查找数组某个指定键值，必须用遍历吗？该如何解决

查找数组某个指定键值，必须用遍历吗？
数组格式如下：

PHP code

<!--

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-->Array
(
    [0] => Array
        (
            [0] => ID
            [1] => Nickname
        )

    [1] => Array
        (
            [0] => 29
            [1] => Test1
        )

    [2] => Array
        (
            [0] => 654
            [1] => Xxx1
        )

)

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PHP code

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-->foreach($array as $value){
    if($value[0]==29)
    {
        //判断条件成立，进行相关操作    
    }
}

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PHP code

$array = array(0 => array('id', 'name'), array('29', 'test'), array('65', '29'));
array_walk($array, $theValue = 'checkvalue', 29);

if ($theValue == true) {
    echo 'ok';
}
function checkvalue($value, $key, $number)
{
    if ($value[0] == $number) {
        //something
        return true;
    }
} <div class="clear">
                 
              
              
        
            </div>

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