How do I check if a directory exists is dir file exists or both

Question

I want to create a directory if it does not exist already  Is using the is dir function enough for that purpose  if    is dir   dir           mkdir   dir              Or should I combine is dir with file exists  if    file exists   dir    amp  amp   is dir   dir           mkdir   dir

User · Answer

This is how I do  if is dir    folder test        echo  Exist    else    echo  Not exist

User · Answer

This is an old  but still topical question  Just test with the is dir   or file exists   function for the presence of the   or    file in the directory under test  Each directory must contain these files   is dir  path to directory

User · Answer

Second variant in question post is not ok  because  if you already have file with the same name  but it is not a directory   file exists  dir  will return false  folder will not be created  so error  failed to open stream  No such file or directory  will be occured  In Windows there is a difference between  file  and  folder  types  so need to use file exists   and is dir   at the same time  for ex    if  file exists  file          if   is dir  file        if file is already present  but it s not a dir           do something with file - delete  rename  etc          unlink  file      for example         mkdir  file   NEEDED ACCESS LEVEL           else     no file exists with this name     mkdir  file   NEEDED ACCESS LEVEL

User · Answer

dirname     POST  search     filename     folder      dirname         if   file exists  filename         mkdir  folder      dirname  0777       echo  The directory  dirname was successfully created        exit    else       echo  The directory  dirname exists

User · Answer

I had the same doubt  but see the PHP docu  https   www php net manual en function file-exists php https   www php net manual en function is-dir php You will see that is dir   has both properties   Return Values is dir Returns TRUE if the filename exists and is a directory  FALSE otherwise

User · Answer

Well instead of checking both  you could do if stream resolve include path  folder    false   It is slower but kills two birds in one shot   Another option is to simply ignore the E WARNING  not by using  mkdir        because that would simply waive all possible warnings  not just the directory already exists one   but by registering a specific error handler before doing it   namespace com stackoverflow   set error handler function  errno   errm         if  strpos  errm  exists       false  throw new  Exception  errm     or better  create your own FolderCreationException class     mkdir  folder      possibly more mkdir instructions  which is when this becomes useful    restore error handler

User · Answer

A way to check if a path is directory can be following   function isDirectory  path         all    scandir  path       return  all     false         NOTE  It will return false for non-existant path too  but works perfectly for UNIX Windows

User · Answer

I think realpath   may be the best way to validate if a path exist http   www php net realpath  Here is an example function    lt  php        Checks if a folder exist and return canonicalized absolute pathname  long version      param string  folder the path being checked      return mixed returns the canonicalized absolute pathname on success otherwise FALSE is returned     function folder exist  folder           Get canonicalized absolute pathname      path   realpath  folder           If it exist  check if it s a directory     if  path     false AND is dir  path                    Return canonicalized absolute pathname         return  path                Path folder does not exist     return false      Short version of the same function   lt  php        Checks if a folder exist and return canonicalized absolute pathname  sort version      param string  folder the path being checked      return mixed returns the canonicalized absolute pathname on success otherwise FALSE is returned     function folder exist  folder           Get canonicalized absolute pathname      path   realpath  folder           If it exist  check if it s a directory     return   path     false AND is dir  path      path   false      Output examples   lt  php     CASE 1      input     some path which does not exist   var dump  input                    string 31    some path which does not exist   output   folder exist  input   var dump  output                   bool false       CASE 2      input     home   var dump  input    output   folder exist  input              string 5    home  var dump  output                   string 5    home       CASE 3      input     home      var dump  input                    string 8    home      output   folder exist  input   var dump  output                   string 1        Usage   lt  php   folder     foo bar    if FALSE       path   folder exist  folder          die  Folder      path     already exist       mkdir  folder      Continue do stuff

User · Answer

year   date  Y        month   date  m        filename          year      filename2          year      month   if file exists  filename        if file exists  filename2   false           mkdir  filename2 0777          else      mkdir  filename 0777

User · Answer

save folder    some path     date  dmy     if   file exists  save folder        mkdir  save folder  0777

User · Answer

Both would return true on Unix systems - in Unix everything is a file  including directories  But to test if that name is taken  you should check both  There might be a regular file named  foo   which would prevent you from creating a directory name  foo

[php] How do I check if a directory exists? "is_dir", "file_exists" or both?

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