diff --git a/php/ext/google/protobuf/array.c b/php/ext/google/protobuf/array.c
index 1ef72c4e40..70db6da988 100644
--- a/php/ext/google/protobuf/array.c
+++ b/php/ext/google/protobuf/array.c
@@ -459,29 +459,53 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_append, 0, 0, 1)
   ZEND_ARG_INFO(0, newval)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_offsetGet, 0, 0, IS_MIXED, 1)
+#if PHP_VERSION_ID < 70200
+ZEND_BEGIN_ARG_INFO_EX(arginfo_offsetExists, 0, 0, 1)
   ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_count, 0, 0, IS_LONG, 0)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_offsetGet, 0, 0, 1)
+  ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetSet, 0, 2, IS_VOID, 0)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_offsetSet, 0, 0, 2)
   ZEND_ARG_INFO(0, index)
   ZEND_ARG_INFO(0, newval)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetUnset, 0, 0, IS_VOID, 0)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_offsetUnset, 0, 0, 1)
   ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
+ZEND_BEGIN_ARG_INFO(arginfo_count, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO(arginfo_getIterator, 0)
+ZEND_END_ARG_INFO()
+#else
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetExists, 0, 0, _IS_BOOL, 0)
   ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_getIterator, 0, 0, Traversable, 0)
+ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_offsetGet, 0, 0, IS_MIXED, 1)
+  ZEND_ARG_INFO(0, index)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetSet, 0, 2, IS_VOID, 0)
+  ZEND_ARG_INFO(0, index)
+  ZEND_ARG_INFO(0, newval)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetUnset, 0, 0, IS_VOID, 0)
+  ZEND_ARG_INFO(0, index)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_count, 0, 0, IS_LONG, 0)
 ZEND_END_ARG_INFO()
 
+ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_getIterator, 0, 0, Traversable, 0)
+ZEND_END_ARG_INFO()
+#endif
 
 static zend_function_entry repeated_field_methods[] = {
   PHP_ME(RepeatedField, __construct,  arginfo_construct,    ZEND_ACC_PUBLIC)
@@ -628,6 +652,22 @@ PHP_METHOD(RepeatedFieldIter, valid) {
   RETURN_BOOL(intern->position < upb_array_size(field->array));
 }
 
+#if PHP_VERSION_ID < 70200
+ZEND_BEGIN_ARG_INFO(arginfo_current, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO(arginfo_key, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO(arginfo_next, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO(arginfo_valid, 0)
+ZEND_END_ARG_INFO()
+
+ZEND_BEGIN_ARG_INFO(arginfo_rewind, 0)
+ZEND_END_ARG_INFO()
+#else
 ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_current, 0, 0, IS_MIXED, 0)
 ZEND_END_ARG_INFO()
 
@@ -642,6 +682,7 @@ ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_rewind, 0, 0, IS_VOID, 0)
 ZEND_END_ARG_INFO()
+#endif
 
 static zend_function_entry repeated_field_iter_methods[] = {
   PHP_ME(RepeatedFieldIter, rewind,      arginfo_rewind, ZEND_ACC_PUBLIC)
diff --git a/php/ext/google/protobuf/map.c b/php/ext/google/protobuf/map.c
index 014e56afbd..859cc6d0c6 100644
--- a/php/ext/google/protobuf/map.c
+++ b/php/ext/google/protobuf/map.c
@@ -458,23 +458,23 @@ ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_offsetGet, 0, 0, IS_MI
   ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetSet, 0, 2, IS_VOID, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetSet, 0, 2, IS_VOID, 0, /*is_null*/ 0)
   ZEND_ARG_INFO(0, index)
   ZEND_ARG_INFO(0, newval)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetUnset, 0, 0, IS_VOID, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetUnset, 0, 0, IS_VOID, 0, /*is_null*/ 0)
   ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetExists, 0, 0, _IS_BOOL, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_offsetExists, 0, 0, _IS_BOOL, 0, /*is_null*/ 0)
   ZEND_ARG_INFO(0, index)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_getIterator, 0, 0, Traversable, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_count, 0, 0, IS_LONG, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_count, 0, 0, IS_LONG, 0, /*is_null*/ 0)
 ZEND_END_ARG_INFO()
 
 static zend_function_entry MapField_methods[] = {
@@ -624,7 +624,7 @@ PHP_METHOD(MapFieldIter, valid) {
   RETURN_BOOL(!done);
 }
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_rewind, 0, 0, IS_VOID, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_rewind, 0, 0, IS_VOID, 0, /*is_null*/ 0)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_current, 0, 0, IS_MIXED, 0)
@@ -633,10 +633,10 @@ ZEND_END_ARG_INFO()
 ZEND_BEGIN_ARG_WITH_TENTATIVE_RETURN_TYPE_INFO_EX(arginfo_key, 0, 0, IS_MIXED, 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_next, 0, 0, IS_VOID, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_next, 0, 0, IS_VOID, 0, /*is_null*/ 0)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_valid, 0, 0, _IS_BOOL, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_valid, 0, 0, _IS_BOOL, 0, /*is_null*/ 0)
 ZEND_END_ARG_INFO()
 
 static zend_function_entry map_field_iter_methods[] = {
diff --git a/php/ext/google/protobuf/package.xml b/php/ext/google/protobuf/package.xml
index 6516373f1b..12c899ef85 100644
--- a/php/ext/google/protobuf/package.xml
+++ b/php/ext/google/protobuf/package.xml
@@ -52,7 +52,7 @@
  <dependencies>
   <required>
    <php>
-    <min>7.2.0</min>
+    <min>7.0.0</min>
    </php>
    <pearinstaller>
     <min>1.4.0</min>
diff --git a/php/ext/google/protobuf/protobuf.h b/php/ext/google/protobuf/protobuf.h
index 3b145fafca..d5f8021888 100644
--- a/php/ext/google/protobuf/protobuf.h
+++ b/php/ext/google/protobuf/protobuf.h
@@ -82,6 +82,8 @@ const zval *get_generated_pool();
 // PHP 7.2.0.
 #if PHP_VERSION_ID < 70200
 #define zend_ce_countable spl_ce_Countable
+#define ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(name, return_reference, required_num_args, class_name, allow_null) \
+        ZEND_BEGIN_ARG_INFO_EX(name, return_reference, required_num_args, allow_null)
 #endif
 
 // In PHP 8.1, mismatched tentative return types emit a deprecation notice.
@@ -94,6 +96,16 @@ const zval *get_generated_pool();
 #define IS_MIXED 16
 #endif
 
+#if PHP_VERSION_ID < 70100
+#define IS_VOID 99
+#endif
+
+#ifndef IS_MIXED
+#define IS_MIXED 99
+#define IS_BOOL 99
+#define IS_LONG 99
+#endif
+
 ZEND_BEGIN_ARG_INFO(arginfo_void, 0)
 ZEND_END_ARG_INFO()