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Thu, 3 Dec 2020 02:14:25 +0000 Received: from DM6PR07MB6618.namprd07.prod.outlook.com ([fe80::d99c:15a8:f595:d00]) by DM6PR07MB6618.namprd07.prod.outlook.com ([fe80::d99c:15a8:f595:d00%7]) with mapi id 15.20.3632.019; Thu, 3 Dec 2020 02:14:25 +0000 To: Nikita Popov , PHP internals Thread-Topic: [PHP-DEV] [RFC] Deprecate passing null to non-nullable arguments of internal functions Thread-Index: AQHWx/JtkhibF0GtGEqDxnzjzXkt2ankoqw2 Date: Thu, 3 Dec 2020 02:14:25 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-CA, en-US Content-Language: en-CA X-MS-Has-Attach: X-MS-TNEF-Correlator: x-incomingtopheadermarker: OriginalChecksum:32A1C47BEE8F64A5532E5864C0D8CAD0FBFE9C3D83F41129C162BFC2C09598FB;UpperCasedChecksum:BC711BA8DBA3B65FBAA54C6C0CDC841278569025F54D6A866036F5DEB2745026;SizeAsReceived:7137;Count:44 x-ms-exchange-messagesentrepresentingtype: 1 x-tmn: [hAl7fvcGyLHp9jvt2k+UKyIk4XAj5bU/S0kM666Iso1cfueopvuck2Xs6oSRK9OD] x-ms-publictraffictype: Email x-incomingheadercount: 44 x-eopattributedmessage: 0 x-ms-office365-filtering-correlation-id: 26251464-20de-4ece-c8ca-08d89731283a x-ms-traffictypediagnostic: MW2NAM12HT251: x-ms-exchange-minimumurldomainage: php.net#8416 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 49McWHMr4muCZfl5KWWqC9bnz9Zd2YFTugw4E5nodPG02+R2DY5XqiDsM1E+kgc/latEuNDHhY8rs4w0p6ry1Hki286rENNwdGqzgcGgSgQSnDcA2atElWq+IBAY6Pg83HMFMqhJKVehISGdG5Gra6CyeFBnxZ1GIpWIfXw5zDaXs17lsv7E3kp/+ezJVH+25mA1rrvOzI7LbvFtQ+O14myzKxL41pffk0eMGqitnU43LvNrXARBtS0ufmWazpG3 x-ms-exchange-antispam-messagedata: BKclx7CHVXg7V8Q4fKVtDl2Q4UhvL0rR5vF1qpfBF2POSUG1WFUVk3lsvFgKCo6OLJZGYej0c2CIPOn2HVg6uZeXQlyiJGLB2k4Ktx4fitD9bkWiMSoax1CHEC3h0Z8T2ZO71RLaw0ahbCJRe/rS9QkPjh5lZRnsAAwjBzLgKQuabHQ6ZV+Hi7LwodIIFsPueoC0IR6z0VHuZhIHIDt/Mg== x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-AuthSource: MW2NAM12FT043.eop-nam12.prod.protection.outlook.com X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-CrossTenant-Network-Message-Id: 26251464-20de-4ece-c8ca-08d89731283a X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Dec 2020 02:14:25.6438 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2NAM12HT251 Subject: Re: [PHP-DEV] [RFC] Deprecate passing null to non-nullable arguments of internal functions From: tysonandre775@hotmail.com (tyson andre) Hi Nikita,=0A= =0A= > I've put up an RFC to make the handling of "null" arguments consistent=0A= > between internal and user-defined functions:=0A= > =0A= > https://wiki.php.net/rfc/deprecate_null_to_scalar_internal_arg=0A= > =0A= > I started an informal discussion for this change during the 7.4 cycle=0A= > already, but decided to postpone the change at the time.=0A= =0A= Sounds like a good idea - available open source static analyzers are much b= etter than they were when php 7.0.0 was released,=0A= and php now has nullable types, union types and property types.=0A= =0A= E.g. Phan already warns about passing null/nullable to internal functions a= s strictly as user-defined functions,=0A= partly because I'd assumed internal functions would change in the future.= =0A= https://phan.github.io/demo/?code=3D%3C%3Fphp%0Afunction+test%28%3Fstring+%= 24str%29+%7B%0A++++return+strlen%28%24str%29+%2B+strlen%28null%29%3B%0A%7D= =0A= (10MB webassembly demo)=0A= =0A= Regards,=0A= Tyson=