过滤掉TXT中的行并插入数据库

Question

我正在尝试在 txt 文件的一行中搜索字符串，必须将包含我正在搜索的字符串的行插入到我的数据库中。

php while 循环遍历所有行，就像我说的那样，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，它会将所有 txt 文件插入到我的数据库中，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);

有不明白的地方欢迎提问

Answer 1

$array = file($filename) 读取数组中 $filename 中给出的文件（每行一个），然后您可以使用 foreach() 迭代数组并在每一行中搜索。如果您的搜索字符串匹配该行，则插入数据库...

$lines = file($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 {
    // ...
    }
}

Answer 2

这很可能是因为您没有构建代码。罪魁祸首是这样的支票：

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

if 只是屏蔽了下面一行。您应该将代码块包含在 { 和 } 中，以便有条件地运行它们仅在匹配时出现。您在构造 $sql= 查询时有点像做同样的事情。尽管这应该只是插入前几行的两倍。

而且您真的应该将 mysqli 连接代码移出循环。事先做一次。

顺便说一句，一种更紧凑的读取和过滤输入的方法是：

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

Answer 3

尝试用这个替换你的循环：

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);

过滤掉TXT中的行并插入数据库

Filtering out lines in TXT and inserting into database

php

mysql

mysqli