PHP absolute path to root

Question

I can t believe PHP doesn t have an easy solution for this simple matter  ASP NET has a   sign that takes care of this issue and starts everything from the root level  Here s my problem  localhost MySite    -- gt Admin       -- Edit php    -- gt Class       -- class EditInfo php    -- gt Texts       -- MyInfo txt    --ShowInfo php  Inside class EditInfo php I am accessing MyInfo txt so I defined a relative path  quot    Texts MyInfo txt quot   Then I created an object of EditInfo in Admin Edit php and accessed Texts MyInfo txt - it worked fine  But now I have to create an object of EditInfo in ShowInfo php and access Texts MyInfo txt and here s the problem that occurs  As I am using a relative path in my class  whenever I am creating an objEditInfo and trying to access MyInfo txt I am getting  quot File doesn t exist quot  error  Now I am looking for something that s equivalent to  quot   Texts MyInfo txt quot  from ASP NET  Is there anything similar to that out there    Or do I have to set the path with some if else condition   UPDATE  I used   SERVER  DOCUMENT ROOT    I was using a subfolder where my actual website was  So I had to use   SERVER  DOCUMENT ROOT    quot  mySite quot   amp  then adding rest of the address   quot  Texts MyInfo php quot   to it

User · Answer

The best way to do this given your setup is to define a constant describing the root path of your site. You can create a file config.php at the root of your application:

<?php

define('SITE_ROOT', dirname(__FILE__));

$file_path = SITE_ROOT . '/Texts/MyInfo.txt';

?>

Then include config.php in each entry point script and reference SITE_ROOT in your code rather than giving a relative path.

User · Answer

Create a constant with absolute path to the root by using define in ShowInfo php   define  ROOTPATH     DIR       Or PHP  lt   5 3  define  ROOTPATH   dirname   FILE        Now use it   if  file exists ROOTPATH   Texts MyInfo txt                   Or use the DOCUMENT ROOT defined in   SERVER   if  file exists   SERVER  DOCUMENT ROOT     Texts MyInfo txt

User · Answer

It always best to start any custom PHP project with a bootstrap file where you define the most commonly used paths as constants  based on values extracted from   SERVER  It should make migrating your projects or parts of your project to another server or to another directory on the server a hell of a lot easier   This is how I define my root paths    define  LOCAL PATH ROOT     SERVER  DOCUMENT ROOT     define  HTTP PATH ROOT   isset   SERVER  HTTP HOST        SERVER  HTTP HOST      isset   SERVER  SERVER NAME        SERVER  SERVER NAME       UNKNOWN        The path LOCAL PATH ROOT is the document root  The path HTTP PATH ROOT is the equivalent when accessing the same path via HTTP   At that point  converting any local path to an HTTP path can be done with the following code    str replace LOCAL PATH ROOT  RELATIVE PATH ROOT   my path    If you want to ensure compatibility with Windows based servers  you ll need to replace the directory seperator with a URL seperator as well    str replace LOCAL PATH ROOT  RELATIVE PATH ROOT  str replace DIRECTORY SEPARATOR        my path     Here s the full bootstrap code that I m using for the PHP PowerTools boilerplate    defined  LOCAL PATH BOOTSTRAP      define  LOCAL PATH BOOTSTRAP     DIR         -----------------------------------------------------------------------    DEFINE SEPERATOR ALIASES    ----------------------------------------------------------------------- define  URL SEPARATOR         define  DS   DIRECTORY SEPARATOR   define  PS   PATH SEPARATOR   define  US   URL SEPARATOR       -----------------------------------------------------------------------    DEFINE ROOT PATHS    ----------------------------------------------------------------------- define  RELATIVE PATH ROOT        define  LOCAL PATH ROOT     SERVER  DOCUMENT ROOT     define  HTTP PATH ROOT           isset   SERVER  HTTP HOST                SERVER  HTTP HOST               isset   SERVER  SERVER NAME                SERVER  SERVER NAME       UNKNOWN          -----------------------------------------------------------------------    DEFINE RELATIVE PATHS    ----------------------------------------------------------------------- define  RELATIVE PATH BASE           str replace LOCAL PATH ROOT  RELATIVE PATH ROOT  getcwd      define  RELATIVE PATH APP   dirname RELATIVE PATH BASE    define  RELATIVE PATH LIBRARY   RELATIVE PATH APP   DS    vendor    define  RELATIVE PATH HELPERS   RELATIVE PATH BASE   define  RELATIVE PATH TEMPLATE   RELATIVE PATH BASE   DS    templates    define  RELATIVE PATH CONFIG   RELATIVE PATH BASE   DS    config    define  RELATIVE PATH PAGES   RELATIVE PATH BASE   DS    pages    define  RELATIVE PATH ASSET   RELATIVE PATH BASE   DS    assets    define  RELATIVE PATH ASSET IMG   RELATIVE PATH ASSET   DS    img    define  RELATIVE PATH ASSET CSS   RELATIVE PATH ASSET   DS    css    define  RELATIVE PATH ASSET JS   RELATIVE PATH ASSET   DS    js        -----------------------------------------------------------------------    DEFINE LOCAL PATHS    ----------------------------------------------------------------------- define  LOCAL PATH BASE   LOCAL PATH ROOT   RELATIVE PATH BASE   define  LOCAL PATH APP   LOCAL PATH ROOT   RELATIVE PATH APP   define  LOCAL PATH LIBRARY   LOCAL PATH ROOT   RELATIVE PATH LIBRARY   define  LOCAL PATH HELPERS   LOCAL PATH ROOT   RELATIVE PATH HELPERS   define  LOCAL PATH TEMPLATE   LOCAL PATH ROOT   RELATIVE PATH TEMPLATE   define  LOCAL PATH CONFIG   LOCAL PATH ROOT   RELATIVE PATH CONFIG   define  LOCAL PATH PAGES   LOCAL PATH ROOT   RELATIVE PATH PAGES   define  LOCAL PATH ASSET   LOCAL PATH ROOT   RELATIVE PATH ASSET   define  LOCAL PATH ASSET IMG   LOCAL PATH ROOT   RELATIVE PATH ASSET IMG   define  LOCAL PATH ASSET CSS   LOCAL PATH ROOT   RELATIVE PATH ASSET CSS   define  LOCAL PATH ASSET JS   LOCAL PATH ROOT   RELATIVE PATH ASSET JS       -----------------------------------------------------------------------    DEFINE URL PATHS    ----------------------------------------------------------------------- if  US     DS       needed for compatibility with windows     define  HTTP PATH BASE   HTTP PATH ROOT   RELATIVE PATH BASE       define  HTTP PATH APP   HTTP PATH ROOT   RELATIVE PATH APP       define  HTTP PATH LIBRARY   false       define  HTTP PATH HELPERS   false       define  HTTP PATH TEMPLATE   false       define  HTTP PATH CONFIG   false       define  HTTP PATH PAGES   false       define  HTTP PATH ASSET   HTTP PATH ROOT   RELATIVE PATH ASSET       define  HTTP PATH ASSET IMG   HTTP PATH ROOT   RELATIVE PATH ASSET IMG       define  HTTP PATH ASSET CSS   HTTP PATH ROOT   RELATIVE PATH ASSET CSS       define  HTTP PATH ASSET JS   HTTP PATH ROOT   RELATIVE PATH ASSET JS     else       define  HTTP PATH BASE   HTTP PATH ROOT               str replace DS  US  RELATIVE PATH BASE        define  HTTP PATH APP   HTTP PATH ROOT               str replace DS  US  RELATIVE PATH APP        define  HTTP PATH LIBRARY   false       define  HTTP PATH HELPERS   false       define  HTTP PATH TEMPLATE   false       define  HTTP PATH CONFIG   false       define  HTTP PATH PAGES   false       define  HTTP PATH ASSET   HTTP PATH ROOT               str replace DS  US  RELATIVE PATH ASSET        define  HTTP PATH ASSET IMG   HTTP PATH ROOT               str replace DS  US  RELATIVE PATH ASSET IMG        define  HTTP PATH ASSET CSS   HTTP PATH ROOT               str replace DS  US  RELATIVE PATH ASSET CSS        define  HTTP PATH ASSET JS   HTTP PATH ROOT               str replace DS  US  RELATIVE PATH ASSET JS          -----------------------------------------------------------------------    DEFINE REQUEST PARAMETERS    ----------------------------------------------------------------------- define  REQUEST QUERY           isset   SERVER  QUERY STRING     amp  amp    SERVER  QUERY STRING                     SERVER  QUERY STRING     false   define  REQUEST METHOD           isset   SERVER  REQUEST METHOD              strtoupper   SERVER  REQUEST METHOD      false   define  REQUEST STATUS           isset   SERVER  REDIRECT STATUS                SERVER  REDIRECT STATUS     false   define  REQUEST PROTOCOL           isset   SERVER  HTTP ORIGIN              substr   SERVER  HTTP ORIGIN    0          strpos   SERVER  HTTP ORIGIN             3     http       define  REQUEST PATH           isset   SERVER  REQUEST URI              str replace RELATIVE PATH BASE                SERVER  REQUEST URI        UNKNOWN     define  REQUEST PATH STRIP QUERY           REQUEST QUERY           str replace       REQUEST QUERY      REQUEST PATH    REQUEST PATH       -----------------------------------------------------------------------    DEFINE SITE PARAMETERS    ----------------------------------------------------------------------- define  PRODUCTION   false   define  PAGE PATH DEFAULT   US    index    define  PAGE PATH            REQUEST PATH STRIP QUERY     US            PAGE PATH DEFAULT   REQUEST PATH STRIP QUERY     If you add the above code to your own project  outputting all user constants at this point  which you can do with get defined constants true  should give a result that looks somewhat like this    array      LOCAL PATH BOOTSTRAP    gt    var www libraries backend Data examples      URL SEPARATOR    gt          DS    gt          PS    gt          US    gt          RELATIVE PATH ROOT    gt         LOCAL PATH ROOT    gt    var www      HTTP PATH ROOT    gt   localhost 8888      RELATIVE PATH BASE    gt    libraries backend Data examples      RELATIVE PATH APP    gt    libraries backend Data      RELATIVE PATH LIBRARY    gt    libraries backend Data vendor      RELATIVE PATH HELPERS    gt    libraries backend Data examples      RELATIVE PATH TEMPLATE    gt    libraries backend Data examples templates      RELATIVE PATH CONFIG    gt    libraries backend Data examples config      RELATIVE PATH PAGES    gt    libraries backend Data examples pages      RELATIVE PATH ASSET    gt    libraries backend Data examples assets      RELATIVE PATH ASSET IMG    gt    libraries backend Data examples assets img      RELATIVE PATH ASSET CSS    gt    libraries backend Data examples assets css      RELATIVE PATH ASSET JS    gt    libraries backend Data examples assets js      LOCAL PATH BASE    gt    var www libraries backend Data examples      LOCAL PATH APP    gt    var www libraries backend Data      LOCAL PATH LIBRARY    gt    var www libraries backend Data vendor      LOCAL PATH HELPERS    gt    var www libraries backend Data examples      LOCAL PATH TEMPLATE    gt    var www libraries backend Data examples templates      LOCAL PATH CONFIG    gt    var www libraries backend Data examples config      LOCAL PATH PAGES    gt    var www libraries backend Data examples pages      LOCAL PATH ASSET    gt    var www libraries backend Data examples assets      LOCAL PATH ASSET IMG    gt    var www libraries backend Data examples assets img      LOCAL PATH ASSET CSS    gt    var www libraries backend Data examples assets css      LOCAL PATH ASSET JS    gt    var www libraries backend Data examples assets js      HTTP PATH BASE    gt   localhost 8888 libraries backend Data examples      HTTP PATH APP    gt   localhost 8888 libraries backend Data      HTTP PATH LIBRARY    gt  false     HTTP PATH HELPERS    gt  false     HTTP PATH TEMPLATE    gt  false     HTTP PATH CONFIG    gt  false     HTTP PATH PAGES    gt  false     HTTP PATH ASSET    gt   localhost 8888 libraries backend Data examples assets      HTTP PATH ASSET IMG    gt   localhost 8888 libraries backend Data examples assets img      HTTP PATH ASSET CSS    gt   localhost 8888 libraries backend Data examples assets css      HTTP PATH ASSET JS    gt   localhost 8888 libraries backend Data examples assets js      REQUEST QUERY    gt  false     REQUEST METHOD    gt   GET      REQUEST STATUS    gt  false     REQUEST PROTOCOL    gt   http         REQUEST PATH    gt          REQUEST PATH STRIP QUERY    gt          PRODUCTION    gt  false     PAGE PATH DEFAULT    gt    index      PAGE PATH    gt    index

User · Answer

You can access the   SERVER  DOCUMENT ROOT   variable     lt  php      path     SERVER  DOCUMENT ROOT        path      subdir1 yourdocument txt     gt

User · Answer

use dirname   FILE    in a global configuration file

User · Answer

In PHP there is a global variable containing various details related to the server  It s called   SERVER  It contains also the root      SERVER  DOCUMENT ROOT     The only problem is that the entries in this variable are provided by the web server and there is no guarantee that all web servers offer them

User · Answer

The best way Using dirname    Because SERVER  DOCUMENT ROOT   not working all servers  and also return server running path     root   dirname    FILE        root     DIR      filePath   realpath dirname   FILE        rootPath   realpath   SERVER  DOCUMENT ROOT       htmlPath   str replace  root       filePath

User · Answer

This is my way to find the rootstart  Create at ROOT start a file with name mainpath php  lt  php     DEFINE ROOTPATH  check data exist    quot  quot      i surf   0      looking for mainpath php at the aktiv folder or higher folder  while   file exists  check data exist  quot mainpath php quot         check data exist     quot     quot       i surf         max 7 folder deep   if   i surf    7        return false         define  quot MAINPATH quot     check data exist    check data exist    quot  quot        gt   For me is that the best and easiest way to find them

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