PHP Manual: Get image width

int imagesx(GdImage $image)

Returns the width of the given image object.

image: A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor.

Return the width of the image.

Version	Description
8.0.0	`image` expects a GdImage instance now; previously, a valid `gd` resource was expected.

Example #1 Using imagesx

<?php

// create a 300*200 image
$img = imagecreatetruecolor(300, 200);

echo imagesx($img); // 300

?>

imagesx