From e93bb1ad41a049cb16ac1ce3ae59ab6eee6a9ccc Mon Sep 17 00:00:00 2001
From: Lizandro Guarnizo <77708265+lizandrogd@users.noreply.github.com>
Date: Fri, 24 Jul 2026 10:14:04 -0500
Subject: [PATCH] fix: evitar que <?xml rompa PHP con short_open_tag

El parser de PHP interpreta <? en HTML mode cuando short_open_tag=On.
Se rompe la cadena para que no aparezca el literal <? en el archivo.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 lab_domicilios.php | 2 +-
 lab_reportes.php   | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lab_domicilios.php b/lab_domicilios.php
index 92f50e7..e31323f 100644
--- a/lab_domicilios.php
+++ b/lab_domicilios.php
@@ -1616,7 +1616,7 @@ async function ffExportarExcel() {
     });
     const xlsEsc = v => String(v).replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
     const toCell = v => `<Cell><Data ss:Type="String">${xlsEsc(v)}</Data></Cell>`;
-    const xml = `<?xml version="1.0" encoding="UTF-8"?>\n<?mso-application progid="Excel.Sheet"?>\n`
+    const xml = '<' + '?xml version="1.0" encoding="UTF-8"?>\n<' + '?mso-application progid="Excel.Sheet"?>\n'
         + `<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">`
         + `<Worksheet ss:Name="Domicilios"><Table>\n`
         + csvRows.map(r => `<Row>${r.map(toCell).join('')}</Row>`).join('\n')
diff --git a/lab_reportes.php b/lab_reportes.php
index b6eac6c..abf2cc7 100644
--- a/lab_reportes.php
+++ b/lab_reportes.php
@@ -209,8 +209,8 @@ if ($tipo) {
     header('Pragma: no-cache');
 
     $esc = fn($v) => htmlspecialchars((string)$v, ENT_XML1, 'UTF-8');
-    echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
-    echo '<?mso-application progid="Excel.Sheet"?>' . "\n";
+    echo '<' . '?xml version="1.0" encoding="UTF-8"?' . '>' . "\n";
+    echo '<' . '?mso-application progid="Excel.Sheet"?' . '>' . "\n";
     echo '<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"' . "\n";
     echo ' xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">' . "\n";
     echo '<Worksheet ss:Name="Reporte"><Table>' . "\n";