过滤掉 TXT 中的行并插入到数据库中 - Filtering out lines in TXT and inserting into database

我正在尝试在txt文件的行中搜索字符串，包含我正在搜索的字符串的行必须插入到我的数据库中。

php 同时循环遍历所有行，就像我说的，我正在尝试将它找到的行插入到我的数据库中。

现在的问题是，如果我运行这段代码，它会在我的数据库中插入所有 txt 文件，我不知道为什么。

$search = $_GET["search"]; 
$logfile = $_GET['logfile'];
// Read from file 
$file = fopen($logfile, "r");
?> 
<head> <title>Searching: <?php echo $search ?></title> </head> 
<?php
while( ($line =  fgets($file) )!= false)
{
if(stristr($line,$search))
$servername = "localhost";
$username = "root";
$password = "pass";
$dbname = "db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
} 
if(stristr($line,$search))
$sql = "INSERT INTO `ingamebanlist` (Ban, Timestamp) VALUES ('$line', '$timestamp')";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
// case insensitive
echo "<font face='Arial'> $line </font><hr>";
}
fclose($file);

如果不清楚，请提出任何问题

这很可能是因为您没有构建代码。罪魁祸首是这样的检查：

if(stristr($line,$search))
$servername = "localhost";

if只是掩盖了以下行。您应该将代码块包含在{中，}仅在匹配项上有条件地运行它们。您正在做同样的事情来制作$sql=查询。尽管这应该只是插入时将以前的行加倍。

而且你真的应该把mysqli连接代码移出循环。事先做一次。

顺便说一句，读取和过滤输入的更紧凑的方法是：

$f = new SplFileObject("logfile.txt", "r");
$f = new RegexIterator($f, "/" . preg_quote($search, "/") . "/i");
foreach ($f as $line) {
    db::insert(...);
}

>$array = file($filename)读取数组中以$filename给出的文件（每行一个），然后您可以使用在每一行中foreach()和搜索。如果您的搜索字符串在该行中匹配，请插入到数据库中...

$lines = file($logfile);
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
foreach($lines as $line) {
    if(stristr($line,$search))
    $sql = "INSERT INTO `ingamebanlist` (Ban, Timestamp) VALUES ('$line', '$timestamp')";
    if ($conn->query($sql) === TRUE) {
            echo "New record created successfully";
    } else {
    // ...
    }
}

尝试用这个循环替换你的循环：

while( ($line =  fgets($file) )!= false)
{
    if(stristr($line,$search)) {
        $servername = "localhost";
        $username = "root";
        $password = "pass";
        $dbname = "db";
        // Create connection
        $conn = new mysqli($servername, $username, $password, $dbname);
        // Check connection
        if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
        } 
        $sql = "INSERT INTO `ingamebanlist` (Ban, Timestamp) VALUES ('$line', '$timestamp')";
        if ($conn->query($sql) === TRUE) {
            echo "New record created successfully";
        } else {                                                                                    echo "Error: " . $sql . "<br>" . $conn->error;                                                                              }                                                                               $conn->close();
            echo "<font face='Arial'> $line </font><hr>";
        }
    }
}
fclose($file);