Question

我遇到了这个PHP代码的问题。它应该提取日志文件中发生的错误总数。每次运行它，我都会收到此错误：未定义的偏移量：2

<?php

$handle = fopen('../../apache2/logs/error.log','r') or die ('File opening failed');
$requestsCount = 0;
$numerror = 0;

while (!feof($handle)) {
    $dd = fgets($handle);
    $requestsCount++;   
    $parts = explode('"', $dd);
    $statusCode = substr($parts[2], 0, 4);
    if (hasRequestType($statusCode, 'error')) $numerror++;
}

echo "Total Errors: " . $numerror . "<br />";
fclose($handle);

function hasRequestType($l,$s) {
        return substr_count($l,$s) > 0;
}
?>

任何帮助都会很棒

Answer 1

在尝试访问数组偏移之前，您需要检查数组偏移是否存在：

 $statusCode = substr($parts[2], 0, 4);

应该是

if (array_key_exists(2, $parts)) { 
    $statusCode = substr($parts[2], 0, 4);
} else $statusCode = -1; //or whatever you want to do if there is no status code

PHP错误：未定义的偏移量：2

1 个答案: