diff --git a/inc/Data/ReportQueries.php b/inc/Data/ReportQueries.php
new file mode 100644
index 00000000..3c58d945
--- /dev/null
+++ b/inc/Data/ReportQueries.php
@@ -0,0 +1,243 @@
+<?php
+namespace Vichan\Data;
+
+use Vichan\Data\Driver\CacheDriver;
+
+
+class ReportQueries {
+	private const CACHE_KEY = "report_queries_valid_count";
+
+	private \PDO $pdo;
+	private CacheDriver $cache;
+	private bool $auto_maintenance;
+
+
+	private function deleteReportImpl(string $board, int $post_id) {
+		$query = prepare("DELETE FROM ``reports`` WHERE `post` = :id AND `board` = :board");
+		$query->bindValue(':id', $post_id, \PDO::PARAM_INT);
+		$query->bindValue(':board', $board);
+		$query->execute();
+	}
+
+	private function joinReportPosts(array $raw_reports, ?int $limit): array {
+		// Group the reports rows by board.
+		$reports_by_boards = [];
+		foreach ($raw_reports as $report) {
+			if (!isset($reports_by_boards[$report['board']])) {
+				$reports_by_boards[$report['board']] = [];
+			}
+			$reports_by_boards[$report['board']][] = $report['post'];
+		}
+
+		// Join the reports with the actual posts.
+		$report_posts = [];
+		foreach ($reports_by_boards as $board => $posts) {
+			$report_posts[$board] = [];
+
+			$query = $this->pdo->prepare(\sprintf('SELECT * FROM `posts_%s` WHERE `id` IN (' . \implode(',', $posts) . ')', $board));
+			$query->execute();
+			while ($post = $query->fetch(\PDO::FETCH_ASSOC)) {
+				$report_posts[$board][$post['id']] = $post;
+			}
+		}
+
+		// Filter out the reports without a valid post.
+		$valid = [];
+		foreach ($raw_reports as $report) {
+			if (isset($report_posts[$report['board']][$report['post']])) {
+				$report['post_data'] = $report_posts[$report['board']][$report['post']];
+				$valid[] = $report;
+
+				if ($limit !== null && \count($valid) >= $limit) {
+					return $valid;
+				}
+			} else {
+				// Invalid report (post has been deleted).
+				if ($this->auto_maintenance != false) {
+					$this->deleteReportImpl($report['board'], $report['post']);
+				}
+			}
+		}
+		return $valid;
+	}
+
+	/**
+	 * Filters out the invalid reports.
+	 *
+	 * @param array $raw_reports Array with the raw fetched reports. Must include a `board`, `post` and `id` fields.
+	 * @param bool $get_invalid True to reverse the filter and get the invalid reports instead.
+	 * @return array An array of filtered reports.
+	 */
+	private function filterReports(array $raw_reports, bool $get_invalid): array {
+		// Group the reports rows by board.
+		$reports_by_boards = [];
+		foreach ($raw_reports as $report) {
+			if (!isset($reports_by_boards[$report['board']])) {
+				$reports_by_boards[$report['board']] = [];
+			}
+			$reports_by_boards[$report['board']][] = $report['post'];
+		}
+
+		// Join the reports with the actual posts.
+		$report_posts = [];
+		foreach ($reports_by_boards as $board => $posts) {
+			$report_posts[$board] = [];
+
+			$query = $this->pdo->prepare(\sprintf('SELECT `id` FROM `posts_%s` WHERE `id` IN (' . \implode(',', $posts) . ')', $board));
+			$query->execute();
+			while ($post = $query->fetch(\PDO::FETCH_ASSOC)) {
+				$report_posts[$board][$post['id']] = $post;
+			}
+		}
+
+		if ($get_invalid) {
+			// Get the reports without a post.
+			$invalid = [];
+			if (isset($report_posts[$report['board']][$report['post']])) {
+				$invalid[] = $report;
+			}
+			return $invalid;
+		} else {
+			// Filter out the reports without a valid post.
+			$valid = [];
+			foreach ($raw_reports as $report) {
+				if (isset($report_posts[$report['board']][$report['post']])) {
+					$valid[] = $report;
+				} else {
+					// Invalid report (post has been deleted).
+					if ($this->auto_maintenance != false) {
+						$this->deleteReportImpl($report['board'], $report['post']);
+					}
+				}
+			}
+			return $valid;
+		}
+	}
+
+	/**
+	 * @param \PDO $pdo PDO connection.
+	 * @param CacheDriver $cache Cache driver.
+	 * @param bool $auto_maintenance If the auto maintenance should be enabled.
+	 */
+	public function __construct(\PDO $pdo, CacheDriver $cache, bool $auto_maintenance) {
+		$this->pdo = $pdo;
+		$this->cache = $cache;
+		$this->auto_maintenance = $auto_maintenance;
+	}
+
+	/**
+	 * Get the number of reports.
+	 *
+	 * @return int The number of reports.
+	 */
+	public function getCount(): int {
+		$ret = $this->cache->get(self::CACHE_KEY);
+		if ($ret === null) {
+			$query = $this->pdo->prepare("SELECT `board`, `post`, `id` FROM `reports`");
+			$query->execute();
+			$raw_reports = $query->fetchAll(\PDO::FETCH_ASSOC);
+			$valid_reports = $this->filterReports($raw_reports, false, null);
+			$count = \count($valid_reports);
+
+			$this->cache->set(self::CACHE_KEY, $count);
+			return $count;
+		}
+		return $ret;
+	}
+
+	/**
+	 * Get the report with the given id. DOES NOT PERFORM VALIDITY CHECK.
+	 *
+	 * @param int $id The id of the report to fetch.
+	 * @return ?array An array of the given report with the `board` and `ip` fields. Null if no such report exists.
+	 */
+	public function getReportById(int $id): array {
+		$query = prepare("SELECT `board`, `ip` FROM ``reports`` WHERE `id` = :id");
+		$query->bindValue(':id', $id);
+		$query->execute();
+
+		$ret = $query->fetch(\PDO::FETCH_ASSOC);
+		if ($ret !== false) {
+			return $ret;
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * Get the reports with the associated post data.
+	 *
+	 * @param int $count The maximum number of rows in the return array.
+	 * @return array The reports with the associated post data.
+	 */
+	public function getReportsWithPosts(int $count): array {
+		$query = $this->pdo->prepare("SELECT * FROM `reports` ORDER BY `time`");
+		$query->execute();
+		$raw_reports = $query->fetchAll(\PDO::FETCH_ASSOC);
+		return $this->joinReportPosts($raw_reports, $count);
+	}
+
+	/**
+	 * Purge the invalid reports.
+	 *
+	 * @return int The number of reports deleted.
+	 */
+	public function purge(): int {
+		$query = $this->pdo->prepare("SELECT `board`, `post`, `id` FROM `reports`");
+		$query->execute();
+		$raw_reports = $query->fetchAll(\PDO::FETCH_ASSOC);
+		$invalid_reports = $this->filterReports($raw_reports, true, null);
+
+		foreach ($invalid_reports as $report) {
+			$this->deleteReportImpl($report['board'], $report['post']);
+		}
+		return \count($invalid_reports);
+	}
+
+	/**
+	 * Deletes the given report.
+	 *
+	 * @param int $id The report id.
+	 */
+	public function deleteById(int $id) {
+		// The caller may actually delete a valid post, so we need to invalidate the cache.
+		$this->cache->delete(self::CACHE_KEY);
+		$query = $this->pdo->prepare("DELETE FROM `reports` WHERE `id` = :id");
+		$query->bindValue(':id', $id, \PDO::PARAM_INT);
+		$query->execute();
+	}
+
+	/**
+	 * Deletes all reports from the given ip.
+	 *
+	 * @param int $ip The reporter ip.
+	 */
+	public function deleteByIp(string $ip) {
+		// The caller may actually delete a valid post, so we need to invalidate the cache.
+		$this->cache->delete(self::CACHE_KEY);
+		$query = $this->pdo->prepare("DELETE FROM `reports` WHERE `ip` = :ip");
+		$query->bindValue(':ip', $ip);
+		$query->execute();
+	}
+
+	/**
+	 * Inserts a new report.
+	 *
+	 * @param string $ip Ip of the user sending the report.
+	 * @param string $board_uri Board uri of the reported thread. MUST ALREADY BE SANITIZED.
+	 * @param int $post_id Post reported.
+	 * @param string $reason Reason of the report.
+	 * @return void
+	 */
+	public function add(string $ip, string $board_uri, int $post_id, string $reason) {
+		$query = $this->pdo->prepare('INSERT INTO `reports` VALUES (NULL, :time, :ip, :board, :post, :reason)');
+		$query->bindValue(':time', time(), \PDO::PARAM_INT);
+		$query->bindValue(':ip', $ip);
+		$query->bindValue(':board', $board_uri);
+		$query->bindValue(':post', $post_id, \PDO::PARAM_INT);
+		$query->bindValue(':reason', $reason);
+		$query->execute();
+
+		$this->cache->delete(self::CACHE_KEY);
+	}
+}
diff --git a/inc/context.php b/inc/context.php
index 137f6ebd..6ff656fe 100644
--- a/inc/context.php
+++ b/inc/context.php
@@ -2,6 +2,7 @@
 namespace Vichan;
 
 use Vichan\Data\Driver\CacheDriver;
+use Vichan\Data\ReportQueries;
 
 defined('TINYBOARD') or exit;
 
@@ -33,6 +34,18 @@ function build_context(array $config): Context {
 		CacheDriver::class => function($c) {
 			// Use the global for backwards compatibility.
 			return \cache::getCache();
+		},
+		\PDO::class => function($c) {
+			global $pdo;
+			// Ensure the PDO is initialized.
+			sql_open();
+			return $pdo;
+		},
+		ReportQueries::class => function($c) {
+			$auto_maintenance = (bool)$c->get('config')['auto_maintenance'];
+			$pdo = $c->get(\PDO::class);
+			$cache = $c->get(CacheDriver::class);
+			return new ReportQueries($pdo, $cache, $auto_maintenance);
 		}
 	]);
 }
diff --git a/inc/mod/pages.php b/inc/mod/pages.php
index 050e1216..9f569c77 100644
--- a/inc/mod/pages.php
+++ b/inc/mod/pages.php
@@ -3,6 +3,7 @@
  *  Copyright (c) 2010-2013 Tinyboard Development Group
  */
 use Vichan\Context;
+use Vichan\Data\ReportQueries;
 use Vichan\Functions\Format;
 use Vichan\Functions\Net;
 
@@ -2891,58 +2892,21 @@ function mod_reports(Context $ctx) {
         error($config['error']['noaccess']);
 
     $reports_limit = $config['mod']['recent_reports'];
+    $report_queries = $ctx->get(ReportQueries::class);
+    $report_rows = $report_queries->getReportsWithPosts($reports_limit);
 
-    $query = prepare("SELECT * FROM ``reports`` ORDER BY `time` DESC LIMIT :limit");
-    $query->bindValue(':limit', $reports_limit + 1, PDO::PARAM_INT);
-    $query->execute() or error(db_error($query));
-    $reports = $query->fetchAll(PDO::FETCH_ASSOC);
-
-    $report_queries = [];
-    foreach ($reports as $report) {
-        if (!isset($report_queries[$report['board']])) {
-            $report_queries[$report['board']] = [];
-        }
-        $report_queries[$report['board']][] = $report['post'];
-    }
-
-    $report_posts = [];
-    foreach ($report_queries as $board => $posts) {
-        $report_posts[$board] = [];
-
-        $query = query(\sprintf('SELECT * FROM ``posts_%s`` WHERE `id` IN (' . \implode(',', $posts) . ')', $board)) or error(db_error());
-        while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
-            $report_posts[$board][$post['id']] = $post;
-        }
-    }
-
-    $to_build = [];
-    foreach ($reports as $report) {
-        if (isset($report_posts[$report['board']][$report['post']])) {
-            $to_build[] = $report;
-        } else {
-            // Invalid report (post has since been deleted)
-            if ($config['auto_maintenance'] != false) {
-                $query = prepare("DELETE FROM ``reports`` WHERE `post` = :id AND `board` = :board");
-                $query->bindValue(':id', $report['post'], PDO::PARAM_INT);
-                $query->bindValue(':board', $report['board']);
-                $query->execute() or error(db_error($query));
-            }
-            continue;
-        }
-    }
-
-    if (\count($to_build) > $reports_limit) {
-        \array_pop($to_build);
+    if (\count($report_rows) > $reports_limit) {
+        \array_pop($report_rows);
         $has_extra = true;
     } else {
         $has_extra = false;
     }
 
     $body = '';
-    foreach ($to_build as $report) {
+    foreach ($report_rows as $report) {
         openBoard($report['board']);
 
-        $post = &$report_posts[$report['board']][$report['post']];
+        $post = $report['post_data'];
 
         if (!$post['thread']) {
             // Still need to fix this:
@@ -2951,7 +2915,7 @@ function mod_reports(Context $ctx) {
             $po = new Post($post, '?/', $mod);
         }
 
-        // a little messy and inefficient
+        // A little messy and inefficient.
         $append_html = Element('mod/report.html', array(
             'report' => $report,
             'config' => $config,
@@ -2978,7 +2942,7 @@ function mod_reports(Context $ctx) {
         }
     }
 
-    $count = \count($to_build);
+    $count = \count($report_rows);
     $header_count = $has_extra ? "{$count}+" : (string)$count;
 
     mod_page(
@@ -2991,36 +2955,31 @@ function mod_reports(Context $ctx) {
 function mod_report_dismiss(Context $ctx, $id, $all = false) {
     global $config;
 
-    $query = prepare("SELECT `post`, `board`, `ip` FROM ``reports`` WHERE `id` = :id");
-    $query->bindValue(':id', $id);
-    $query->execute() or error(db_error($query));
-    if ($report = $query->fetch(PDO::FETCH_ASSOC)) {
-        $ip = $report['ip'];
-        $board = $report['board'];
-        $post = $report['post'];
-    } else
+    $report_queries = $ctx->get(ReportQueries::class);
+    $report = $report_queries->getReportById($id);
+
+    if ($report === null) {
         error($config['error']['404']);
+    }
 
-    if (!$all && !hasPermission($config['mod']['report_dismiss'], $board))
-        error($config['error']['noaccess']);
+    $ip = $report['ip'];
+    $board = $report['board'];
 
-    if ($all && !hasPermission($config['mod']['report_dismiss_ip'], $board))
+    if (!$all && !hasPermission($config['mod']['report_dismiss'], $board)) {
         error($config['error']['noaccess']);
+    }
+
+    if ($all && !hasPermission($config['mod']['report_dismiss_ip'], $board)) {
+        error($config['error']['noaccess']);
+    }
 
     if ($all) {
-        $query = prepare("DELETE FROM ``reports`` WHERE `ip` = :ip");
-        $query->bindValue(':ip', $ip);
-    } else {
-        $query = prepare("DELETE FROM ``reports`` WHERE `id` = :id");
-        $query->bindValue(':id', $id);
-    }
-    $query->execute() or error(db_error($query));
-
-
-    if ($all)
+        $report_queries->deleteByIp($ip);
         modLog("Dismissed all reports by <a href=\"?/IP/$ip\">$ip</a>");
-    else
+    } else {
+        $report_queries->deleteById($id);
         modLog("Dismissed a report for post #{$id}", $board);
+    }
 
     header('Location: ?/reports', true, $config['redirect_http']);
 }
diff --git a/post.php b/post.php
index 78a1bb90..642e8057 100644
--- a/post.php
+++ b/post.php
@@ -4,6 +4,7 @@
  */
 
 use Vichan\Context;
+use Vichan\Data\ReportQueries;
 
 require_once 'inc/bootstrap.php';
 
@@ -318,26 +319,6 @@ function db_select_post_minimal($board, $id)
     return $post;
 }
 
-/**
- * Inserts a new report.
- *
- * @param string $ip Ip of the user sending the report.
- * @param string $board Board of the reported thread. MUST ALREADY BE SANITIZED.
- * @param int $post_id Post reported.
- * @param string $reason Reason of the report.
- * @return void
- */
-function db_insert_report($ip, $board, $post_id, $reason)
-{
-    $query = prepare("INSERT INTO ``reports`` VALUES (NULL, :time, :ip, :board, :post, :reason)");
-    $query->bindValue(':time', time(), PDO::PARAM_INT);
-    $query->bindValue(':ip', $ip, PDO::PARAM_STR);
-    $query->bindValue(':board', $board, PDO::PARAM_STR);
-    $query->bindValue(':post', $post_id, PDO::PARAM_INT);
-    $query->bindValue(':reason', $reason, PDO::PARAM_STR);
-    $query->execute() or error(db_error($query));
-}
-
 /**
  * Inserts a new ban appeal into the database.
  *
@@ -711,6 +692,8 @@ function handle_report(Context $ctx)
     $reason = escape_markup_modifiers($_POST['reason']);
     markup($reason);
 
+    $report_queries = $ctx->get(ReportQueries::class);
+
     foreach ($report as $id) {
         $post = db_select_post_minimal($board['uri'], $id);
         if ($post === false) {
@@ -739,7 +722,7 @@ function handle_report(Context $ctx)
                     ' for "' . $reason . '"'
             );
 
-        db_insert_report($_SERVER['REMOTE_ADDR'], $board['uri'], $id, $reason);
+        $report_queries->add($_SERVER['REMOTE_ADDR'], $board['uri'], $id, $reason);
 
         if ($config['slack']) {
             function slack($message, $room = "reports", $icon = ":no_entry_sign:")