我有一个文本文件，如：
================================================
[Feb 11 2013 13:17:14] - some string here and here
General options - [something]
Line y
================================================
Line 1
Line 2
Line 3
Line 4
Line 5
Something here. Error message: ReferenceError: applyMetadataTemplate is undefined; line: 625
Line 7
================================================
[Feb 11 2013 16:07:14] - some string here and here
General options - [something]
Line y
================================================
Line 1
Line 2
Line 3
Line 4
Line 5
Something here. Error message: ReferenceError: applyMetadataTemplate is undefined; line: 625
Line 7
现在我想倒过来读这个文件，对于我在一个有新日期的记录中发现的每个错误，我都需要做点什么。我需要帮助1）向后读取文件，直到遇到日期并保存该日期；2）将所有行作为字符串，然后在其中找到单词Error。注意：每条记录可能有不同的行数，其中可能不一定有单词error。这更像是"查找和匹配日期，然后在该记录中查找错误"类型的问题。
$matches = array();
$file = file("log.txt");
$file = array_reverse($file);
foreach($file as $f){
if (stripos($f, "[") !== false) {
// Check string for date by regex
preg_match('/('D*) ('d{2}) ('d{4})/', $f, $matches);
// Check that parts of the date were found
if(count($matches) > 2) {
echo $f; //print the line
break;
}
}
}
读取一个文件，将其转换为数组，然后反转数组进行反向遍历，然后打印出最后一个日期。