getimagesizefromstring()

getimagesizefromstring() — Get the size of an image from a string.

Built-in function of PHP 8.5. The manual lists it as available in PHP 5 >= 5.4.0, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

Identical to getimagesize() except that getimagesizefromstring() accepts a string instead of a file name as the first parameter.

Signature

getimagesizefromstring(string $string, array &$image_info = null): array|false

Parameters

Parameter	Type	What it takes
$string	string	The image data, as a string.
&$image_info	array	See getimagesize().

Return value

See getimagesize().

Example

A runnable snippet:

$img = '/path/to/test.png'; // Open as a file $size_info1 = getimagesize($img); // Or open as a string $data = file_get_contents($img); $size_info2 = getimagesizefromstring($data);