从多维数组内爆数据

I'm a novice at PHP and I need a quick solution to the following problem but can't seem to come up with one:

我是一个PHP新手，我需要一个快速的解决方案来解决下面的问题，但是我似乎不能想出一个:

I have a multi-dimensional array like so

我有一个这样的多维数组。

Array
(
    [0] => Array
        (
            [blogTags_id] => 1
            [tag_name] => google
            [inserted_on] => 2013-05-22 09:51:34
            [inserted_by] => 2
        )

    [1] => Array
        (
            [blogTags_id] => 2
            [tag_name] => technology
            [inserted_on] => 2013-05-22 09:51:34
            [inserted_by] => 2
        )
)

I want to use the implode() to somehow return a comma-separated string containing values of tag_name key like so.

我想使用内爆()来以某种方式返回一个以逗号分隔的字符串，其中包含像这样的tag_name键的值。

google, technology

Is it possible to achieve this effect with the said function? If not then please suggest an alternate solution.

是否可以用上述函数实现这个效果?如果没有，请建议另一种解决办法。

7 个解决方案

#1

127

Quite simple:

很简单:

$input = array(
  array(
    'tag_name' => 'google'
  ),
  array(
    'tag_name' => 'technology'
  )
);

echo implode(', ', array_map(function ($entry) {
  return $entry['tag_name'];
}, $input));

http://3v4l.org/ltBZ0

and new in php v5.5.0, array_column:

在php v5.5.0中新增array_column:

echo implode(', ', array_column($input, 'tag_name'));

#2

join(',', array_map(function (array $tag) { return $tag['tag_name']; }, $array))

#3

array_map is a call back function, where you can play with the passed array. this should work.

array_map是一个回调函数，您可以在其中使用传递的数组。这应该工作。

$str = implode(',', array_map(function($el){ return $el['tag_id']; }, $arr));

#4

very simple go for this

这很简单。

$str;
foreach ($arrays as $arr) {
$str .= $arr["tag_name"] . ",";
}
$str = trim($str, ',');//removes the final comma

#5

Although this question is related to string conversion, I stumbled upon this while wanting an easy way to write arrays to my log files. If you just want the info, and don't care about the exact cleanliness of a string you might consider:

尽管这个问题与字符串转换有关，但我无意中发现了这个问题，并希望有一种简单的方法将数组写入我的日志文件。如果你只是想要信息，而不关心你可能考虑的字符串的确切清洁度:

json_encode($array)

#6

If you want "tag_name" with associated "blogTags_id" use: (PHP > 5.5)

如果您希望“tag_name”与关联的“blogTags_id”关联，请使用:(PHP > 5.5)

$blogDatas = array_column($your_multi_dim_array, 'tag_name', 'blogTags_id');
echo implode(', ', array_map(function ($k, $v) { return "$k: $v"; }, array_keys($blogDatas), array_values($blogDatas)));

#7

In this situation implode($array,','); will works, becasue you want the values only. In PHP 5.6 working for me.

在这种情况下内爆(美元数组,',');will可以工作，因为您只需要值。在PHP 5.6中为我工作。

If you want to implode the keys and the values in one like :
blogTags_id: 1
tag_name: google

如果您想要内爆键和值，比如:blogTags_id: 1 tag_name:谷歌。

$toImplode=array();
foreach($array as $key => $value) {
$toImplode[]= "$key: $value".'<br>';
}
$imploded=implode('',$toImplode);

Sorry, I understand wrong, becasue the title "Implode data from a multi-dimensional array". Well, my answer still answer it somehow, may help someone, so will not delete it.

抱歉，我理解错了，因为标题是“多维数组内爆数据”。好吧，我的答案还是要回答，可能会帮助别人，所以不会删除它。

#1

127