Data sorted by Maximum value

Array (    0 = = Array    (        ' id ' = = 1,            ' level ' = 6,            ' layer ' = 1        ),    ' 1 ' = = array    (        ' id ' = = 15055,        [level] = 5,        [layer] = 2    ),    ' 2 ' = = Array    (        ' id ' =& Gt 15056,        ' level ' = 5,        ' Layer ' and ' 3 '    ,    ' 3 ' = = Array    (        ' id ' = = 15057,        ' Level ' = 4,        ' layer ' + 4     ),    ' 4 ' = = Array    (        ' id ' = = 15058,        ' level ' = 4,< c28/> ' layer ' = 5    ))

If level is equal, the array with the larger layer is taken
The final result is this:
Array
(
0 = Array
(
' id ' = 1,
' Level ' = 6,
' Layer ' = 1
),



' 1 ' = = Array
(
' id ' = 15056,
' Level ' = 5,
' Layer ' = 3
),



' 2 ' = = Array
(
' id ' = 15058,
' Level ' = 4,
' Layer ' = 5
)

)

Reply to discussion (solution)

What's the problem? Bubble up a little bit ....

You can use the Usort http://php.net/manual/zh/function.usort.php function.

$a = Array (        ' id ' = = 1,            ' level ' = 6,            ' layer ' = 1        ),     ' 1 ' = array< c7/> (        ' id ' = = 15055,        ' level ' = + 5,        ' layer ' = 2    ),     ' 2 '    = = Array (        ' id ' = > 15056,        ' level ' = 5,        ' layer ' + 3    ),     ' 3 ' = = Array    (        ' id ' = = 15057,        ' Level ' = 4,        ' layer ' and ' 4 '     ,     ' 4 ' = = Array    (        ' id ' = = 15058,        ' level ' = 4,< c28/> ' layer ' + 5    ), $r = Array (), foreach ($a as $v) {  if (isset ($r [$v [' level]]) $r [$v [' level ']] = $v; 
  if ($r [$v [' Level ']][' layer '] < $v [' layer '] $r [$v [' level '] = $v;} $r = Array_values ($r); Var_export ($R);

Array (  0 = =   Array (    ' id ' = = 1,    ' level ' = + 6,    ' layer ' = 1,  ),  1 = =   Array (    ' id ' = = 15056,    ' level ' = 5,    ' layer ' = ' 3, '  ),  2 = =   Array (    ' id ' = 15058,    ' level ' = 4,    ' layer ' = + 5,  ),

The landlord's array from 5 elements into 3, which can be achieved by the sort?
Post code, look!

What's the problem? Bubble up a little bit ....

You can use the Usort http://php.net/manual/zh/function.usort.php function.

The landlord's array from 5 elements into 3, which can be achieved by the sort?
Post code, look!

What's the problem? Bubble up a little bit ....

You can use the Usort http://php.net/manual/zh/function.usort.php function.

Haha, look wrong, I thought he was going to sort.

