Use zend_value_error.

Author: kohler

ext/hash/hash.c

@@ -1423,7 +1423,7 @@ PHP_METHOD(HashContext, __serialize)
 	return;
 
 serialize_failure:
-	zend_throw_exception_ex(spl_ce_UnexpectedValueException, 0, "HashContext for algorithm '%s' cannot be serialized", hash->ops->algo);
+	zend_value_error("HashContext for algorithm '%s' cannot be serialized", hash->ops->algo);
 	RETURN_THROWS();
 }
 /* }}} */
@@ -1461,7 +1461,7 @@ PHP_METHOD(HashContext, __unserialize)
 		|| !options_zv || Z_TYPE_P(options_zv) != IS_LONG
 		|| !hash_zv
 		|| !members_zv || Z_TYPE_P(members_zv) != IS_ARRAY) {
-		zend_throw_exception_ex(spl_ce_UnexpectedValueException, 0, "Incomplete or ill-formed serialization data");
+		zend_value_error("Incomplete or ill-formed serialization data");
 		RETURN_THROWS();
 	}
 
@@ -1470,15 +1470,15 @@ PHP_METHOD(HashContext, __unserialize)
 
 	ops = php_hash_fetch_ops(Z_STR_P(algo_zv));
 	if (!ops) {
-		zend_throw_exception(spl_ce_UnexpectedValueException, "Unknown hash algorithm", 0);
+		zend_value_error("Unknown hash algorithm");
 		RETURN_THROWS();
 	} else if (!ops->hash_unserialize) {
-		zend_throw_exception_ex(spl_ce_UnexpectedValueException, 0, "Hash algorithm '%s' cannot be unserialized", ops->algo);
+		zend_value_error("Hash algorithm '%s' cannot be unserialized", ops->algo);
 		RETURN_THROWS();
 	} else if ((options & PHP_HASH_HMAC)
 			&& (!key_zv || Z_TYPE_P(key_zv) != IS_STRING
 				|| Z_STRLEN_P(key_zv) != ops->block_size)) {
-		zend_throw_exception(spl_ce_UnexpectedValueException, "Incomplete or ill-formed serialization data", 0);
+		zend_value_error("Incomplete or ill-formed serialization data");
 		RETURN_THROWS();
 	}
 
@@ -1488,7 +1488,7 @@ PHP_METHOD(HashContext, __unserialize)
 	hash->options = zval_get_long(options_zv);
 
 	if (ops->hash_unserialize(hash, magic, hash_zv) != SUCCESS) {
-		zend_throw_exception_ex(spl_ce_UnexpectedValueException, 0, "HashContext for algorithm '%s' cannot be unserialized, format may be non-portable", ops->algo);
+		zend_value_error("HashContext for algorithm '%s' cannot be unserialized, format may be non-portable", ops->algo);
 		RETURN_THROWS();
 	}