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如何將此遞歸函數轉換爲laravel函數。這裏是錯誤消息如何將此函數轉換爲laravel函數
「array_filter()預計參數1是數組,對象給出」
實際功能
$sql = "SELECT * FROM tasks";
$r = mysql_query($sql, $conn);
$arr = array();
while ($row = mysql_fetch_assoc($r))
$arr[] = $row
function build($arrayIn, $parent)
{
$makeFilter = function($p) {return function($x) use ($p) {return $x['parent'] == $p;};};
$f = $makeFilter($parent);
$these = array_filter($arrayIn, $f);
$remaining = array_diff_assoc($arrayIn, $these);
$ans = array();
foreach($these as $cur)
{
$ans[$cur['text']] = build($remaining, $cur['id']);
}
return $ans ? $ans : null;
}
$tree = build($arr, 0)
echo_r($arr);
echo "becomes<br />";
echo_r($tree);
我嘗試未工作
$arr = USER::all();
function build($arrayIn, $parent)
{
$makeFilter = function($p) {return function($x) use ($p) {return $x['parent'] == $p;};};
$f = $makeFilter($parent);
$these = array_filter($arrayIn, $f);
$remaining = array_diff_assoc($arrayIn, $these);
$ans = array();
foreach($these as $cur)
{
$ans[$cur['text']] = build($remaining, $cur['id']);
}
return $ans ? $ans : null;
}
$tree = build($arr, 0)
echo_r($arr);
echo "becomes<br />";
echo_r($tree);
奏效現在得到resolveded其投擲ErrorException(E_UNKNOWN)數組字符串轉換 – 2014-10-01 12:06:29
@DanielEuchar什麼'的var_dump十分感謝( $ arr-> toArray());'輸出? – Steve 2014-10-01 12:10:08
http://pastebin.com/KjRgqWgP這裏是輸出 – 2014-10-01 12:15:03