Detect image type from file path and file name

Question

I'm trying to echo an image from a folder called avatar_50x50, with the name of the file being the username. Although the extension will always be an image, how will I determine what file type it is?

<img src="../images/users/avatar_50x50/<?php echo $sel_user['username']; ?>"

store the name of the image in the db, it's better than searching the image — Bgi, Sep 13 '12 at 15:54
possible duplicate of [how to check a file path is an image or not in php?](http://stackoverflow.com/questions/2117396/how-to-check-a-file-path-is-an-image-or-not-in-php) — Ignacio Vazquez-Abrams, Sep 13 '12 at 15:55
I have no table in my database for files. What's the alternative? — Justin, Sep 13 '12 at 15:56
Duplicates: [1](http://stackoverflow.com/questions/10130804/checking-image-file-type) and [2](http://stackoverflow.com/questions/9547113/check-image-type-if-renamed-from-png-to-jpg) and there are certainly more... — Jocelyn, Sep 13 '12 at 16:06

score 1 · Accepted Answer · answered Sep 13 '12 at 15:57

you can use glob() and take first element from array if you are sure there is only one image with name as username:

<?php
    $file = glob('../images/users/avatar_50x50/'.$sel_user['username'].'.*');
    echo '<img src="../images/users/avatar_50x50/'.$file[0].'" alt="" />';
?>

score 0 · Answer 2 · answered Sep 13 '12 at 15:58

0

Use http://php.net/exif_imagetype

And than use "switch" operator to find right image ext.

$type = exif_imagetype($image);
switch($type) {
  case IMAGETYPE_GIF:
    $ext = '.gif';
  // etc...
}

answered Sep 13 '12 at 15:58

MrSil

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Detect image type from file path and file name

2 Answers2