check if url exists in php

Question

if (!(file_exists(http://example.com/images/thumbnail_1286954822.jpg))) {   
$filefound = '0';                         
}

why won't this work?

http://stackoverflow.com/questions/981954/how-can-one-check-to-see-if-a-remote-file-exists-using-php — ArK, Nov 23 '10 at 06:58

score 90 · Accepted Answer · edited Apr 04 '20 at 22:19

90

if (!file_exists('http://example.com/images/thumbnail_1286954822.jpg')) {   
$filefound = '0';
}

edited Apr 04 '20 at 22:19

Boba Fit

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answered Nov 23 '10 at 06:57

Haim Evgi

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1

if (!file_exists($base_url.'images/thumbnail_1286954822.jpg')) { $filefound = '0'; } it's like this actually sorry. – anonymous Nov 23 '10 at 06:59
3

@anonymous actually it's not like this sorry, you didn't ask for $base_url + images/thumbnail_1286954822.jpg you asked for http:// mysite com/images/thumbnail_1286954822.jpg – Robert Pounder Apr 22 '15 at 08:16

score 36 · Answer 2 · answered Nov 23 '10 at 06:57

36

The function expects a string.
file_exists() does not work properly with HTTP URLs.

answered Nov 23 '10 at 06:57

Ignacio Vazquez-Abrams

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Do you have any solution for that? – Joyner Feb 12 '19 at 13:01

IRSHAD · Answer 3 · 2018-01-16T17:29:47.647

file_exists checks whether a file exist in the specified path or not.

Syntax:

file_exists ( string $filename )

Returns TRUE if the file or directory specified by filename exists; FALSE otherwise.

$filename = BASE_DIR."images/a/test.jpg";
if (file_exists($filename)){
    echo "File exist.";
}else{
    echo "File does not exist.";
}

Another alternative method you can use getimagesize(), it will return 0(zero) if file/directory is not available in the specified path.

if (@getimagesize($filename)) {...}

score 8 · Answer 4 · answered Oct 17 '19 at 07:56

8

You can also use PHP get_headers() function.

Example:

function check_file_exists_here($url){
   $result=get_headers($url);
   return stripos($result[0],"200 OK")?true:false; //check if $result[0] has 200 OK
}

if(check_file_exists_here("http://www.mywebsite.com/file.pdf"))
   echo "This file exists";
else
   echo "This file does not exist";

answered Oct 17 '19 at 07:56

Pradeep Kumar

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For me, file_exists() didn't work. I am trying to locate a PDF file. But your solution worked. Thanks. Do you know why file_exists() didn't work for me? – Nguai al Aug 12 '20 at 16:24
1

It depends on the code. https://stackoverflow.com/q/1287837/4366303 - this might answer you – Pradeep Kumar Aug 13 '20 at 05:06
A one liner `if(stripos(get_headers($file)[0],'200 OK'))` – iKev61 Oct 28 '22 at 11:06

score 6 · Answer 5 · answered Nov 23 '10 at 07:44

6

Based on your comment to Haim, is this a file on your own server? If so, you need to use the file system path, not url (e.g. file_exists( '/path/to/images/thumbnail.jpg' )).

answered Nov 23 '10 at 07:44

JJJ

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score 3 · Answer 6 · answered Jul 31 '19 at 05:06

3

for me also the file_exists() function is not working properly. So I got this alternative solution. Hope this one help someone

$path = 'http://localhost/admin/public/upload/video_thumbnail/thumbnail_1564385519_0.png';

    if (@GetImageSize($path)) {
        echo 'File exits';
    } else {
        echo "File doesn't exits";
    }

answered Jul 31 '19 at 05:06

Nashir

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@Nguaial The getimagesize() function will determine the size of any supported given image file and return the dimensions along with the file type and a height/width text string to be used inside a normal HTML IMG tag and the correspondent HTTP content type. – Nashir Aug 20 '20 at 10:53

score 2 · Answer 7 · answered Jan 05 '22 at 11:45

Check code below

if ($user->image) {
        $filename = "images/" . $user->image;
        if (file_exists($filename)) {
            echo '<br />';
            echo "File exist.";
        } else {
            echo '<br />';
            echo "File does not exist.";
        }
    }

check if url exists in php

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