From 2981859ac1a89df2d415025f07fd41a61ffeb44f Mon Sep 17 00:00:00 2001
From: Zankaria <zankaria.auxa@mailu.io>
Date: Tue, 12 Nov 2024 14:50:39 +0100
Subject: [PATCH] functions.php: add has_any_history function

---
 inc/functions.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/inc/functions.php b/inc/functions.php
index 2328c1b7..0958e2cb 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -918,6 +918,26 @@ function checkBan($board = false) {
 	}
 }
 
+/**
+ * Checks if the given IP has any previous posts.
+ *
+ * @param string $ip The IP to check.
+ * @return bool True if the ip has already sent at least one post, false otherwise.
+ */
+function has_any_history(string $ip): bool {
+	foreach (listBoards(true) as $board_uri) {
+		$query = prepare(sprintf('SELECT `id` FROM ``posts_%s`` WHERE `ip` = :ip LIMIT 1', $board_uri));
+		$query->bindValue(':ip', $ip);
+		$query->execute() or error(db_error());
+
+		if ($query->fetchColumn() !== false) {
+			// Found a post.
+			return true;
+		}
+	}
+	return false;
+}
+
 function threadLocked($id) {
 	global $board;