SELECT后的結(jié)構(gòu)
array (size=4)
  0 => 
    array (size=1)
      'id' => int 32
  1 => 
    array (size=1)
      'id' => int 31
  2 => 
    array (size=1)
      'id' => int 30
  3 => 
    array (size=1)
      'id' => int 27

單個(gè)的話

array (size=1)
  0 => 
    array (size=1)
      'id' => int 27

FIND后的結(jié)構(gòu)

array (size=2)
  'id' => int 27
  'name' => string '上海萬達(dá)五角場(chǎng)分店' (length=27)

對(duì)SELECT集合處理的處理方式

  foreach ($res1 as $k => $v) {
                $res[]=['id'=>$v['id']];
            }
            var_dump( $res);

array (size=4)
  0 => 
    array (size=1)
      'id' => int 32
  1 => 
    array (size=1)
      'id' => int 31
  2 => 
    array (size=1)
      'id' => int 30
  3 => 
    array (size=1)
      'id' => int 27
  foreach ($res1 as $k => $v) {

            $res[]=[$v];

            }
            var_dump( $res);

array (size=4)
  0 => 
    array (size=1)
      0 => int 32
  1 => 
    array (size=1)
      0 => int 31
  2 => 
    array (size=1)
      0 => int 30
  3 => 
    array (size=1)
      0 => int 27

    foreach ($res1 as $k => $v) {

                array_push( $res,$v['id']);
            }
            var_dump( $res);

array (size=4)
  0 => int 32
  1 => int 31
  2 => int 30
  3 => int 27


$cus=array_column($res1,'id');
var_dump($cus);
array (size=4)
  0 => int 32
  1 => int 31
  2 => int 30
  3 => int 27
注意對(duì)SELECT結(jié)果有效即使一行,對(duì)FIND的結(jié)果集無效
array (size=1)
 0 =>    
 array (size=1)
  'id' => int 27
區(qū)別FIND
array (size=1)
  'id' => int 27

    foreach ($res1 as $k => $v) {

                array_push( $res,$v);
            }
            var_dump( $res);

  0 => 
    array (size=1)
      'id' => int 32
  1 => 
    array (size=1)
      'id' => int 31
  2 => 
    array (size=1)
      'id' => int 30
  3 => 
    array (size=1)
      'id' => int 27

  0 => int 32
  1 => int 31
  2 => int 30
  3 => int 27