_crop_image_resource() │ WP 2.9.0

Crops an image resource. Internal use only.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

resource|GdImage. (maybe) cropped image resource or GdImage instance.

Usage

_crop_image_resource( $img, $x, $y, $w, $h );
$img(resource|GdImage) (required)
Image resource or GdImage instance.
$x(float) (required)
Source point x-coordinate.
$y(float) (required)
Source point y-coordinate.
$w(float) (required)
Source width.
$h(float) (required)
Source height.

Changelog

Since 2.9.0 Introduced.

_crop_image_resource() code WP 7.0

wp-admin/includes/image-edit.php 
function _crop_image_resource( $img, $x, $y, $w, $h ) {
	$dst = wp_imagecreatetruecolor( $w, $h );

	if ( is_gd_image( $dst ) ) {
		if ( imagecopy( $dst, $img, 0, 0, $x, $y, $w, $h ) ) {
			if ( PHP_VERSION_ID < 80000 ) { // imagedestroy() has no effect as of PHP 8.0.
				imagedestroy( $img );
			}

			$img = $dst;
		}
	}

	return $img;
}