(PHP 4, PHP 5, PHP 7, PHP 8)
imagesx — Get image width
imageA GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
   Return the width of the image.
  
| Version | Description | 
|---|---|
| 8.0.0 | imageexpects a GdImage
  instance now; previously, a validgdresource was expected. | 
Example #1 Using imagesx()
<?php
// create a 300*200 image
$img = imagecreatetruecolor(300, 200);
echo imagesx($img); // 300
?>