所以我對每個循環都有幾個,我試圖在最後回顯$ sql的值。我實際上使用它與PDO,但回聲顯示的問題。PDO和For Each Loop:輸出錯誤的變量
$values = "1,2";
$values = explode(',',$values);
$set1 = "2,4";
$set1 = explode(',',$set1);
$set2 = "3,2";
$set2 = explode(',',$set2);
foreach($set1 as $set1val){
if ($set1val==2) {
$sql = "sql one runs";//should run on 1st iteration since 2 will equal 2
echo 'hi';//should echo on 1st iteration since 2 will equal 2
}
}
foreach($set2 as $set2val){
if ($set2val==2) {
$sql = "sql two runs";//should run on 2nd iteration since 2 will equal 2
echo 'bye';//should echo on 2nd iteration since 2 will equal 2
}
}
foreach($values as $value){
echo $sql;
$stmt = $db->query($sql);
}
//The Result Output
'hi' 'bye' 'sql two runs' 'sql two runs' <-- doesn't echo 'sql one runs'
//The Output Required
'hi' 'bye' 'sql one runs' 'sql two runs' <-- Works great, but not outputting this
我怎樣才能使它輸出所需的輸出?任何想法如何做到這一點,所以正確的語句是回聲/運行?
你在這裏做什麼?循環訪問數組只是爲了爲單個值做某些事情是一種無意義的模式。另外,你是否試圖...動態地決定運行哪個查詢?或者這個代碼應該做什麼? – deceze 2012-02-02 00:39:36
@deceze我認爲我比我應該更復雜的東西。我試圖動態地決定使用同一個變量名運行哪個查詢,希望它能夠考慮到$ sql變量被激活的順序並按順序執行它們,而不是覆蓋之前的運行並運行相同的查詢兩次。這有任何意義嗎? – Wonka 2012-02-02 03:58:56