From 234df4036e5a3707a50e7d4b3a2a8673545e7c09 Mon Sep 17 00:00:00 2001
From: arshidkv12 <arshidkv12@gmail.com>
Date: Mon, 25 May 2026 10:46:01 +0530
Subject: [PATCH 1/2] Fix assertion failure in zlib option parsing

---
 ext/zlib/tests/gh22142.phpt | 18 ++++++++++++++++++
 ext/zlib/zlib.c             | 11 +++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 ext/zlib/tests/gh22142.phpt

diff --git a/ext/zlib/tests/gh22142.phpt b/ext/zlib/tests/gh22142.phpt
new file mode 100644
index 000000000000..5cb9cfc018b8
--- /dev/null
+++ b/ext/zlib/tests/gh22142.phpt
@@ -0,0 +1,18 @@
+--TEST--
+GH-22142: deflate_init() handles undefined variable without assertion failure
+--FILE--
+<?php
+
+try {
+    $cls = new LibXMLError();
+    deflate_init($fusion, $cls);
+} catch (\Throwable $e) {
+    echo $e::class, ": ", $e->getMessage(), "\n";
+}
+
+?>
+--EXPECTF--
+Warning: Undefined variable $fusion in %s on line %d
+
+Deprecated: deflate_init(): Passing null to parameter #1 ($encoding) of type int is deprecated in %s on line %d
+TypeError: deflate_init(): Argument #2 ($options) the value for option "level" must be of type int, null given
\ No newline at end of file
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 3b987fa45e48..59672e5dd918 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -865,6 +865,17 @@ ZEND_ATTRIBUTE_NONNULL static bool zlib_get_long_option(HashTable *options, cons
 
 	/* The |H ZPP specifier may leave HashTable entries wrapped in IS_INDIRECT. */
 	ZVAL_DEINDIRECT(option_buffer);
+	if (UNEXPECTED(Z_TYPE_P(option_buffer) == IS_UNDEF)) {
+		zend_argument_type_error(
+			2,
+			"the value for option \"%.*s\" must be of type int, %s given",
+			(int) option_name_len,
+			option_name,
+			zend_zval_value_name(option_buffer)
+		);
+		return false;
+	}
+	
 	*value = zval_try_get_long(option_buffer, &failed);
 	if (UNEXPECTED(failed)) {
 		zend_argument_type_error(

From e339c64bd61c0a015aad82d5aa6524716a68ce5d Mon Sep 17 00:00:00 2001
From: arshidkv12 <arshidkv12@gmail.com>
Date: Mon, 25 May 2026 10:49:23 +0530
Subject: [PATCH 2/2] Fix assertion failure in zlib option parsing

---
 ext/zlib/tests/gh22142.phpt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/zlib/tests/gh22142.phpt b/ext/zlib/tests/gh22142.phpt
index 5cb9cfc018b8..8632146dade6 100644
--- a/ext/zlib/tests/gh22142.phpt
+++ b/ext/zlib/tests/gh22142.phpt
@@ -15,4 +15,4 @@ try {
 Warning: Undefined variable $fusion in %s on line %d
 
 Deprecated: deflate_init(): Passing null to parameter #1 ($encoding) of type int is deprecated in %s on line %d
-TypeError: deflate_init(): Argument #2 ($options) the value for option "level" must be of type int, null given
\ No newline at end of file
+TypeError: deflate_init(): Argument #2 ($options) the value for option "level" must be of type int, null given