Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:117157 Return-Path: Delivered-To: mailing list internals@lists.php.net Received: (qmail 45920 invoked from network); 27 Feb 2022 21:42:43 -0000 Received: from unknown (HELO php-smtp4.php.net) (45.112.84.5) by pb1.pair.com with SMTP; 27 Feb 2022 21:42:43 -0000 Received: from php-smtp4.php.net (localhost [127.0.0.1]) by php-smtp4.php.net (Postfix) with ESMTP id 4CD45180381 for ; Sun, 27 Feb 2022 15:03:32 -0800 (PST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on php-smtp4.php.net X-Spam-Level: X-Spam-Status: No, score=-0.2 required=5.0 tests=BAYES_20,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,HTML_MESSAGE, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 X-Spam-ASN: AS15169 209.85.128.0/17 X-Spam-Virus: No X-Envelope-From: Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by php-smtp4.php.net (Postfix) with ESMTPS for ; Sun, 27 Feb 2022 15:03:31 -0800 (PST) Received: by mail-wm1-f44.google.com with SMTP id i19so4720078wmq.5 for ; Sun, 27 Feb 2022 15:03:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=kEqh/Ew2oNpfhSAhIL9UGIgkR9YrC+SChgQlFQfZLv8=; b=lwtJ8t3aCDV621ZrVSKZKjGKsbTxqtP6pw3Fx6LPwCBsikTSJ8MwFxHE/iwB3oLm4P iwPSfGDJ8eTl24WCeNHYHz7o8VbDkJweCS5rDiNECbUHRcsHAiCyed0kdLFlanyVPoac 3XVID9/gSFQfjYWNXVZ7Qvso9Nqq1qRGPxFijbF7YI5otHr6lnGZ6lCAXLLCrcG+WL0d WulRk2mLdiSSAT15WvRUEwbppQaHdtVkvYbEa5m5UZydh1MPGAxkxXOS2U6Jh2OgvuhW zm6GEQtdnV5J7cw8v4I6nQ6TBLRRaMi+w5Cx7pJU3aNpmDZGpODbbrKqke+r+z9ZFz0a k1dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=kEqh/Ew2oNpfhSAhIL9UGIgkR9YrC+SChgQlFQfZLv8=; b=JcnVKqapcKL3e5J/HB1d78p7O465fNQMVabf+f9hdHCWkHl+uOhB0w93BXq7ougB8t blA1adYOsugNqw/YAEzFHv4ezQfgrV9TC52kpx0actwT79A3bvo0qfM4RQbIguuDMlwz +js/lMoR3O0udoZr1IoveoQuUabbl/63zdSjx1rKqPqH541ZwnDCzhG62haCrnxHS8u/ qshC/uSlKq9k9kr+bDZ6ICMDCaJU4fDyRdSFY+l8EqA8xDW5NAdjJiJKVNVXmG7h9BlY 5vLDlAQycpIbu5D+E1DCYROkogzGGOyJpCNhpZUUgtce4JWPdkv/2uJZ3XIFCht/q/TN uJGg== X-Gm-Message-State: AOAM531kY6ZcwpbWF52B6Hjd198VZTLuEveHGaaOvn5milDqB+KhkPGz vTTDmLzuWodnmjS1wBGBhJM= X-Google-Smtp-Source: ABdhPJzi0dHFaMIAAn4cF9BM0enhj1nIyIRlnw000rVOt2qkgbmMnu5DymwPTJqNDEm6G7MEqbUCPA== X-Received: by 2002:a05:600c:4151:b0:381:4bed:a355 with SMTP id h17-20020a05600c415100b003814beda355mr6072217wmm.135.1646003010340; Sun, 27 Feb 2022 15:03:30 -0800 (PST) Received: from [172.20.10.2] (255.234.197.178.dynamic.wless.lssmb00p-cgnat.res.cust.swisscom.ch. [178.197.234.255]) by smtp.gmail.com with ESMTPSA id h9-20020adff189000000b001ea913352c9sm8718721wro.100.2022.02.27.15.03.28 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 27 Feb 2022 15:03:29 -0800 (PST) Message-ID: Content-Type: multipart/alternative; boundary="Apple-Mail=_A2EB17AD-A293-4D98-8862-0669AA447B25" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.7\)) Date: Mon, 28 Feb 2022 00:03:27 +0100 In-Reply-To: Cc: Mel Dafert , internals , Kamil Tekiela To: Robert Landers References: <621a56dd.1c69fb81.67b1.242aSMTPIN_ADDED_MISSING@mx.google.com> <2CEDDAE8-76CF-4380-9E5A-0841EDD0B0C4@dafert.at> X-Mailer: Apple Mail (2.3608.120.23.2.7) Subject: Re: [PHP-DEV] Proposal for RFC to remove undefined array index warning when used ina ternary From: claude.pache@gmail.com (Claude Pache) --Apple-Mail=_A2EB17AD-A293-4D98-8862-0669AA447B25 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > Le 27 f=C3=A9vr. 2022 =C3=A0 18:06, Robert Landers = a =C3=A9crit : >=20 >> $val =3D $array[?'a'][?'b'][?'c'] ?? 'default'; >>=20 >> Currently, the last example would need to be a rather unwieldy = ternary: >>=20 >> $val =3D (isset($array['a']) && isset($array['a']['b']) && >> isset($array['a']['b']['c']) ? $array['a']['b']['c'] : 'default'; >>=20 >=20 > I've been writing it like this: >=20 > $val =3D (($array['a'] ?? [])['b'] ?? [])['c'] ?? 'default'; >=20 > which is still unwieldy. I don't actually know if it is required to = use [] > vs. null, but it makes sense to use an empty array to me. >=20 Hi, In PHP, you can write `$array['a']['b']['c'] ?? 'default';`. It works = when either null or inexistant index is encountered at any depth of the = expression. =E2=80=94Claude= --Apple-Mail=_A2EB17AD-A293-4D98-8862-0669AA447B25--