note 124447 rejected from function.finfo-open by cmb
| From: | cmb@php.net | Date: | Wed, 27 Nov 2019 16:59:39 +0000 |
| Subject: | note 124447 rejected from function.finfo-open by cmb | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-213273@lists.php.net to get a copy of this message | ||
Note Submitter: pelister at techlister dot com
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I have the following content saved as a gif file,
GIF89a<
<?php
echo "hello";
and I checked for valid image types using the following PHP functions
<?php
$finfo = finfo_open(FILEINFO_MIME_TYPE);
foreach (glob("*") as $filename) {
echo $filename . ": " . finfo_file( $finfo, $filename ) . "<br>";
echo $filename . ": " . mime_content_type( $filename ) . "<br>";
echo "exif: " . exif_imagetype( $filename ) . "<br>";
print_r( getimagesize( $filename ) );
echo "<br>";
}
finfo_close($finfo);
?>
I got the following output
motion.gif: image/gif
motion.gif: image/gif
exif: 1
Array ( [0] => 2620 [1] => 16188 [2] => 1 [3] => width="2620"
height="16188" [channels] => 3 [mime] => image/gif )
none of the functions determine if the uploaded image is valid.