\n\t\t\t</div>\n";
echo "\t\t\t<div class=\"sps_news_date\">\n\t\t\t\t".$ROWnews->newsDate."\n\t\t\t</div>\n";
echo "\t\t\t<div class=\"sps_news_text_sh\">\n\t\t\t\t".$newsShortTxt."\n\t\t\t</div>\n";
echo "\t\t</div>";
echo "\t\t</div>";
//show <hr /> based on $count
if($totalnews != $count) { echo "\t\t\t<hr />\n"; }
$count++;
}
}
//pagination check
if($totalPages>$perPage) {
?>
<hr />
<div class="sps_pagginate">
<?PHP wbPageTurnFront($PHP_SELF."/".$lang_link."/archive/", $totalPages, $page, $perPage); ?>
</div>
<?php
}
}
# placing this code for your testing: i'm currently thinking that you'll need a user-ended trigger that a new search is desired
echo '<br /><a href=\'' . $_SERVER['PHP_SELF'].'?newSearch=1' . '\'> Perform a new search </a><br />';
?>
我想我可能会有点困惑，但是如果你不介意的话就给它一个机会。