CODEWITHSUNDEEP
php
user
user

Reputation: 87

How to get the extension of a file which is stored in the system using php

I am trying to check whether a file name (user_id) with a particular extension exists in a location. Whenever I execute this only if part gets executed and the control does not goes to the else if part, even though the image is not of the png extension.

$img1 = "../img/profile_imgs/".$user_id.".jpg";
$img2 = "../img/profile_imgs/".$user_id.".png";
$img3 = "../img/profile_imgs/".$user_id.".jpeg";

if (is_bool(file_exists($img1))==1)
{       
    
   echo "am here in jpg";           
   $prof_img =$img_name_jpg;
}
else if (is_bool(file_exists($img2))==1)
{
   echo "am here in png";
   $prof_img =$img_name_png;
}
else if (is_bool(file_exists($img3))==1){
    echo "am here in jpeg";
    $prof_img =$img_name_jpeg;
}

Upvotes: 1

Views: 62

Answers (3)

Arman
Arman

Reputation: 954

I think it will be better to keep file name in your database , and not try to guess the extension of the file. Anyways you can try the @Typoheads reply or function glob() if necessary http://php.net/manual/en/function.glob.php

Upvotes: 0

Ja͢ck
Ja͢ck

Reputation: 173542

In your code:

is_bool(file_exists($img1)) == 1

Tests whether the outcome of file_exists() is a boolean, which it always is.

That said, you can write a small helper function that does the testing for you using an array of extensions you want to look for:

function filePathMatchingExtensions($path, array $extensions)
{
    foreach ($extensions as $extension) {
        if (file_exists($path . $extension)) {
            return $path . $extension;
        }
    }
    return false;
}

$extensions = ['.jpg', '.jpeg', '.png'];
$prof_img = filePathMatchingExtensions("../img/profile_imgs/$user_id", $extensions);

if ($prof_img !== false) {
    // it exists
} else {
    // it doesn't exist
}

Upvotes: 0

t.h3ads
t.h3ads

Reputation: 1878

Why do you use this complicated condition:

if (is_bool(file_exists($img1))==1)

This should work just fine:

$img1 = "../img/profile_imgs/".$user_id.".jpg";
$img2 = "../img/profile_imgs/".$user_id.".png";
$img3 = "../img/profile_imgs/".$user_id.".jpeg";

if (file_exists($img1))
{       
    echo "am here in jpg";
    $prof_img = $img_name_jpg;
}
else if (file_exists($img2))
{
    echo "am here in png";
    $prof_img = $img_name_png;
}
else if (file_exists($img3))
{
    echo "am here in jpeg";
    $prof_img = $img_name_jpeg;
}

Upvotes: 1

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