检查其他数组中的关联数组？

Question

我有两个阵列$A，$B

$B = Array 
(
    [0] => Array 
     (
      [id_participant] => 94 
      [full_name] => soeng makara 
     ) 

    [1] => Array 
     (
      [id_participant] => 95 
      [full_name] => sok sao 
     ) 

) 

$A = Array 
(
    [0] => Array 
     (
      [id_participant] => 95 
      [full_name] => sok sao 
     ) 
) 

任何人都可以帮助我，我怎么能在这种情况下，阵列$B检查数组$A。

Answer 1

简单：

if (in_array($A[0], $B)) 
{ 
    // in array 
} 

Answer 2

您想知道$ a中的项目是否在$ b？

function checkIfInArray($a, $b)  
{ 
    foreach($b as $i) 
     foreach($a as $x) 
      if($x['id_participant'] == $i['id_participant']) return true; //Match found 
    return false; //No Match was found 
}