A _php example of the filtering of two-dimensional PHP arrays and three-dimensional arrays

Nonsense not much said, directly to everyone to paste code, the specific code as follows:

<?php
$arr = [
[,,,,],
[,,,,]
];
$arr = [
' list ' => [
[,,,],
[,,,],
[,,,]
;
] $arr = [
' list ' => [
[,,,],
[,,,],
[,,,]
]
];
$res = Array_map (function ($arr) {return
array_filter ($arr, function ($v) {return
$v!==;}
);
ARR);
$res = Array_map (function ($val) {return
array_filter ($val, function ($v) {return
!in_array (, $v);
});
}, $arr);
$res = [];
Array_walk ($arr, function ($val, $key) use (& $res) {
$res [$key] = Array_filter ($val, function ($v) {
return !in_array (, $v);
});
Var_dump ($res);
Var_dump ($res);

The following section of code to introduce PHP three-dimensional array variable two-dimensional array

<?php
$result = Array (0 => array (0 => array (bid => 41,brealname => ' We Instructors ', CID => 41,crealname ' We Instructors '),
1 => Array (0 => array (bid => 6,brealname => ' Nothing ', cid => 19,crealname ' Zhang Fish '))
;
The original array
print_r ($result);
echo "<br/>";
The first method:
foreach ($result as $key => $v) {
$new _arr[]= $v [0];
}
Echo ' <pre> ';
Print_r ($new _arr);
The second method
//initialization of $ARR2 
$arr 2=array (); 
Loop traversal three-dimensional array $arr3 
foreach ($result as $value) { 
foreach ($value as $v) { 
$arr 2[]= $v; 
} 
}
Destruction of $arr3 
unset ($result, $value, $v);
echo "<br/s>";
echo "The second method:";
Echo ' <pre> ';
Print_r ($arr 2);
? >

About PHP two-dimensional array and three-dimensional array of filtering small series to introduce so many people, I hope to help you!