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Tue, 10 Sep 2024 18:50:35 -0700 (PDT) Content-Type: multipart/signed; boundary="Apple-Mail=_4D989BF5-FEA8-4E8F-A941-82A4FD38F0E8"; protocol="application/pkcs7-signature"; micalg=sha-256 Precedence: bulk list-help: list-post: List-Id: internals.lists.php.net x-ms-reactions: disallow Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3776.700.51\)) Subject: [PHP-DEV] Proposal for New Feature: Multi-level Directory Navigation Function Message-ID: <67337073-F5EE-4432-AC61-2A4CC086E12B@gmail.com> Date: Tue, 10 Sep 2024 18:50:24 -0700 To: internals@lists.php.net X-Mailer: Apple Mail (2.3776.700.51) From: danielbaldwin@gmail.com (Daniel Baldwin) --Apple-Mail=_4D989BF5-FEA8-4E8F-A941-82A4FD38F0E8 Content-Type: multipart/alternative; boundary="Apple-Mail=_BF97247D-AF75-4097-807B-06E4B02815DD" --Apple-Mail=_BF97247D-AF75-4097-807B-06E4B02815DD Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hello, I=E2=80=99m a full stack developer and owner of Truecast that lives in = Holley, Oregon, USA.=20 Introduction Navigating up multiple directory levels is a common requirement in PHP = applications, especially when managing paths in complex projects. = Currently, this is achieved by chaining calls to the dirname() function. = This method, while functional, can become cumbersome and less readable = with increasing directory depth. Proposed Feature I propose the introduction of a new function, upDir(), which simplifies = the process of moving up multiple directory levels in a file path. This = function extends the utility of the existing dirname() by allowing a = user to specify the number of directory levels they wish to ascend in a = single function call. Function Prototype: function upDir(int $levels =3D 1, string $path =3D __DIR__): string Function Example: function upDir(int $levels =3D 1, string $path =3D null) { if ($path =3D=3D=3D null)=20 $path =3D __DIR__; =20 for ($i =3D 0; $i < $levels; $i++) $path =3D dirname($path); =20 return $path; } require upDir(4).'/init.php'; Parameters: path: The input path. levels: The number of parent directories to ascend. Return: Returns the path of the parent directory after ascending the specified = levels. Benefits Improved Readability: Reduces the complexity and improves the = readability of the code, making it easier to understand at a glance, = especially when dealing with multiple nested directories. Error Reduction: Decreases the likelihood of errors that can occur from = multiple chained dirname() calls, like miscounting the number of calls = needed. Efficiency: Potentially increases efficiency by reducing the number of = function calls in a script. Potential Issues and Considerations Backward Compatibility: The function would be an addition to the = existing PHP functions and is not expected to affect backward = compatibility. Performance: Initial benchmarks would need to be conducted to compare = its performance against repeated dirname() calls to ensure there are no = significant overheads. Naming and Parameters: Further discussion might be required to finalize = the name of the function and whether additional parameters (such as = handling symbolic links differently) might be necessary. Open Questions Should there be any specific behaviors or exceptions when the number of = levels exceeds the current depth of the path? Is there a significant demand or use case from the community that = justifies the inclusion of this function in the core PHP library? I look forward to feedback from the community to refine this proposal = and gauge interest in moving forward with an RFC. Thanks! Daniel Baldwin Truecast https://www.truecastdesign.com 458-266-8064 =EF=BF=BC --Apple-Mail=_BF97247D-AF75-4097-807B-06E4B02815DD Content-Type: multipart/related; type="text/html"; boundary="Apple-Mail=_3E5E4E84-FAAD-4803-ACBE-794CA21A0C90" --Apple-Mail=_3E5E4E84-FAAD-4803-ACBE-794CA21A0C90 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hello,

I=E2=80=99m a full stack = developer and owner of Truecast that lives in Holley, Oregon, = USA. 

Introduction

Navigating = up multiple directory levels is a common requirement in PHP = applications, especially when managing paths in complex projects. = Currently, this is achieved by chaining calls to = the dirname() function. This method, while = functional, can become cumbersome and less readable with increasing = directory depth.

Proposed Feature

I propose the = introduction of a new function, upDir(), which = simplifies the process of moving up multiple directory levels in a file = path. This function extends the utility of the = existing dirname() by allowing a user to specify = the number of directory levels they wish to ascend in a single function = call.

Function Prototype:

function upDir(int $levels =3D 1, =
string $path =
=3D __DIR__): string

Function Example:

function upDir(int $levels =3D 1, =
string $path =
=3D null) {
    if  ($path =3D=3D=3D null) 
		=
   $path =3D __DIR__;   

    for ($i =3D 0; $i < =
$levels; $i++)
        $path =3D dirname($path);
   =20
    return $path;
}

require =
upDir(4).'/init.php';

Parameters= :

  • path: The input = path.
  • levels: The number of parent directories to = ascend.

Return:

  • Returns the path = of the parent directory after ascending the specified = levels.

Benefits

  • Improved = Readability: Reduces the complexity and improves the = readability of the code, making it easier to understand at a glance, = especially when dealing with multiple nested = directories.
  • Error Reduction: Decreases the = likelihood of errors that can occur from multiple = chained dirname() calls, like miscounting the = number of calls needed.
  • Efficiency: Potentially = increases efficiency by reducing the number of function calls in a = script.

Potential Issues and = Considerations

  • Backward Compatibility: The = function would be an addition to the existing PHP functions and is not = expected to affect backward = compatibility.
  • Performance: Initial benchmarks = would need to be conducted to compare its performance against = repeated dirname() calls to ensure there are no = significant overheads.
  • Naming and Parameters: = Further discussion might be required to finalize the name of the = function and whether additional parameters (such as handling symbolic = links differently) might be necessary.

Open = Questions

  • Should there be any specific behaviors or = exceptions when the number of levels exceeds the current depth of the = path?
  • Is there a significant demand or use case = from the community that justifies the inclusion of this function in the = core PHP library?

I look forward to feedback from = the community to refine this proposal and gauge interest in moving = forward with an RFC.



Thanks!

Daniel = Baldwin
Truecast
https://www.truecastdesign.com
458-266-8064


3D"BEAEBEF024334753818FA264A31205BC.png"



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