diff --git a/ext/sqlite3/tests/sqlite3_trampoline_create_aggregate_no_leak.phpt b/ext/sqlite3/tests/sqlite3_trampoline_create_aggregate_no_leak.phpt
new file mode 100644
index 0000000000000..cda9eee278f0f
--- /dev/null
+++ b/ext/sqlite3/tests/sqlite3_trampoline_create_aggregate_no_leak.phpt
@@ -0,0 +1,75 @@
+--TEST--
+SQLite3::createAggregate() trampoline callback
+--EXTENSIONS--
+sqlite3
+--FILE--
+<?php
+
+require_once(__DIR__ . '/new_db.inc');
+
+class TrampolineTest {
+    public function __call(string $name, array $arguments) {
+        echo 'Trampoline for ', $name, PHP_EOL;
+        $context = $arguments[0];
+        if ($name === 'finalize') {
+            return implode(',', $context['values']);
+        }
+        if (empty($context)) {
+            $context = ['total' => 0, 'values' => []];
+        }
+        $context['total'] += (int) $arguments[2];
+        $context['values'][] = $context['total'];
+        return $context;
+    }
+}
+$o = new TrampolineTest();
+$step = [$o, 'step'];
+$finalize = [$o, 'finalize'];
+
+echo "Creating Table\n";
+var_dump($db->exec('CREATE TABLE test (a INTEGER, b INTEGER)'));
+
+echo "INSERT into table\n";
+var_dump($db->exec("INSERT INTO test (a, b) VALUES (1, -1)"));
+var_dump($db->exec("INSERT INTO test (a, b) VALUES (2, -2)"));
+var_dump($db->exec("INSERT INTO test (a, b) VALUES (3, -3)"));
+var_dump($db->exec("INSERT INTO test (a, b) VALUES (4, -4)"));
+var_dump($db->exec("INSERT INTO test (a, b) VALUES (4, -4)"));
+
+$db->createAggregate('S', $step, $finalize, 1);
+
+print_r($db->querySingle("SELECT S(a), S(b) FROM test", true));
+
+echo "Closing database\n";
+var_dump($db->close());
+echo "Done\n";
+?>
+--EXPECT--
+Creating Table
+bool(true)
+INSERT into table
+bool(true)
+bool(true)
+bool(true)
+bool(true)
+bool(true)
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for step
+Trampoline for finalize
+Trampoline for finalize
+Array
+(
+    [S(a)] => 1,3,6,10,14
+    [S(b)] => -1,-3,-6,-10,-14
+)
+Closing database
+bool(true)
+Done
diff --git a/ext/sqlite3/tests/sqlite3_trampoline_createcollation_no_leak.phpt b/ext/sqlite3/tests/sqlite3_trampoline_createcollation_no_leak.phpt
new file mode 100644
index 0000000000000..cf4f00b783829
--- /dev/null
+++ b/ext/sqlite3/tests/sqlite3_trampoline_createcollation_no_leak.phpt
@@ -0,0 +1,33 @@
+--TEST--
+SQLite3::createFunction use F ZPP for trampoline callback and does not leak
+--EXTENSIONS--
+sqlite3
+--FILE--
+<?php
+
+require_once(__DIR__ . '/new_db.inc');
+
+class TrampolineTest {
+    public function __call(string $name, array $arguments) {
+        echo 'Trampoline for ', $name, PHP_EOL;
+        return strtoupper($arguments[0]);
+    }
+}
+$o = new TrampolineTest();
+$callback = [$o, 'strtoupper'];
+
+var_dump($db->createfunction('', $callback));
+
+try {
+    var_dump($db->createfunction('strtoupper', $callback, new stdClass()));
+} catch (\Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+
+var_dump($db->createfunction('strtoupper', $callback));
+
+?>
+--EXPECT--
+bool(false)
+TypeError: SQLite3::createFunction(): Argument #3 ($argCount) must be of type int, stdClass given
+bool(true)
diff --git a/ext/sqlite3/tests/sqlite3_trampoline_createfunction_no_leak.phpt b/ext/sqlite3/tests/sqlite3_trampoline_createfunction_no_leak.phpt
new file mode 100644
index 0000000000000..cf4f00b783829
--- /dev/null
+++ b/ext/sqlite3/tests/sqlite3_trampoline_createfunction_no_leak.phpt
@@ -0,0 +1,33 @@
+--TEST--
+SQLite3::createFunction use F ZPP for trampoline callback and does not leak
+--EXTENSIONS--
+sqlite3
+--FILE--
+<?php
+
+require_once(__DIR__ . '/new_db.inc');
+
+class TrampolineTest {
+    public function __call(string $name, array $arguments) {
+        echo 'Trampoline for ', $name, PHP_EOL;
+        return strtoupper($arguments[0]);
+    }
+}
+$o = new TrampolineTest();
+$callback = [$o, 'strtoupper'];
+
+var_dump($db->createfunction('', $callback));
+
+try {
+    var_dump($db->createfunction('strtoupper', $callback, new stdClass()));
+} catch (\Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
+
+var_dump($db->createfunction('strtoupper', $callback));
+
+?>
+--EXPECT--
+bool(false)
+TypeError: SQLite3::createFunction(): Argument #3 ($argCount) must be of type int, stdClass given
+bool(true)
diff --git a/ext/sqlite3/tests/sqlite3_trampoline_setauthorizer_no_leak.phpt b/ext/sqlite3/tests/sqlite3_trampoline_setauthorizer_no_leak.phpt
new file mode 100644
index 0000000000000..9a89d36f8e688
--- /dev/null
+++ b/ext/sqlite3/tests/sqlite3_trampoline_setauthorizer_no_leak.phpt
@@ -0,0 +1,41 @@
+--TEST--
+SQLite3 user authorizer trampoline callback
+--EXTENSIONS--
+sqlite3
+--FILE--
+<?php
+
+class TrampolineTest {
+    public function __call(string $name, array $arguments) {
+        echo 'Trampoline for ', $name, PHP_EOL;
+        if ($arguments[0] == SQLite3::SELECT) {
+            return SQLite3::OK;
+        }
+
+        return SQLite3::DENY;
+    }
+}
+$o = new TrampolineTest();
+$callback = [$o, 'authorizer'];
+
+$db = new SQLite3(':memory:');
+$db->enableExceptions(true);
+
+$db->setAuthorizer($callback);
+
+// This query should be accepted
+var_dump($db->querySingle('SELECT 1;'));
+
+try {
+    // This one should fail
+    var_dump($db->querySingle('CREATE TABLE test (a, b);'));
+} catch (\Exception $e) {
+    echo $e->getMessage() . "\n";
+}
+
+?>
+--EXPECT--
+Trampoline for authorizer
+int(1)
+Trampoline for authorizer
+Unable to prepare statement: not authorized