80 lines
3.0 KiB
PHP
80 lines
3.0 KiB
PHP
<?php
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// app/service/pdf/PdfHelper.php
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namespace app\common\utils\pdf\service;
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class PdfHelper
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{
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/** 从文件加载 HTML（支持占位符 {{key}} 简单替换） */
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public static function loadTemplate(string $file, array $vars = []): string
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{
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if (!is_file($file)) {
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throw new \RuntimeException("Template not found: {$file}");
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}
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$html = file_get_contents($file);
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if ($vars) {
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$search = [];
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$replace = [];
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foreach ($vars as $k => $v) {
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$search[] = '{{' . $k . '}}';
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$replace[] = htmlspecialchars((string)$v, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
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}
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$html = str_replace($search, $replace, $html);
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}
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return $html;
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}
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/**
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* 把 HTML 里的相对资源路径（img/link/script href/src）改成绝对路径
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* 仅处理以 ./ ../ 或非 http(s) 的相对量；base 传 public/assets/pdf 等目录
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*/
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public static function absolutizeAssetUrls(string $html, string $baseDir): string
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{
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$baseDir = rtrim($baseDir, DIRECTORY_SEPARATOR);
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// img src
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$html = preg_replace_callback('#(<img[^>]+src=["\'])([^"\']+)(["\'])#i', function($m) use ($baseDir){
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$u = $m[2];
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if (preg_match('#^https?://#i', $u) || strpos($u, 'data:') === 0) return $m[0];
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$abs = realpath($baseDir . DIRECTORY_SEPARATOR . ltrim($u, '/')) ?: ($baseDir . '/' . ltrim($u, '/'));
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return $m[1] . $abs . $m[3];
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}, $html);
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// link href（如果你在 HTML 里写了 <link>，通常建议走 css_files 方式，这里也兼容）
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$html = preg_replace_callback('#(<link[^>]+href=["\'])([^"\']+)(["\'])#i', function($m) use ($baseDir){
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$u = $m[2];
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if (preg_match('#^https?://#i', $u)) return $m[0];
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$abs = realpath($baseDir . DIRECTORY_SEPARATOR . ltrim($u, '/')) ?: ($baseDir . '/' . ltrim($u, '/'));
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return $m[1] . $abs . $m[3];
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}, $html);
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return $html;
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}
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/**
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* 渲染一个原生 PHP 模板为字符串
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* @param string $file 模板路径（如 resource/templates/stock-order.php）
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* @param array $vars 将在模板中以变量名存在（如 $data）
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* @return string 完整 HTML
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*/
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public static function render(string $file, array $vars = []): string
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{
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if (!is_file($file)) {
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throw new \RuntimeException("Template not found: {$file}");
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}
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// 将键名导出为同名变量，例如 'data' => [...] 变为 $data
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extract($vars, EXTR_OVERWRITE);
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// 开启缓冲，将 include 的输出抓取为字符串
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ob_start();
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ob_implicit_flush(false);
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try {
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/** @noinspection PhpIncludeInspection */
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include $file;
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} catch (\Throwable $e) {
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// 清理缓冲并抛出更清晰的异常
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ob_end_clean();
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throw $e;
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}
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return ob_get_clean();
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}
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} |