以可读/分层格式显示数组

Question

这是为我的数组提取数据的代码

<?php
    $link = mysqli_connect('localhost', 'root', '', 'mutli_page_form');

    $query = "SELECT * FROM wills_children WHERE will=73";

    $result = mysqli_query($link, $query) or die(mysqli_error($link));

    if ($result = mysqli_query($link, $query)) {

    /* fetch associative array */
    if($row = mysqli_fetch_assoc($result)) {
        $data = unserialize($row['children']);
    }

    /* free result set */
    mysqli_free_result($result);
    }
?>

当我使用print_r($ data)时,它读作:

Array ( [0] => Array ( [0] => Natural Chlid 1 [1] => Natural Chlid 2 [2] => Natural Chlid 3 ) ) 

我希望它读作:

自然孩子1
自然孩子2
自然孩子3

Answer 1

代替

print_r($data);

尝试

print "<pre>";
print_r($data);
print "</pre>";

Answer 2

print("<pre>".print_r($data,true)."</pre>");

Answer 3

我有一个基本功能:

function prettyPrint($a) {
    echo "<pre>";
    print_r($a);
    echo "</pre>";
}

prettyPrint($data);

编辑:优化功能

function prettyPrint($a) {
    echo '<pre>'.print_r($a,1).'</pre>';
}

编辑: Moar优化功能,支持自定义标签

function prettyPrint($a, $t='pre') {echo "<$t>".print_r($a,1)."</$t>";}

Answer 4

试试这个:

foreach($data[0] as $child) {
   echo $child . "\n";
}

代替 print_r($data)

Answer 5

我认为var_export(),被遗忘的兄弟var_dump()拥有最好的输出 - 它更紧凑:

echo "<pre>";
var_export($menue);
echo "</pre>";

顺便说一下:使用它并不是必需的<pre>.当您查看网页的源代码时var_dump(),var_export()已经格式化了.

Answer 6

如果有人需要查看数组这么酷;)使用此方法..这将打印到您的浏览器控制台

function console($obj)
{
    $js = json_encode($obj);
    print_r('<script>console.log('.$js.')</script>');
}

你可以像这样使用..

console($myObject);

输出就像这样..太酷了呃!!

Answer 7

foreach($array as $v) echo $v, PHP_EOL;

更新：更复杂的解决方案是：

 $test = [
    'key1' => 'val1',
    'key2' => 'val2',
    'key3' => [
        'subkey1' => 'subval1',
        'subkey2' => 'subval2',
        'subkey3' => [
            'subsubkey1' => 'subsubval1',
            'subsubkey2' => 'subsubval2',
        ],
    ],
];
function printArray($arr, $pad = 0, $padStr = "\t") {
    $outerPad = $pad;
    $innerPad = $pad + 1;
    $out = '[' . PHP_EOL;
    foreach ($arr as $k => $v) {
        if (is_array($v)) {
            $out .= str_repeat($padStr, $innerPad) . $k . ' => ' . printArray($v, $innerPad) . PHP_EOL;
        } else {
            $out .= str_repeat($padStr, $innerPad) . $k . ' => ' . $v;
            $out .= PHP_EOL;
        }
    }
    $out .= str_repeat($padStr, $outerPad) . ']';
    return $out;
}

echo printArray($test);

这打印出来：

    [
        key1 => val1
        key2 => val2
        key3 => [
            subkey1 => subval1
            subkey2 => subval2
            subkey3 => [
                subsubkey1 => subsubval1
                subsubkey2 => subsubval2
            ]
        ]
    ]