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Iván Rodríguez
Asked: 2020-10-07 10:00:42 +0800 CST 2020-10-07 10:00:42 +0800 CST

Problem checking if a directory exists with PHP

  • 772

I'm trying to check if a directory exists, and if not, create it, but the page doesn't work for me when I use the file_existsor functions is_dir.

I have tried like this:

if(!file_exists( $path )
    mkdir($path);

And so:

if(!is_dir ( $path )
    mkdir( $path );

And I have also tried to put the pathwith different formats:

According to the documentation, if I'm on Windows I should do it like this:

$path= "C://Apache24/htdocs/uploads/carpeta"

Although I have also tried to do it like this:

$path ="C:/Apache24/htdocs/uploads/carpeta"

And so

$path= "./uploads/carpeta"

Even so:

$path= $_SERVER['DOCUMENT_ROOT']."/uploads/carpeta"

In all cases it fails. Locally I am working on Windows but I guess when I upload it to the server it will have to run on Linux .

Why do these functions fail? How is it solved?

php

1 Answers

  1. Best Answer

    The code !file_existsis correct. You should only be aware that a parenthesis is missing.

    I added the curly braces to make it clearer, although they are not necessary.

    if(!file_exists( 'images/pics/' )) {
    echo "no existe";
}

    I also think you have a difference with $path. It's important to understand how that works, $pathit refers to where you run the function from file_exists.

    For example if you are in...

    C:\xampp\htdocs\borrar\

    ...and you want to check if the directory exists

    C:\xampp\htdocs\borrar\images\pics

    ... $pathshould be images/pics(note changed slashes and path relative to where the function is executed).

    If instead you execute the function from...

    C:\xampp\htdocs\borrar\tmp

    ... then $pathit should be ../images/pics, ie download a directory (../) and then the path to validate ( images/pics).

    • 3