将PHP数组更改为单独的字符串

Question

我有一个从sql返回的数组，我需要将它们分成单独的字符串以在页面上使用。 它不在数据库的单行中，并列出了用户拥有的所有文件夹。 约翰数据库中的示例有一个红色文件夹，绿色文件夹，蓝色文件夹。 我运行查询并使用fetchAll返回john的文件夹。 我有一个数组。 我可以回显数组，它输出redfoldergreenfolderbluefolder

如何获取数组并将其拆分为单独的字符串？

PHP代码

  $query = "SELECT album_name FROM albums WHERE username = :username";
    $query_params = array(
    ':username' => $email
    );

    try {
        $stmt   = $db->prepare($query);
        $result = $stmt->execute($query_params);
    }
    catch (PDOException $ex) {
        echo 'Database Error, please try again.';
    }

    $rows = $stmt->fetchAll();

    foreach ($rows as $row) {
    $post             = array();
    $post["album_name"] = $row["album_name"];
    echo $post["album_name"];  // This just lists all albums together no spaces or commas

    }

    $text = implode(",", $post);
    echo $text;  // This just outputs the last item (bluefolder)

Answer 1

以下需要更正：

foreach ($rows as $row) {
    $post             = array();
    $post["album_name"] = $row["album_name"];
    echo $post["album_name"];  // This just lists all albums together no spaces or commas

}

$text = implode(",", $post);
echo $text;  // This just outputs the last item (bluefolder)

将以上更改为：

$post = array();
foreach( $rows as $row )
{
//  $post = array(); // This line should not be here . It should be outside and above foreach
//  The below echo is for test purpose . Comment it if you don't need it
    echo $row["album_name"] ,' ';
//  $post["album_name"] = $row["album_name"]; // This keeps assigning $row["album_name"] to same index "album_name" of $post . Eventually you will have only one value in $post
    $post[] = $row["album_name"];
}

// $text = implode(",", $post); // With coma's as separator
$text = implode(" ", $post); // With blank's as separator
echo 'John has ' , $text;

Answer 2

尝试print_r($post); 在最后一行。

Answer 3

之所以只显示最后一个文件夹，是因为您在循环开始时执行了“ $ post = array（）”。 每次都会重置数组...只需将其移出循环并将其置于foreach之上即可。

1 ： http ： //php.net/manual/en/function.im之所以只显示最后一个文件夹，是因为您在循环开始时执行了“ $ post = array（）”。 每次都会重置数组...只需将其移出循环并将其置于foreach之上即可。

编辑：

这样尝试：

$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

$post = array();

foreach ($rows as $key => $folder) {
    array_push($post, $folder)
}

$text = implode(",", $post);

Answer 4

请在每个的旁边使用print_r（$ text），然后您将得到所有带有逗号的ar​​ry，并从此处删除$ post = arry并放在foreach的上方。 我正在尝试帮助您，请帮助

谢谢阿南德

Answer 5

尝试这个：

$post  = array();
foreach ($rows as $row) {

array_push($post, 'album_name', $row["album_name"]);

}

$text = implode(",", $post);
echo $text; 

没有assoc ver：

$post  = array();
foreach ($rows as $row) {

$post[] = $row["album_name"];

}

$text = implode(",", $post);
echo $text;