Question

我有一些文本文件。例如：file1.txt和file2.txt.

file1.txt的包含为Walk word1 in the rain Walking in the rain is one of the most beautiful word2 experiences.

有一些条件：

如果有word1和word2，我希望将这两个字之间的文字设为$between，这样我就会得到in the rain Walking in the rain is one of the most beautiful。而且我想在word2后$content获取文字，因此我会得到experiences
如果只有word1或word2（例如= Walk in the rain Walking in the rain is one of the most beautiful word1 experiences.），那么$between =''和$content就是所有文字 - ＆gt; Walk in the rain Walking in the rain is one of the most beautiful word1 experiences.
如果word2前面有word1，例如：Walk in word2 the rain Walking in the rain is one of the most word1 beautiful word1 experiences.，那么$ between =''and $ content`就是所有文字。

这是我的代码：

//to get and open the text files
$txt = glob($savePath.'*.txt');
foreach ($txt as $file => $files) {
    $handle = fopen($files, "r") or die ('can not open file');
    $ori_content = file_get_contents($files);

//count the words of text, to reach until the last word
$words = preg_split('/\s+/',$ori_content ,-1,PREG_SPLIT_NO_EMPTY);
$count = count ($words);

$word1 ='word1';
$word2 ='word2';
    if (stripos($ori_content, $word1) && stripos($ori_content, $word2)){
        $between  = substr($ori_content, stripos($ori_content, $word1)+ strlen($word1), stripos($ori_content, $word2) - stripos($ori_content, $word1)- strlen($word1));
        $content  = substr($ori_content, stripos($ori_content, $word2)+strlen($word2), stripos($ori_content, $ori_content[$count+1])  - stripos($ori_content,$word2));
    }
    else 
    $content = $ori_content;

$q0 = mysql_query("INSERT INTO tb VALUES('','$files','$content','$between')") or die(mysql_error());

但我的代码仍然无法处理：

条件号2（上面），我得到的结果是$ =经验之间，它应该是$ between =''
条件号3（上述）。我得到了结果$ etween = the rain 在雨中漫步是最美丽的word1体验之一，它应该是$ between =''
如果我在file1.txt中获取$，而不是在file2.txt中，在数据库之间的表中，对于数据file2.txt，它之间的列应该为null。但它不为null，它由其他文本文件填充
我无法说到最后一句话。

请帮帮我..提前谢谢！：）

Answer 1

我认为你只是缺少一个陈述：

...
}
else {
    $between = '';
    $content = $ori_content;
}

您可能在循环中使用此功能，因此如果您未明确将$between设置为空字符串，则可获取上一循环的值：）

修改

您也忘了比较这些职位：

if (stripos($ori_content, $word1) && stripos($ori_content, $word2)){

应该是：

$pos1 = stripos($ori_content, $word1); $pos2 = stripos($ori_content, $word2); if (false !== $pos1 && false !== $pos2 && $pos1 < $pos2) {

修改2

另一件事;您的SQL易于注入，您无法以这种方式正确使用NULL值。您可以使用此类构造，但最好使用PDO或mysqli。

$sql_between = is_null($between) ? 'NULL' : "'" . mysql_real_escape_string($between) . "'"; // apply the same treatment for `$files`, etc. ... mysql_query("INSERT INTO tb VALUES('', $sql_files, $sql_content, $sql_between)");

通过这种方式，您可以将$between设置为null并将其正确发送到MySQL。

Answer 2

我已将解析器逻辑包装到函数parse_content中。

$txt = glob($savePath.'*.txt');
foreach ($txt as $file => $files) {
    $handle = fopen($files, "r") or die ('can not open file');
    $ori_content = file_get_contents($files);
    $word1 ='word1';
    $word2 ='word2';

    $result = parse_content($word1, $word2, $ori_content);
    extract($result);

    $q0 = mysql_query("INSERT INTO tb VALUES('','$files','$content','$between')") or die(mysql_error());

}


function parse_content($word1, $word2, $input) {
    $between = '';
    $content = '';

    $w1 = stripos($input, $word1);
    $w2 = stripos($input, $word2);

    if($w1 && $w2) {
        if($w2 < $w1) {
            // Case 3
            $content = $input;
        } else {
            // Case 1
            $reg_between = '/' . $word1 . '(.*?)' . $word2 . '/';
            $reg_content = '/' . $word2 . '(.*)$/';

            preg_match($reg_between, $input, $match);
            $between = trim($match[1]);
            preg_match($reg_content, $input, $match);
            $content = trim($match[1]);
        }
    } else if($w1 || $w2) {
        // Case 2
        $content = $input;
    } else {
        // Case 4
        $content = $input;
    }

    return compact('between', 'content');
}

解析文本文件以获得一些包含

2 个答案: