我正在與Interspire購物車以及我狡猾的編碼技巧再次交鋒。 :)爲什麼這個PHP函數不能傳遞所有的變量數據?
我的目標是創建一個類似於BHphotovideo.com首頁上類別塊的類別列表(崇高?)。 :)我相信這是一款即使免費購物車也能提供的功能,但不會在ISC中預建。我只想要一個包含父類別下的子類別的所有頂級類別的可點擊列表。下面的代碼的偉大工程,當我把它粘貼到空白的PHP文件,但我需要將此融入ISC所以鏈接的點擊能和上市是面板:
<?php
// Make a MySQL Connection
$cn = mysql_connect("localhost", "mydbuser", "password") or die(mysql_error());
mysql_select_db("mydb") or die(mysql_error());
$rs = mysql_query("SELECT categoryid, catparentid, catname FROM isc_categories", $cn)
or die(mysql_error());
$childrenTree = array(); //Will store an array of children for each parent
$categoryNames = array(); //Will store category name for each id
//We fill $childrenTree and $categoryNames from database
while($row = mysql_fetch_array($rs)){
list($id, $parent_id, $category) = $row;
$categoryNames[(string)$id] = $category;
$parent_id = (string)$parent_id;
if(!array_key_exists($parent_id, $childrenTree))
$childrenTree[$parent_id] = array();
$childrenTree[$parent_id][] = (string)$id;
}
//Main recursive function. I'll asume '0' id is the root node
function renderTree($parent = "0"){
global $categoryNames;
global $childrenTree;
if($parent != "0") echo "<li> ", $categoryNames[$parent], "\n";
$children = $childrenTree[$parent];
if(count($children) > 0){ //If node has children
echo "<ul>\n";
foreach($children as $child)
renderTree($child);
echo "</ul>\n";
}
if($parent != "0") echo "</li>\n";
}
renderTree(); //This renders the hierarchical tree
?>
下面是我的最後一個(很多)試圖將這些代碼集成爲一個獨立的ISC面板。我只是不知道該去哪裏。我用下面的代碼得到的錯誤是:注意:未定義的變量:第31行的/includes/display/HomeCategoryList.php中的childrenTree
但是,childrenTree在_getcats函數中被定義爲$ categorynames,腳本不會沒有抱怨,所以我會認爲它將$ categorynames的數據傳遞給renderTree函數,而不是$ childrenTress。它是否正確?
對於原始代碼,函數_getcats不存在,並且不是必需的,但是下面將它添加到面板的腳本迫使我將該代碼放入函數中。另外,如果我將數據庫查詢語法更改爲與其他ISC文件中通常使用的語法相匹配,那麼該腳本會抱怨此行的未定義變量:list($ id,$ parent_id,$ category)= $ row。我不知道爲什麼當查詢應該返回相同的結果。
<?php
CLASS ISC_HOMECATEGORYLIST_PANEL extends PANEL
{
public function SetPanelSettings()
{
$GLOBALS['SideCategoryListTypeClass'] = 'SideCategoryListClassic';
$GLOBALS['SNIPPETS']['HomeCategoryList'] = $this->renderTree();
}
function _getcats(){
$rs = mysql_query("SELECT categoryid, catparentid, catname FROM isc_categories")
or die(mysql_error());
$childrenTree = array(); //Will store an array of children for each parent
$categoryNames = array(); //Will store category name for each id
while($row = mysql_fetch_array($rs)){
list($id, $parent_id, $category) = $row;
$categoryNames[(string)$id] = $category;
$parent_id = (string)$parent_id;
if(!array_key_exists($parent_id, $childrenTree))
$childrenTree[$parent_id] = array();
$childrenTree[$parent_id][] = (string)$id;
}
}
function renderTree($parent = "0"){
$this->_getcats();
if($parent != "0")echo "<li> ", $categoryNames[$parent], "\n";
$children = $childrenTree[$parent];
if(count($children) > 0){ //If node has children
echo "<ul>\n";
foreach($children as $child)
renderTree($child);
echo "</ul>\n";
}
if($parent != "0") echo "</li>\n";
}
}
如果您發現任何問題,我忽略了或認爲您可能知道問題所在,請指出正確的方向。我已經呆了好幾天了。 :)
謝謝!