diff --git a/ext/intl/formatter/formatter_parse.c b/ext/intl/formatter/formatter_parse.c
index de3b8191e9e..99399006504 100644
--- a/ext/intl/formatter/formatter_parse.c
+++ b/ext/intl/formatter/formatter_parse.c
@@ -135,7 +135,7 @@ PHP_FUNCTION( numfmt_parse_currency )
 	FORMATTER_METHOD_INIT_VARS;
 
 	/* Parse parameters. */
-	if( zend_parse_method_parameters( ZEND_NUM_ARGS(), getThis(), "Osz/|z!",
+	if( zend_parse_method_parameters( ZEND_NUM_ARGS(), getThis(), "Osz|z!",
 		&object, NumberFormatter_ce_ptr,  &str, &str_len, &zcurrency, &zposition ) == FAILURE )
 	{
 		RETURN_THROWS();
@@ -165,8 +165,7 @@ PHP_FUNCTION( numfmt_parse_currency )
 	/* Convert parsed currency to UTF-8 and pass it back to caller. */
 	u8str = intl_convert_utf16_to_utf8(currency, u_strlen(currency), &INTL_DATA_ERROR_CODE(nfo));
 	INTL_METHOD_CHECK_STATUS( nfo, "Currency conversion to UTF-8 failed" );
-	zval_ptr_dtor( zcurrency );
-	ZVAL_NEW_STR(zcurrency, u8str);
+	ZEND_TRY_ASSIGN_REF_NEW_STR(zcurrency, u8str);
 
 	RETVAL_DOUBLE( number );
 }
diff --git a/ext/intl/grapheme/grapheme_string.c b/ext/intl/grapheme/grapheme_string.c
index bfc352bdca2..9bc7796cc35 100644
--- a/ext/intl/grapheme/grapheme_string.c
+++ b/ext/intl/grapheme/grapheme_string.c
@@ -734,15 +734,10 @@ PHP_FUNCTION(grapheme_extract)
 	}
 
 	if ( NULL != next ) {
-		if ( !Z_ISREF_P(next) ) {
-			intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
-				 "grapheme_extract: 'next' was not passed by reference", 0 );
-			RETURN_FALSE;
-		} else {
-			ZVAL_DEREF(next);
-			/* initialize next */
-			zval_ptr_dtor(next);
-			ZVAL_LONG(next, lstart);
+		ZEND_ASSERT(Z_ISREF_P(next));
+		ZEND_TRY_ASSIGN_REF_LONG(next, lstart);
+		if (UNEXPECTED(EG(exception))) {
+			RETURN_THROWS();
 		}
 	}
 
@@ -800,7 +795,7 @@ PHP_FUNCTION(grapheme_extract)
 	if ( -1 != grapheme_ascii_check((unsigned char *)pstr, MIN(size + 1, str_len)) ) {
 		size_t nsize = MIN(size, str_len);
 		if ( NULL != next ) {
-			ZVAL_LONG(next, start+nsize);
+			ZEND_TRY_ASSIGN_REF_LONG(next, start + nsize);
 		}
 		RETURN_STRINGL(pstr, nsize);
 	}
@@ -834,7 +829,7 @@ PHP_FUNCTION(grapheme_extract)
 	ubrk_close(bi);
 
 	if ( NULL != next ) {
-		ZVAL_LONG(next, start+ret_pos);
+		ZEND_TRY_ASSIGN_REF_LONG(next, start + ret_pos);
 	}
 
 	RETURN_STRINGL(((char *)pstr), ret_pos);
diff --git a/ext/intl/tests/grapheme_extract_references.phpt b/ext/intl/tests/grapheme_extract_references.phpt
new file mode 100644
index 00000000000..33368279a1a
--- /dev/null
+++ b/ext/intl/tests/grapheme_extract_references.phpt
@@ -0,0 +1,19 @@
+--TEST--
+grapheme_extract() references handling
+--EXTENSIONS--
+intl
+--FILE--
+<?php
+class Test {
+    public string $prop = "a";
+}
+$test = new Test;
+$next =& $test->prop;
+grapheme_extract("test", 4, next: $next);
+var_dump($test);
+?>
+--EXPECT--
+object(Test)#1 (1) {
+  ["prop"]=>
+  &string(1) "4"
+}
diff --git a/ext/intl/tests/intltz_get_canonical_id_refs.phpt b/ext/intl/tests/intltz_get_canonical_id_refs.phpt
new file mode 100644
index 00000000000..973b7006c7d
--- /dev/null
+++ b/ext/intl/tests/intltz_get_canonical_id_refs.phpt
@@ -0,0 +1,19 @@
+--TEST--
+IntlTimeZone::getCanonicalID: refs test
+--EXTENSIONS--
+intl
+--FILE--
+<?php
+class Test {
+    public string $prop = "a";
+}
+$test = new Test;
+$ref =& $test->prop;
+print_R(intltz_get_canonical_id('Portugal', $ref));
+var_dump($test);
+?>
+--EXPECT--
+Europe/Lisbonobject(Test)#1 (1) {
+  ["prop"]=>
+  &string(1) "1"
+}
diff --git a/ext/intl/tests/numfmt_parse_currency_references.phpt b/ext/intl/tests/numfmt_parse_currency_references.phpt
new file mode 100644
index 00000000000..06427a73693
--- /dev/null
+++ b/ext/intl/tests/numfmt_parse_currency_references.phpt
@@ -0,0 +1,20 @@
+--TEST--
+numfmt_parse_currency() reference handling
+--EXTENSIONS--
+intl
+--FILE--
+<?php
+class Test {
+    public int $prop = 1;
+}
+$test = new Test;
+$fmt = numfmt_create( 'de_DE', NumberFormatter::CURRENCY );
+$num = "1\xc2\xa0$";
+try {
+    numfmt_parse_currency($fmt, $num, $test->prop);
+} catch (TypeError $e) {
+    echo $e->getMessage(), "\n";
+}
+?>
+--EXPECT--
+Cannot assign string to reference held by property Test::$prop of type int
diff --git a/ext/intl/timezone/timezone_methods.cpp b/ext/intl/timezone/timezone_methods.cpp
index 5d0a7dc445a..f652e9000c4 100644
--- a/ext/intl/timezone/timezone_methods.cpp
+++ b/ext/intl/timezone/timezone_methods.cpp
@@ -286,9 +286,7 @@ U_CFUNC PHP_FUNCTION(intltz_get_canonical_id)
 	RETVAL_NEW_STR(u8str);
 
 	if (is_systemid) { /* by-ref argument passed */
-		ZVAL_DEREF(is_systemid);
-		zval_ptr_dtor(is_systemid);
-		ZVAL_BOOL(is_systemid, isSystemID);
+		ZEND_TRY_ASSIGN_REF_BOOL(is_systemid, isSystemID);
 	}
 }