PHP reads the content of a text file line by line, outputs 100 lines at a time, and supports paginated output.

<?php
// 打开标题文件
$handle = fopen("huizong.txt", "r");

// 读取文件内容，并移除UTF-8 BOM
$content = fread($handle, filesize("huizong.txt"));
$content = substr($content, 3); // 移除UTF-8 BOM

// 关闭文件句柄
fclose($handle);

// 将内容按行分割为数组
$titles = explode("\n", $content);

// 去除每行首尾的空格
$titles = array_map('trim', $titles);

// 获取文件总行数
$total = count($titles);

// 设置每页显示的标题数量和当前页的 pageid
$per_page = 1000;
$page_id = isset($_GET['pageid']) ? intval($_GET['pageid']) : 1;

// 计算总页数
$total_pages = ceil($total / $per_page);

// 计算偏移量
$offset = ($page_id - 1) * $per_page;

// 读取指定偏移量和行数的标题
$titles = array_slice($titles, $offset, $per_page);

// 将标题、总行数、总页数组成关联数组
$data = array(
    'total' => $total,
    'total_pages' => $total_pages,
    'titles' => $titles
);

// 输出标题列表
header('Content-Type: application/json');
echo json_encode($data);

<?php
$filename = "huizong.txt";

// 打开标题文件
$handle = fopen($filename, "r");

// 获取文件总行数
$total = count(file($filename));

// 设置每页显示的标题数量和当前页的 pageid
$per_page = 100;
$page_id = isset($_GET['pageid']) ? intval($_GET['pageid']) : 1;

// 计算总页数
$total_pages = ceil($total / $per_page);

// 计算偏移量
$offset = ($page_id - 1) * $per_page;

// 读取指定偏移量和行数的标题
$titles = array();
if ($handle) {
    // 跳过偏移量之前的行
    for ($i = 0; $i < $offset; ++$i) {
        fgets($handle);
    }
    // 读取指定行数的标题
    for ($i = 0; $i < $per_page; ++$i) {
        $title = fgets($handle);
        if ($title !== false) {
            $titles[] = trim($title);
        } else {
            break;
        }
    }
    fclose($handle);
}

// 将标题、总行数、总页数等信息组成关联数组
$data = array(
    'total' => $total,
    'total_pages' => $total_pages,
    'titles' => $titles
);

// 输出标题列表及相关信息
header('Content-Type: application/json');
echo json_encode($data);