如何使用PHP脚本在Linux环境下进行数据处理

sudo apt-get install php

php script.php

$file = fopen("data.txt", "r");

while (!feof($file)) {
    $line = fgets($file);
    // 进行数据处理
}

fclose($file);

$file = fopen("data.csv", "r");

while (($line = fgetcsv($file)) !== false) {
    // 进行数据处理
}

fclose($file);

$servername = "localhost";
$username = "user";
$passWord = "password";
$dbname = "database";

$conn = new Mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM table";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        // 进行数据处理
    }
}

$conn->close();

$file = fopen("data.txt", "r");

$wordCount = array();

while (!feof($file)) {
    $line = fgets($file);
    $words = explode(" ", $line);

    foreach ($words as $word) {
        $word = trim($word);

        if (isset($wordCount[$word])) {
            $wordCount[$word]++;
        } else {
            $wordCount[$word] = 1;
        }
    }
}

fclose($file);

foreach ($wordCount as $word => $count) {
    echo $word . ": " . $count . "
";
}