结合mysql数组

Question

I have two arrays

array1:

  [0]=>array(
     ['user']=>'name1',
     ['age']=>'28'     
  ),
  [1]=>array(
     ['user']=>'name2',
     ['age']=>'58'     
  ),
  [2]=>array(
     ['user']=>'name3',
     ['age']=>'15'     
  )

array2

  [0]=>array(
     ['user']=>'name3',
     ['sex']=>'male'     
  ),
  [1]=>array(
     ['user']=>'name1',
     ['sex']=>'male'     
  ),
  [2]=>array(
     ['user']=>'name2',
     ['sex']=>'female'
  )

Expecting result

  [0]=>array(
     ['user']=>'name1',
     ['age']=>'28',
     ['sex']=>'male'     
  ),
  [1]=>array(
     ['user']=>'name2',
     ['age']=>'58',
     ['sex']=>'male'     
  ),
  [2]=>array(
     ['user']=>'name3',
     ['age']=>'15',
     ['sex']=>'female'
  )

I have tried lot of ways array_merge, array_combine . But i dont know where i did mistakes. please help me

Answer 1

Well, if you cannot find built-in function to match your particular case (and there will be plenty of such cases), then maybe you have to try by yourself?

Map the arrays by the name key and fill a new one:

<?php
$arr1 =array ( 0=>array(
     'user'=>'name1',
     'age'=>'28'     
  ),
  1=>array(
     'user'=>'name2',
     'age'=>'58'     
  ),
  2=>array(
     'user'=>'name3',
     'age'=>'15'     
  )
);

$arr2 =array (0=>array(
     'user'=>'name3',
     'sex'=>'male'     
  ),
  1=>array(
     'user'=>'name1',
     'sex'=>'male'     
  ),
  2=>array(
     'user'=>'name2',
     'sex'=>'female'
  )
);

$result = array();
foreach ($arr1 as $key => $value) {
    foreach ($arr2 as $k => $v) {
        if($value['user'] == $v['user']) {
            $result[$k]['user'] = $arr1[$k]['user'];
            $result[$k]['age'] = $arr1[$k]['age'];
            $result[$k]['sex'] = $arr2[$k]['sex'];
        }
    }
}

var_dump($result);

array (size=3)
  1 => 
    array (size=3)
      'user' => string 'name2' (length=5)
      'age' => string '58' (length=2)
      'sex' => string 'male' (length=4)
  2 => 
    array (size=3)
      'user' => string 'name3' (length=5)
      'age' => string '15' (length=2)
      'sex' => string 'female' (length=6)
  0 => 
    array (size=3)
      'user' => string 'name1' (length=5)
      'age' => string '28' (length=2)
      'sex' => string 'male' (length=4)

You can use sort to sort by keys:

sort($result);
var_dump($result);

array (size=3)
  0 => 
    array (size=3)
      'user' => string 'name1' (length=5)
      'age' => string '28' (length=2)
      'sex' => string 'male' (length=4)
  1 => 
    array (size=3)
      'user' => string 'name2' (length=5)
      'age' => string '58' (length=2)
      'sex' => string 'male' (length=4)
  2 => 
    array (size=3)
      'user' => string 'name3' (length=5)
      'age' => string '15' (length=2)
      'sex' => string 'female' (length=6)