小编Sof*_*rus的帖子

请帮助我,我需要合并多个数组,然后按数组值计数排序.以下是问题:

$array1 = array("abc", "def", "ghi", "jkl", "mno");
$array2 = array("mno", "jkl", "mno", "ghi", "pqr", "stu");
$array3 = array_merge($array1, $array2);
$array4 = ???

print_r($array4);

我想要这样的回报$array4:

Array
(
[0] => mno
[1] => ghi
[2] => jkl
[3] => abc
[4] => def
[5] => pqr
[6] => stu
)

请帮我从我的DB字段创建一个数组.该字段的记录以逗号分隔.以下是插图:

ID | article_title_fld         | article_tags_fld                     |
----------------------------------------------------------------------
1  | Learn PHP                 | PHP, coding, scripting               |
3  | Javascript Tutorial       | Javascript, scripting, tutorial      |
4  | Styling with CSS          | CSS, tutorial, web design            |

我想收集article_tags_fld中的所有记录,然后将其放入1个数组中.也许我将它命名为$ array1,打印输出如下:

Array
(
[0] => PHP
[1] => coding
[2] => scripting
[3] => Javascript
[4] => scripting
[5] => tutorial
[6] => CSS
[7] => tutorial
[8] => web design
)