Asked  7 Months ago    Answers:  5   Viewed   56 times

I am trying to get image size (image dimensions, width and height) of hundreds of remote images and getimagesize is way too slow.

I have done some reading and found out the quickest way would be to use file_get_contents to read a certain amount of bytes from the images and examining the size within the binary data.

Anyone attempted this before? How would I examine different formats? Anyone has seen any library for this?


function ranger($url){
    $headers = array(
    "Range: bytes=0-32768"

    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $data = curl_exec($curl);
    return $data;

$start = microtime(true);

$url = "";

$raw = ranger($url);
$im = imagecreatefromstring($raw);

$width = imagesx($im);
$height = imagesy($im);

$stop = round(microtime(true) - $start, 5);

echo $width." x ".$height." ({$stop}s)";


640 x 480 (0.20859s)

Loading 32kb of data worked for me.

Wednesday, March 31, 2021
answered 7 Months ago

Native way to get the mimetype:

For PHP < 5.3 use mime_content_type()
For PHP >= 5.3 use finfo_open() or mime_content_type()

Alternatives to get the MimeType are exif_imagetype and getimagesize, but these rely on having the appropriate libs installed. In addition, they will likely just return image mimetypes, instead of the whole list given in magic.mime.

While mime_content_type is available from PHP 4.3 and is part of the FileInfo extension (which is enabled by default since PHP 5.3, except for Windows platforms, where it must be enabled manually, for details see here).

If you don't want to bother about what is available on your system, just wrap all four functions into a proxy method that delegates the function call to whatever is available, e.g.

function getMimeType($filename)
    $mimetype = false;
    if(function_exists('finfo_open')) {
        // open with FileInfo
    } elseif(function_exists('getimagesize')) {
        // open with GD
    } elseif(function_exists('exif_imagetype')) {
       // open with EXIF
    } elseif(function_exists('mime_content_type')) {
       $mimetype = mime_content_type($filename);
    return $mimetype;
Wednesday, March 31, 2021
answered 7 Months ago

getimagesize() returns an array with 7 elements. The index 2 of the array contains one of the IMAGETYPE_XXX constants indicating the type of the image.

The equivalent of the function provided using getimagesize() would be

function is_valid_type($file)
    $size = getimagesize($file);
    if(!$size) {
        return 0;


    if(in_array($size[2],  $valid_types)) {
        return 1;
    } else {
        return 0;
Saturday, May 29, 2021
answered 5 Months ago

I ran into the same issue and found the following solution in the documentation:

To run your functional tests, the WebTestCase class bootstraps the kernel of your application. In most cases, this happens automatically. However, if your kernel is in a non-standard directory, you'll need to modify your phpunit.xml.dist file to set the KERNEL_DIR environment variable to the directory of your kernel:

    <!-- ... -->
        <server name="KERNEL_DIR" value="/path/to/your/app/" />
    <!-- ... -->

So check your phpunit.xml.dist configuration file and try to add the absolute path to your app-directory.

Hope it helps.

Friday, July 30, 2021
Bálint Molnár
answered 3 Months ago

Silly mistake on my part... simply forgot to add phpunit as a dependency in the project. For anyone else that gets this error, to composer.json add:

"require-dev": {
    "phpunit/phpunit": "3.7.*"

And then run:

composer update

That solved the problem.

Friday, September 17, 2021
Samir Sabri
answered 1 Month ago
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