[php] Zamiana wartosci i wyswietlenie tylko jednej Opcje

[AndyPSV]

Jak zrobic by jesli _from jest rowne _to badz _to jest rowne _from --- by wybral tylko ten \z ID wyzszym?

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			array (
  0 => 
  array (
    'id' => '8',
    '_from' => '2',
    '_to' => '1',
    'date' => '2018-10-15 15:51:07',
    'message' => 'ccccccxxxxx',
    'read' => '0',
    'feedback' => '0',
    'cnt' => '3',
  ),
  1 => 
  array (
    'id' => '6',
    '_from' => '1',
    '_to' => '2',
    'date' => '2018-10-15 15:47:01',
    'message' => 'zzzzzzz1',
    'read' => '1',
    'feedback' => '0',
    'cnt' => '1',
  ),*/
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[werdan]

Poniżej działający przykład:

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<?php
 
 
$a = [
    [
    'id' => '8',
    '_from' => '2',
    '_to' => '2',
    'date' => '2018-10-15 15:51:07',
    'message' => 'ccccccxxxxx',
    'read' => '0',
    'feedback' => '0',
    'cnt' => '3',
    ],
    [
    'id' => '6',
    '_from' => '2',
    '_to' => '2',
    'date' => '2018-10-15 15:47:01',
    'message' => 'zzzzzzz1',
    'read' => '1',
    'feedback' => '0',
    'cnt' => '1',
    ]
];
 
 
$b = array_filter($a, function($row){
   return ($row['_from'] == $row['_to']); 
});    
 
print_r($b);    
 
function sort_arr($item_1, $item_2)
{
  return $item_2['time'] - $item_1['time'];
}
 
usort($b, function($x, $y){
 
     return $y['id'] - $x['id'];
});
 
$max = null;
if(count($b)){
    $max = reset($b);   
}
 
print_r($max); 
 
 
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