我有一個分頁腳本鏈接到一個MySQL查詢，我可以過濾。當結果未被過濾並且所有行都顯示時，我有下一個鏈接，指出「？pg = 2」等等（取決於多少結果等）。一旦我過濾了我想要顯示的內容，我的URL包含其他參數，如？certifications = VALUE & state = VALUE。獲取所有URL參數除了一個

這些行處理我的分頁鏈接。

echo "<a href='?pg=".($pg-1)."' class='paginationButton'>PREVIOUS</a> \n"; 

echo "<a href='?pg=".($pg+1)."' class='paginationButton'>NEXT</a> \n";

我向每個添加了$ _SERVER ['QUERY_STRING']以嘗試將url參數添加到鏈接。它的工作原理，但它也每次被點擊時（基本上如果下一個被點擊了兩次它呢？認證= VALUE &狀態= VALUE & PG = 3 & PG = 2。

我怎樣才能使增加的？PG參數如果& pg已經設置，它不會在URL中複製它？

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FULL代碼在這裏

$start=0; 
$limit=3; 

if(isset($_GET['pg'])) 
{ 
$pg=$_GET['pg']; 
$start=($pg-1)*$limit; 
} 
else { 
$pg = 1; 
} 
$sql = mysql_query($query); 

$conditions = "SELECT * FROM pilotOperators WHERE 1=1"; 
# append condition for signage (if required) 
if(isset($_GET['signage'])) { 
$conditions .= " AND signage='1'"; 
} 
# append condition for certifications (if required) 
    if(isset($_GET['certifications'])) { 
    $certifications = mysqli_real_escape_string($conn,$_GET['certifications']); 
    $conditions .= " AND certifications='$certifications'"; 
} 
# append condition for state (if required) 
if(isset($_GET['state'])) { 
if($_GET['state'] != "Select State") { 
    $state = mysqli_real_escape_string($conn,$_GET['state']); 
    $conditions .= " AND state='$state'"; 
} 
} 
$conditions .= " Limit $start, $limit"; 
$result = mysqli_query($conn, $conditions); 

while($row = mysqli_fetch_array($result)) 
{ 
echo "\n <table border='0' class='resultTable' width='75%'> \n"; 
echo "<tr> \n"; 
echo "<td width='120px'>ID: </td> \n"; 
echo "<td>" . $row['id'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Name: </td> \n"; 
echo "<td>" . $row['name'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Phone: </td> \n"; 
echo "<td>" . $row['phone'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Alt. Phone: </td> \n"; 
echo "<td>" . $row['alt_phone'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Fax: </td> \n"; 
echo "<td>" . $row['fax'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Email: </td> \n"; 
echo "<td>" . $row['email'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Website: </td> \n"; 
echo "<td><a href='" . $row['website'] . "' target='_blank'>" . $row['website'] . "</a></td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>City: </td> \n"; 
echo "<td>" . $row['city'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>State: </td> \n"; 
echo "<td>" . $row['state'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Certifications: </td> \n"; 
echo "<td>" . $row['certifications'] . "</td> \n"; 
echo "</tr> \n"; 
echo "<tr> \n"; 
echo "<td>Top Sign: </td> \n"; 
echo "<td>"; 
if($row['signage'] = 1) { 
echo "Has Top Sign"; 
} 
else { 
echo "Top Sign Not Listed"; 
} 
echo "</td> \n"; 
echo "</tr> \n"; 
echo "</table> \n\n"; 
} 

$countconditions = "SELECT * FROM pilotOperators WHERE 1=1"; 
# append condition for signage (if required) 
if(isset($_GET['signage'])) { 
    $countconditions .= " AND signage='1'"; 
} 
# append condition for certifications (if required) 
if(isset($_GET['certifications'])) { 
    $certifications = mysqli_real_escape_string($conn,$_GET['certifications']); 
    $countconditions .= " AND certifications='$certifications'"; 
} 
# append condition for state (if required) 
if(isset($_GET['state'])) { 
if($_GET['state'] != "Select State") { 
    $state = mysqli_real_escape_string($conn,$_GET['state']); 
    $countconditions .= " AND state='$state'"; 
} 
} 
$rows = mysqli_num_rows(mysqli_query($conn, $countconditions)); 

$total=ceil($rows/$limit); 
echo "<div id='paginationLinks'> \n"; 
if($pg>1) 
{ 
echo "<a href='?pg=".($pg-1)."&".$_SERVER['QUERY_STRING']."' class='paginationButton'>PREVIOUS</a> \n"; 
} 
if($pg!=$total) 
{ 
echo "<a href='?pg=".($pg+1)."&".$_SERVER['QUERY_STRING']."' class='paginationButton'>NEXT</a> \n"; 
} 

echo "<ul class='page'> \n"; 
for($i=1;$i<=$total;$i++) 
{ 
if($i==$pg) { echo "<li class='current'>".$i."</li> \n"; } 

else { echo "<li><a href='?id=".$i."'>".$i."</a></li> \n"; } 
} 
echo "</ul> \n"; 
echo "</div> \n"; 
mysqli_close($con);

來源

2015-04-30 Jesse Elser

看看'parse_str'它是一個PHP函數，用於將querystrings解析爲關聯數組。當你有這個時，你可以簡單地替換數組中的pg條目，然後使用'http_build_query'將其字符串化回查詢字符串。看看： https://php.net/parse_str – EJTH

$q = http_build_query(array_merge($_GET, ["pg" => $pg+1])); 

<a href="?$q">..</a>

來源

2015-04-30 19:24:40 jancha

簡單的解決方案，像魅力一樣工作。謝謝！ –

嘗試更換你：喜歡的東西

href='?pg=".($pg+1)."&".$_SERVER['QUERY_STRING']."'

：

$allParams = $_GET; 
$allParams['pg'] = $pg+1; 
$queryString = '?'; 
foreach ($allParams as $param=>$param_val) { 
    if ($queryString != '?') $queryString .= '&'; 
    $queryString .= $param.'='.urlencode($param_val); 
} 
... 
echo "<a href='$queryString' class=...

來源

2015-04-30 19:21:46 Alex

剛剛嘗試過。當我點擊鏈接的URL參數變成這樣：？pg =？pg = 1 –

堅持我的錯誤讓我嘗試別的。我留下了一些不應該是的網址:) –

您可以從您的查詢字符串刪除PG，然後再更換。如果它不在那裏，你不會刪除它，但仍然可以取代它。

preg_replace('/(^|&)pg=[0-9]+&/','\1',$_SERVER['QUERY_STRING'].'&').'pg='.($pg+1)

這樣做是：

貼&在查詢字符串的結尾結束 - 我們需要這一點。
查找PG = ###以下字符串的開頭或&
刪除在PG = $ PG + 1查詢字符串的結束時，PG = ###
粘性。

爲什麼要檢查&之前和之後？我不想無意中替換一個像'apg = 54'的變量

來源

2015-04-30 19:27:51 kainaw

FULL代碼在這裏

回答

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