讀取txt文件並解析文本

Question

我正在嘗試解析文本文件，但是我不確定這樣做的最佳方法和實踐。 使用PHP，我想將整個文件加載到字符串中，還是應該逐行執行？ 我不太喜歡JavaScript方法！

是否應該使用strstr在大海撈針中搜索針頭？ 或者還有什么其他方法可用於解析一致的簡單文本文件。

請注意，我要從文本文件（temp_log.txt）中獲取的唯一數據是：

 Date: 07/07/2013   Time: 00:57:00.208      21 C
 Date: 07/07/2013   Time: 00:57:02.029      25 C

temp_log.txt：

 =>MET RTD

 SEL-2411                                 Date: 07/07/2013   Time: 00:57:00.208
 DEVICE

 INTRTD01   21 C
 INTRTD02 Open
 INTRTD03 Open
 INTRTD04 NA
 INTRTD05 NA
 INTRTD06 NA
 INTRTD07 NA
 INTRTD08 NA
 INTRTD09 NA
 INTRTD10 NA

 =>

 =>MET RTD

 SEL-2411                                 Date: 07/07/2013   Time: 00:57:02.029
 DEVICE

 INTRTD01   25 C
 INTRTD02 Open
 INTRTD03 Open
 INTRTD04 NA
 INTRTD05 NA
 INTRTD06 NA
 INTRTD07 NA
 INTRTD08 NA
 INTRTD09 NA
 INTRTD10 NA

 =>

Answer 1

示例如何在PHP中使用ReGex獲取日期，時間和溫度

<?php
$text = 
"=>MET RTD

 SEL-2411                                 Date: 07/07/2013   Time: 00:57:00.208
 DEVICE

 INTRTD01   21 C
 INTRTD02 Open
 INTRTD03 Open
 INTRTD04 NA
 INTRTD05 NA
 INTRTD06 NA
 INTRTD07 NA
 INTRTD08 NA
 INTRTD09 NA
 INTRTD10 NA

 =>

 =>MET RTD

 SEL-2411                                 Date: 07/07/2013   Time: 00:57:02.029
 DEVICE

 INTRTD01   25 C
 INTRTD02 Open
 INTRTD03 Open
 INTRTD04 NA
 INTRTD05 NA
 INTRTD06 NA
 INTRTD07 NA
 INTRTD08 NA
 INTRTD09 NA
 INTRTD10 NA

 =>";

// split text to lines 
$lines = explode("\n", $text);

// find date, time and temperature
$all = array();
$date = "";
$time = "";

foreach( $lines as $line ) {
    $number = preg_match('#Date: ([^ ]+).*Time: ([^ ]+)#', $line, $result);
    if( $number > 0 ) { 
        $date = $result[1]; 
        $time = $result[2]; 
    }

    $number = preg_match('# (\d+) C#', $line, $result);
    if( $number > 0 ) { 
        $all[] = array($date, $time, $result[1]); 
    }
}

// print all results
foreach($all as $element) {
    echo "Date: ", $element[0], "   Time: ", $element[1], "      ", $element[2], " C", PHP_EOL;
}

?>