How PHP determines if a multidimensional array contains null values

Help! For example, if a column appears empty once, exclude this column, how to implement

Reply to discussion (solution)

Is that so??

$arr =array (' Listid ' =>array (', 5 '), ' title ' =>array (', ', '), ' type ' =>array (' ', ' I have '), ' Count ' =>array (', 3) , ' content ' =>array (' none ', ' none '), foreach ($arr as $k + $v) {if (Is_array ($v)) {foreach ($v as $v 2) {if ($v 2== ") {unset ($ arr[$k]);}}} echo "
";p Rint_r ($arr); echo"
/*array (    [content] = = Array        (            [0] = = None            [1] = none        )) */

I don't think you mean 2 floor. Answer, your data structure is a like the article is a few articles is not all the first data is removed only left each of the second key value of a

A foreach loop array, which finds that the null value first =null the line and then unset out

3 floor is what I want to express, in the above example! is to keep the second key value, because it all has a value, how to do it?

It is recommended to post your array and the final result. and explain the principle.

Print_ ($_post);
Results:

Array
(
[Listid] = = Array
(
[0] = 1
[1] = 5
[2] = 4
)

[title] = = Array
(
[0] = =
[1] = 33
[2] = 39
)

[Type] = = Array
(
[0] = = u
[1] = = T
[2] = =
)

[Count] = Array
(
[0] = =
[1] = 7
[2] = =
)

[content] = = Array
(
[0] = = None
[1] = = None
[2] = = None
)

)

$arr =array (    ' listid '  = = Array (', 5 '),    ' title '   = = = Array (', ', ') ',    ' type '    = = Array (' , ' I have '),    ' count ' = =   Array (', 3),    ' content ' = = Array (' None ', ' none '),); $t = Call_user_func_array (' Array_ Map ', Array_merge (array (null), $arr)), foreach ($t as $k = = $v) if (Array_diff ($v, Array ("))! = $v) unset ($t [$k]); $t = Cou NT ($t) = = 1? Array_chunk (current ($t), 1): Call_user_func_array (' Array_map ', Array_merge (array (null), $t));p Rint_r (array_combine (Array_keys ($arr), $t));

Array ([    Listid] + = Array (            [0] = 5        )    [title] = = Array        (            [0]        = )    [Type] = = Array        (            [0] = = I have        )    [count]        /= Array (            [0] = 3        )    [content] = = Array        (            [0] = = none        ))

Thank you for the moderator answer! You've got the results you want.
Now, if there is not a complete set of values in the $arr, there will be an error.

Thank you, it's settled.

