將字符串保存到數組

Question

我有一個查詢，它在我的貸款表中查找前10個最借貸的書籍，但是我想將這10個值存儲到一個數組中，以便我可以再次使用該數組。這裏是我到目前爲止的代碼...感謝您提前提供任何幫助！

//select a database to work with 
$selected = mysql_select_db("ds2",$dbhandle) 
or die("Could not select examples"); 

//execute the SQL query and return records 
$result = mysql_query("SELECT book.title, book.book_id, count(book.book_id) AS  count_book_id, loan.book_id FROM book 
     INNER JOIN loan ON book.book_id = loan.book_id 
     GROUP BY book.book_id ASC 
     ORDER BY count(book.book_id) DESC"); 

$titles = array(); 

while($row = mysql_fetch_array($result)) 
{ 
echo $row['title']; 
echo "<br>"; 
} 

echo "<br><br>"; 

for($index = 1; $index <= 10; $index++) 
{ 
array_push($titles,$result[$row]); 
print_r($titles); 
echo "<br>"; 

} 

Answer 1

嘗試，

while($row = mysql_fetch_array($result)) 
    { 
     echo $row['title']; 
     $arr[] = $row['title']; //Store in an array   
     echo "<br>"; 
    } 

    echo "<br><br>"; 

    //Since you need only 10 values, else this for loop is not required. 
    for($index = 1; $index <= 10; $index++) 
     $titles[] = $arr[$index]['title']; 

    unset($arr); //unset the original array if you don't need it anymore. 
    print_r($titles); //Print top 10 values 
    echo "<br>"; 

Answer 2

不是echo $row['title']您可以使用下面的代碼，並將其存儲到一個數組

$titles[] = $row['title']; 

使用陣列概念後訪問它們。

$titles[0]; // 1st item 
$titles[1]; //2nd item 

你甚至可以使用foreach循環遍歷所有項目。

foreach($titles[] as $title) 
    echo $title; 

下面將讓你得到一個逗號分隔字符串（只爲您的信息，如果你需要它）

$comma_separated_titles = implode(",", $titles); 

Answer 3

應填寫您的數組中循環，而不是在單獨的循環中：

$count = 0; 
while($row = mysql_fetch_array($result)) 
{ 
    echo $row['title']; 
    echo "<br>"; 
    if ($count < 10) 
    { 
    array_push($titles, $row); 
    } 
    $count++; 
}