Checking if an Array of Images exist, then displaying it.

[Perry]

Hey.

I have a possible 4 different images with the same file name but different extention (.png, .jpeg, .jpg, .gif) - Only 1 can exist at a time. How would I go about checking if each image exists then displaying the one image that exists? If none exist then it displays some text.

If I am not clear with what I need help with, please say!

Many thanks!

[paulnaj]

Hi,

You could have an array that loops through the extensions ...

// given $path_to_image (excluding the extension)
$exts = array('png', 'jpeg', 'jpg', 'gif');
$file = '';
foreach($exts as $ext){
  if(file_exists($path_to_image.'.'.$ext)){
    $file = $path_to_image.'.'.$ext;
    break;
  }
}
if($file){
// image
} else {
// text
}

Look up the function file_exists() in the manual to get the technicalities of paths.

P.

[Perry]

Thanks for the reply!

I have edited the code

		// given $path_to_image (excluding the extension)
$exts = array('png', 'jpeg', 'jpg', 'gif');
$file = '';
$path_to_image = 'http://site.com/community/avatars/'.strtolower($current_user->
    user_login);
foreach($exts as $ext){
  if(file_exists($path_to_image.'.'.$ext)){
    $file = $path_to_image.'.'.$ext;
    break;
  }
}
if($file){
 echo '<img src="'.$file.'" width="20px" height="20px" />';
} else {
echo 'Hello';
} 

And even thought there is a file called perry.jpg in the specified folder it takes a while to process the script then just displays 'Hello'

Why is this happening?

Regards.

[paulnaj]

Did you look up the file_exists() function? There will be rules about how you specify the path - I never remember - I just look them up. The user comments at the bottom of each page in the manual usually have just what you're after.

P

[Weedpacket]

http://site.com/community/avatars/

It's probably taking a while because it's going to the trouble of attempting to download the image from site.com. If it's supposed to be looking on your server, just use a file path instead of an HTTP URL.

[Perry]

Thank you for your help. I have solved my problem! For future reference to users:

		// given $path_to_image (excluding the extension)
$exts = array('png', 'jpeg', 'jpg', 'gif');
$file = '';
$path_to_image = '/home/path/to/folder/community/avatars/'.strtolower($current_user->user_login);

foreach($exts as $ext){
  if(file_exists($path_to_image.'.'.$ext)){
    $file = $path_to_image.'.'.$ext;
    break;
  }
}
if($file){
	$type = substr(strrchr($file, "."), 1);
 echo '<img src="http://site.com/community/avatars/'.strtolower($current_user->user_login).'.'.$type.'" width="20px" height="20px" />';
} else {
echo '<img src="http://site.com/community/avatars/default.png" width="20px" height="20px" />';
}