通过PHP查找和编辑文本文件

$content = file_get_contents('file.txt');

$file = fopen('file.txt', 'r');
while (!feof($file)) {
    $line = fgets($file);
    // 处理文件内容
}
fclose($file);

$lines = file('file.txt');
foreach ($lines as $line) {
    // 处理文件内容
}

$content = file_get_contents('file.txt');
preg_match('/pattern/', $content, $matches);

$content = file_get_contents('file.txt');
$newContent = str_replace('old', 'new', $content);
file_put_contents('file.txt', $newContent);

$file = fopen('file.txt', 'w');
fwrite($file, 'new content');
fclose($file);

file_put_contents('file.txt', 'new content');