Errore未定義抵消：1個尼洛腳本

Question

我兩天，我正在嘗試解決這些錯誤， 公告：未定義抵消：1線230

注意：未定義指數：上線231

$righi = file($txt); 
    foreach($righi as $id => $player){ 
    list($name, $position) = explode(">", $player); 
    $weighted[$weights[trim($position)]] = trim($player); 

Answer 1

使用isset，例如：

if(isset($weighted[$weights[trim($position)]])){ 
    // your code 
} 

Answer 2

$righi = file($txt); 
    foreach($righi as $id => $player){ 
    list($name, $position) = explode(">", $player); 
    if(isset($weighted[$weights[trim($position)]])){ 
    $weighted[$weights[trim($position)]] = trim($player); } 


//sort by keys (reverse order ... descending) 
krsort($weighted); 
//overwrite original file 
file_put_contents($txt, $comment . implode(PHP_EOL, $weighted)); 
?> 

解析錯誤：語法錯誤，對意外的文件結束行240