如何循環訪問數組並向mysql寫入非重複數據？

Question

我有一個名爲MyArray的數組我想將其數據插入到MySQL中，但首先需要檢查它是否已存在於mysql中。任何一個可以告訴我如何通過數組循環以及如何引用數組中的每個變量，然後將這些數據插入到MySQL？

$MyArray[] = array( 
     "usernameVar" => htmlspecialchars($usernameVar), 
     "profPic" => htmlspecialchars($profPic), 
     "idVar" => htmlspecialchars($idVar), 
     "standardResolution" => htmlspecialchars($standardResolution), 
     "imagePageLink" => htmlspecialchars($imagePageLink), 
     "createdTimeVal" => htmlspecialchars($createdTimeVal), 
     "imageTags" => htmlspecialchars($imageTags), 
); 

$MyArray = array_reverse($MyArray); 

//now i need to loop through array and insert non duplicate data in to mysql 

$result = mysql_query("SELECT imageUrl FROM mytable WHERE imageUrl = '$standardResolution'"); 
if (!$result) { 
    die('Invalid query: ' . mysql_error()); 
} 
if(mysql_num_rows($result) == 0) { 
    $j++; 
    echo "<a href='".$imagePageLink."'><img src='".$standardResolution."' width='150' height='150' border='0'></a><br> "; 

    // row not found, do stuff... 
    echo "New Users(".$i."):"; 
    echo "<br>User Name(".$i."):".$usernameVar; 

    $result2 = mysql_query("INSERT INTO mytable (ID, username, profile_picture, instaId, imageUrl,imagePageURL, CreatedTime, imageTags, date) VALUES('$ID','$usernameVar','$ProfilePicVar','$idVar','$standardResolution','$imagePageLink','$createdTimeVal','$imageTags',NOW())"); 

    if (!$result2) { 
     die('Invalid query: ' . mysql_error()); 
    } 
} 
else 
{ 
    $m++; 

    // do other stuff... 
    echo "Already Added Users(".$i."):"; 
    echo "<br>User Name(".$i."):".$usernameVar; 
}; 

Answer 1

見INSERT INTO ...對重複密鑰更新...語法：

http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html

Answer 2

你可以通過在PHP中使用的foreach數組循環：

foreach($MyArray as $key=>$value){ 
    .... 
} 

插入從數組中稍微複雜一點，但原則上，你循環數組中的每個變量並創建一個字符串。

foreach($MyArray as $key=>$value){ 
    $names .= $key.","; 
    $values .= "'$value',"; 
} 
$names = substr($names, 0, strlen($names) - 1); 
$values = substr($values, 0, strlen($values) - 1); 

然後執行：

mysql_query("INSERT INTO table ($names) VALUES($values)");