检查其他数组中的关联数组？

Question

我有两个数组$A，$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在这种情况下如何检查数组$A中的数组$B。

Answer 1

简单地：

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
}