file_get_contents()或fopen()来查询文件内容。，，``php，$filename = 'example.txt';，$content = file_get_contents($filename);，echo $content;，`，，或者使用fopen()和fread()：，，`php，$filename = 'example.txt';，$handle = fopen($filename, 'r');，$content = fread($handle, filesize($filename));，fclose($handle);，echo $content;，``