diff -ruN php-7.3.33-orig/ext/openssl/openssl.c php-7.3.33/ext/openssl/openssl.c
--- php-7.3.33-orig/ext/openssl/openssl.c	2021-11-16 19:18:32.000000000 +0800
+++ php-7.3.33/ext/openssl/openssl.c	2022-03-09 21:27:18.648388084 +0800
@@ -1488,7 +1488,9 @@
 	REGISTER_LONG_CONSTANT("PKCS7_NOSIGS", PKCS7_NOSIGS, CONST_CS|CONST_PERSISTENT);
 
 	REGISTER_LONG_CONSTANT("OPENSSL_PKCS1_PADDING", RSA_PKCS1_PADDING, CONST_CS|CONST_PERSISTENT);
+#ifdef RSA_SSLV23_PADDING
 	REGISTER_LONG_CONSTANT("OPENSSL_SSLV23_PADDING", RSA_SSLV23_PADDING, CONST_CS|CONST_PERSISTENT);
+#endif
 	REGISTER_LONG_CONSTANT("OPENSSL_NO_PADDING", RSA_NO_PADDING, CONST_CS|CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("OPENSSL_PKCS1_OAEP_PADDING", RSA_PKCS1_OAEP_PADDING, CONST_CS|CONST_PERSISTENT);