Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:111022 Return-Path: Delivered-To: mailing list internals@lists.php.net Received: (qmail 17605 invoked from network); 15 Jul 2020 16:19:21 -0000 Received: from unknown (HELO php-smtp4.php.net) (45.112.84.5) by pb1.pair.com with SMTP; 15 Jul 2020 16:19:21 -0000 Received: from php-smtp4.php.net (localhost [127.0.0.1]) by php-smtp4.php.net (Postfix) with ESMTP id 0A93018053E for ; Wed, 15 Jul 2020 08:12:03 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on php-smtp4.php.net X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,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-Virus: No X-Envelope-From: Received: from mail-lf1-f41.google.com (mail-lf1-f41.google.com [209.85.167.41]) (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 ; Wed, 15 Jul 2020 08:12:02 -0700 (PDT) Received: by mail-lf1-f41.google.com with SMTP id s16so1246756lfp.12 for ; Wed, 15 Jul 2020 08:12:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=NRczjbZAnbtO1W2Alnf/6e3E/eGmEvLh4sjEpadAXN0=; b=ILj4ZSDJrHQ9nyYUdTYW2Vw2F3jI2BE8wmt+roqPpZfbutYgRlbSDVKQErc9TWOu6v iqZGJG1Q0jjDiehwmEuJku3te3+mn+3e1sha7ZcPepD4035U63Sqzb/3IWGVKhgtH4wT eMXdhvJzllebJDewqPusgD18wIPIyCKzSljAmBI3f0LKaHDL17XaBWESfPMG3pOXLuky XfiDaPLpAQANsXYJ4wPANgvmxq/zQwMVpzvN2bV8cd094j4PvN4NBAjys0dpMLpcsuVj BumLo0RGyaRP2sGRGA0EQM8JZ1yhcqQm/2qVJby7Amyw5V9HmtpLR+TH9e1AqzLhlAAe ttLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=NRczjbZAnbtO1W2Alnf/6e3E/eGmEvLh4sjEpadAXN0=; b=OLGKOfrN3Cwq2lYXNkIoQV9LEo4F46rcdM3sbkGQK8F3jszHMNKT45kpQ/as9D4xjE OMAohvEqY22HXcG4vcyOqHusapLk8QxA4EcJnRklptakQJEZYvMnPQAyN/sY1zTxkqof 4C8c8ps5z+dtc06I+4HB5pWXDeK4NFDFFLVH2VHp/R0SF8cyP7r4lZuqzvOi8RZVyfD4 s8AhFXkG7GwzsFa6/YBA+aJ2+3Xn72VaRKK/jVlfaZFLibmg0LLarI07097V/bB7+GRa SIumOZevHMGQ9nY5lTe485qL9QQJaFVUAcGT4K8BmhIfpFoHGZ2wr+/TrUQmGxNeqgp0 VADw== X-Gm-Message-State: AOAM531BVTZ2wdI2udfHE5mFhrxv3J5lVbpPVh6jT57ypFjMfrqprW2Q Q1hQSXma+Iz4gXYYz+OWxYfWvG2Uc9vWUPiZzLk= X-Google-Smtp-Source: ABdhPJwOizvAPZMVehu2DYwRm26u4Tfk36x0/7yrrOKxVZsMWx3VZRO0W6cEfGO+6HHPodVS9o6sVjDxzg2GrWr4btQ= X-Received: by 2002:a19:604f:: with SMTP id p15mr5120986lfk.59.1594825920161; Wed, 15 Jul 2020 08:12:00 -0700 (PDT) MIME-Version: 1.0 References: <529e7a72-8bd7-b4f4-a987-0e88d37e47b5@telia.com> <44637D3E-5F0B-4AEF-A154-21C8FF20ED91@stitcher.io> <35A1BC6F-D147-4692-8A12-A13B5ABF78D5@stitcher.io> In-Reply-To: Date: Wed, 15 Jul 2020 17:11:48 +0200 Message-ID: To: Nikita Popov , PHP Internals Content-Type: multipart/alternative; boundary="000000000000732ad105aa7c5827" Subject: Re: [PHP-DEV] [RFC] Saner string to number comparisons From: arnold.adaniels.nl@gmail.com (Arnold Daniels) --000000000000732ad105aa7c5827 Content-Type: text/plain; charset="UTF-8" Hi Nikita, One of the problems with numeric string comparisons is that it might interpret a hexadecimal value as scientific notation $red = '990000'; $purple = '9900e2'; $red == $purple; // true I suggest only interpreting a number formatted with a sign ("1e+100") or with decimals ("1.0e100") as scientific notation as part of this RFC. These are the notations that languages use when casting a float to a string, never "1e100" PHP "1.0E+100" JavaScript "1e+100" Python "1e+100" Ruby "1.0e+100" Java "1.0E100" Arnold --000000000000732ad105aa7c5827--