CODEWITHSUNDEEP
php
TijuanaKez
TijuanaKez

Reputation: 1472

How do I test if an remote image file exists in php?

This spits out a whole heap of NO's but the images are there and path correct as they are displayed by <img>.

foreach ($imageNames as $imageName) 
{
    $image = 'http://path/' . $imageName . '.jpg';
    if (file_exists($image)) {
        echo  'YES';
    } else {
        echo 'NO';
    }
    echo '<img src="' . $image . '">';
}

Upvotes: 7

Views: 24102

Answers (5)

DigiChristie
DigiChristie

Reputation: 55

This is what I did. It covers more possible outcomes with getting the headers because if you can't access the file it's not always just "404 Not Found". Sometimes it's "Moved Permanently", "Forbidden", and other possible messages. However it's just " 200 OK" if the file exists, and can be accessed. The part with HTTP can have 1.1, or 1.0 after it, which is why I just used strpos to be more reliable for every situation.

$file_headers = @get_headers( 'http://example.com/image.jpg' );

$is_the_file_accessable = true;

if( strpos( $file_headers[0], ' 200 OK' ) !== false ){
    $is_the_file_accessable = false;
}

if( $is_the_file_accessable ){
    // THE IMAGE CAN BE ACCESSED.
}
else
{
    // THE IMAGE CANNOT BE ACCESSED.
}

Upvotes: 1

Ionică Bizău
Ionică Bizău

Reputation: 113355

file_exists uses local path, not a URL.

A solution would be this:

$url=getimagesize(your_url);

if(!is_array($url))
{
     // The image doesn't exist
}
else
{
     // The image exists
}

See this for more information.

Also, looking for the response headers (using the get_headers function) would be a better alternative. Just check if the response is 404:

if(@get_headers($your_url)[0] == 'HTTP/1.1 404 Not Found')
{
     // The image doesn't exist
}
else
{
     // The image exists
}

Upvotes: 16

Fujael
Fujael

Reputation: 107

function remote_file_exists($file){

$url=getimagesize($file);

if(is_array($url))
{

 return true;

}
else {

 return false;

}

$file='http://www.site.com/pic.jpg';

echo remote_file_exists($file);  // return true if found and if not found it will return false

Upvotes: 0

realization
realization

Reputation: 597

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_exec($ch);
$retcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if($retcode==200) echo 'YES';
else              echo 'NO';

Upvotes: 2

Chris Christensen
Chris Christensen

Reputation: 418

file_exists looks for a local path, not an "http://" URL

use:

$file = 'http://www.domain.com/somefile.jpg';
$file_headers = @get_headers($file);
if($file_headers[0] == 'HTTP/1.1 404 Not Found') {
    $exists = false;
}
else {
    $exists = true;
}

Upvotes: 15

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