Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:62376
Return-Path: <petercowburn@gmail.com>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 71578 invoked from network); 21 Aug 2012 22:44:18 -0000
Received: from unknown (HELO lists.php.net) (127.0.0.1)
  by localhost with SMTP; 21 Aug 2012 22:44:18 -0000
Authentication-Results: pb1.pair.com header.from=petercowburn@gmail.com; sender-id=pass
Authentication-Results: pb1.pair.com smtp.mail=petercowburn@gmail.com; spf=pass; sender-id=pass
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 209.85.212.42 as permitted sender)
X-PHP-List-Original-Sender: petercowburn@gmail.com
X-Host-Fingerprint: 209.85.212.42 mail-vb0-f42.google.com  
Received: from [209.85.212.42] ([209.85.212.42:39810] helo=mail-vb0-f42.google.com)
	by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP
	id 70/7D-10139-24F04305 for <internals@lists.php.net>; Tue, 21 Aug 2012 18:44:18 -0400
Received: by vbbfs19 with SMTP id fs19so448977vbb.29
        for <internals@lists.php.net>; Tue, 21 Aug 2012 15:44:15 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to
         :cc:content-type;
        bh=8AOeX1GmNO3gNSfqIM6et502JiXIbHk9Gq2IR82xSpk=;
        b=U1p/neNO6dmPR/NNfM2ijmZNbYKroYmhCjEtUGwRALoDgYnEDMUnSfk25UjtXXvCYw
         uYHTXfYaseRZjP8a/8TjFJJRPlqaPJelSNrCLI1TaekWA+Wyt8uOIu4xB/donFA0B1w2
         Nmdnj/HCisK07cPpBjjkXF8eOMqQrQIVgCH7v3MBTYUlm0W8XVDaARmjdsLmYpNIsVAc
         3H2BcygDjsEIAUIubcjEPqGOTTu2asypDFeqTmWRexWN0ME6RnFErfFzcQN66hznAtAj
         XYbpifgJNfEDPQcpj6V1kxZ6onDfwkQ5xsL+K1w25VvrTMsqutc7Qhhf0l7Zqkj/xjF1
         IIMA==
Received: by 10.52.97.34 with SMTP id dx2mr12849933vdb.10.1345589055621; Tue,
 21 Aug 2012 15:44:15 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.52.114.230 with HTTP; Tue, 21 Aug 2012 15:43:35 -0700 (PDT)
In-Reply-To: <CAGa2bXa+wK8u+JTuOdAdaRbJduYXCqzkfqLvTBwVSiXMm5SrGw@mail.gmail.com>
References: <CADqTB_jyk7e8oZzxUQ42JA9PGjzgydddmsfwNx+6F-wD96mv6Q@mail.gmail.com>
 <CAArmra1XSnbQLSikM5yfhtYOtdZHNdwG5r1dAD6NmqVGO2St5w@mail.gmail.com>
 <CADqTB_iPJjPcQk9n_K3O5ccTMhkStw0Mw6GxSwFXYEuZ5tvbfQ@mail.gmail.com>
 <CAGa2bXbFyX0ienu2O4tn2Rn=2i2e-TG4YL9-4gnTjJxYTooKNA@mail.gmail.com>
 <CADqTB_hsMf6q8tdv9yzHTvkEqSjGPqWferJMv5Xx973iyQuP4A@mail.gmail.com>
 <CAHMUw2HE+ycKf0Mw5AFb7S37bi0dbSsFBwtM3wejGu6gfcgG-w@mail.gmail.com>
 <CAGa2bXarvVyzdg2npvyhRUTM+dDx_qB-M8y=PsjzNhJ_U57xvw@mail.gmail.com>
 <5033E0BC.8040507@ajf.me> <CAGa2bXYpyStxy=XstOiA1HLvx11naWB1kciX08o0kLKcptheEg@mail.gmail.com>
 <5033EAAB.6090502@ajf.me> <CAGa2bXaGMekwGw5FwPcRQ5wQdGBLvNJDMrooUxOn-Ca94D0AHA@mail.gmail.com>
 <5033F1EA.4070701@ajf.me> <CAGa2bXa7JRM08u8h0HnTny+Lx6in9-nQtS0x7cHGqa6kr=o9xw@mail.gmail.com>
 <5033FD9C.6080106@ajf.me> <CAGa2bXYfqUYG3z+4huptZj2BMkZ7y5GWAYb1XyGzRm00-Yw2oQ@mail.gmail.com>
 <5033FF96.5030105@ajf.me> <CAFMT4NrepX-gT60f_kzA5VKF4Uses1qT6fBiKawqv7QVtKpE_A@mail.gmail.com>
 <5034017E.1020002@ajf.me> <CAFMT4No50EN5UwWAm1814=jyOXAyRk0bD3K0+CoyJUWcjTLE_g@mail.gmail.com>
 <CAGa2bXacnjoOQ5+w-PwTnv5TXSeZ8yr+u+vOqcnp_0eu5VqkiA@mail.gmail.com>
 <CAGa2bXYPeZ2fs6BK2SfYmJFdp_z7DDNtSk5GTK2V1LQ0bysaHw@mail.gmail.com>
 <CAFMT4NpCbCjwAo-dqQ+qf0ooJX5VXtJijhfXDWf6QUPNqg07Sg@mail.gmail.com> <CAGa2bXa+wK8u+JTuOdAdaRbJduYXCqzkfqLvTBwVSiXMm5SrGw@mail.gmail.com>
Date: Tue, 21 Aug 2012 23:43:35 +0100
Message-ID: <CAPg3XxK40PPhceXpm1vV2UGJ=5LJC=1xYK7yVnLjxOxmJRaOSw@mail.gmail.com>
To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: Levi Morrison <morrison.levi@gmail.com>, Andrew Faulds <ajf@ajf.me>, 
	Tjerk Anne Meesters <datibbaw@php.net>, Rasmus Schultz <rasmus@mindplay.dk>, internals@lists.php.net
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [PHP-DEV] re: removing an item from an array
From: petercowburn@gmail.com (Peter Cowburn)

On 21 August 2012 23:26, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:
> array_walk is the best(fast and memory efficient) way
> to delete elements.

If array_walk() is the best (fast and memory efficient) way to delete
elements, why have we had the following line in the manual, for the
array_walk() callback, for over a decade [1]? (The exact phrasing has
changed slightly one time, but the message has remained the same)
"Only the values of the array may potentially be changed; its
structure cannot be altered, i.e., the programmer cannot add, unset or
reorder elements."

[1] http://svn.php.net/viewvc/?view=revision&revision=75124