Merge pull request #372 from wrongecho/diff

Show diff between current DB structure and the latest DB structure

settings-update.php

@@ -55,8 +55,33 @@ $git_log = shell_exec("git log master..origin/master --pretty=format:'<tr><td>%h
             </table>
             <?php
         }
+
+        // Display a diff between the current DB structure and the latest DB structure, *NIX only
+        if((strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN')){
+
+            // Get DB structure as it is
+            exec("mysqldump --user=$dbusername --password=$dbpassword --skip-extended-insert -d --no-data $database | sed 's/ AUTO_INCREMENT=[0-9]*//g' | egrep -v 'MariaDB dump|Host:|Server version|Dump completed' > /tmp/current-structure.sql");
+
+            // Get the new structure from db.sql
+            exec("egrep -v 'MariaDB dump|Host:|Server version|Dump completed' db.sql > /tmp/new-structure.sql");
+
+            // Compare
+            exec("diff /tmp/current-structure.sql /tmp/new-structure.sql > /tmp/diff.txt");
+            $diff = file_get_contents("/tmp/diff.txt");
+
+            // Display, if there is a difference
+            if(!empty($diff)){
+                echo "<br><br><h2>Diff between your database structure and db.sql</h2>";
+                echo "<div style=\"white-space: pre-line\"> $diff </div>";
+            }
+
+        }
+
         ?>
+
     </div>
 </div>
 
-<?php include("footer.php");
+<?php
+
+include("footer.php");