回声多维数组 - Echo a multi dimensional array

我有一个《使命召唤4》玩家列表的多维数组。当我尝试回显数组时，它会返回30次Array，因为服务器中有30个当前玩家。

$promodplist的Var_Dump（玩家列表）

array(27) { 
    [0]=> array(6) { 
        ["frags"]=> string(1) "0" 
        ["ping"]=> string(2) "26"
        ["nick"]=> string(10) "DIVINEBRAH"
        ["gq_name"]=> string(10) "DIVINEBRAH"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "26" 
    }
    [1]=> array(6) {
        ["frags"]=> string(1) "0" 
        ["ping"]=> string(2) "35" 
        ["nick"]=> string(7) "><> <><" 
        ["gq_name"]=> string(7) "><> <><" 
        ["gq_score"]=> string(1) "0" 
        ["gq_ping"]=> string(2) "35" 
    } 
    [2]=> array(6) { 
        ["frags"]=> string(1) "0" 
        ["ping"]=> string(2) "42" 
        ["nick"]=> string(10) "xXthe0neXx" 
        ["gq_name"]=> string(10) "xXthe0neXx" 
        ["gq_score"]=> string(1) "0" 
        ["gq_ping"]=> string(2) "42" 
    }

$servers['promod'] = array('cod4', '67.202.102.224');
$servers['promod2'] = array('cod4', '67.202.102.224');
$gq = new GameQ();
$gq->addServers($servers);
$results = $gq->requestData();
function print_results($results) {
foreach ($results as $id => $data)

这就是我试图用来列出当前玩家的内容。

$promodplist = $data['promod']['players'];
foreach($promodplist as $k => $v)

我只是想在每个数组中回显nick（昵称）。

$promodplist = $data['promod']['players'];
foreach($promodplist as $k => $v)
    print($v['nick']);

应该做你想做的事。foreach迭代数组中的键/值对，其中$k是元素的键（在您的情况下是基于0的索引），$v是值（对您来说是玩家数据的数组）。您可以使用其名称作为数组访问器中的键来访问其余信息。

像这个这样的函数怎么样

function print_results($results) {
    foreach ($results as $id){
        echo ": Player Info :<br />";
        foreach($id as $key => $val){
            // add this line to only print out the "nick" field
            if ($key == "nick")
            echo "Field: " . $key . " - Value: " . $val . "<br />";
        }
    }
}

此外，格式化您的数组可以帮助我们了解您正在使用的内容；有一条长长的线路比更难破译

array(27) {
    [0]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "26"
        ["nick"]=> string(10) "DIVINEBRAH"
        ["gq_name"]=> string(10) "DIVINEBRAH"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "26"
    }
    [1]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "35"
        ["nick"]=> string(7) "><> <><"
        ["gq_name"]=> string(7) "><> <><"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "35" 
    }
    [2]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "42"
        ["nick"]=> string(10) "xXthe0neXx"
        ["gq_name"]=> string(10) "xXthe0neXx"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "42" 
    }
    [3]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "50"
        ["nick"]=> string(5) "GenKY"
        ["gq_name"]=> string(5) "GenKY"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "50" 
    }
    [4]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "63"
        ["nick"]=> string(4) "dupe"
        ["gq_name"]=> string(4) "dupe"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "63" 
    }
    [5]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "72"
        ["nick"]=> string(7) "B2B vcc"
        ["gq_name"]=> string(7) "B2B vcc"
        ["gq_score"]=> string(1) "0"
        ["gq_ping"]=> string(2) "72" 
    }
    [6]=> array(6) {
        ["frags"]=> string(1) "0"
        ["ping"]=> string(2) "82"
        ["nick"]=> string(10) "[dB]tumble"
        ["gq_name"]=> string(10) "[dB]tumble"
        ["gq_score"]=> string(1) "0" 
    }
}

这里有一个我用来从多维数组构建数组的基本函数。

function db_result_array($result, $key_column = null) { 
    for ($array = array(); $row = mysql_fetch_assoc($result); isset($row[$key_column]) ? $array[$row[$key_column]] = $row : $array[] = $row); 
    return $array; 
}

您需要：

$promodplist = $data['promod']['players'];
foreach($promodplist as $k => $v)
var_dump($promodplist);

这意味着您执行相同的var_dump（）30次。你的代码中不需要foreach（），这就可以了：

$promodplist = $data['promod']['players'];
var_dump($promodplist);

作为一个单独的注意事项，你可以做的另一件事是：

$promodplist = $data['promod']['players'];
echo "<pre>";
print_r($promodplist);
echo "</pre>";