wp_create_thumbnail() WordPress Function

The wp_create_thumbnail() function is used to create a new image file from an existing image. This is useful for creating thumbnails of images to use on your website. The function takes two arguments: the path to the image to be used as the source, and the path to where the new image should be saved. The function will return the path to the new image if successful, or false if it fails.

wp_create_thumbnail( mixed $file, int $max_side, mixed $deprecated = '' ) #

function wp_create_thumbnail( $file, $max_side, $deprecated = '' ) {
	_deprecated_function( __FUNCTION__, '3.5.0', 'image_resize()' );
	return apply_filters( 'wp_create_thumbnail', image_resize( $file, $max_side, $max_side ) );
}