is_gd_image()

最后更新于：2021-11-27 08:46:21

Determines whether the value is an acceptable type for GD image functions.

参数

$image

(resource|GdImage|false) (Required) A value to check the type for.

响应

(bool) True if $image is either a GD image resource or GdImage instance, false otherwise.

源文件

文件: gc-includes/media.php

function is_gd_image( $image ) {
	if ( is_resource( $image ) && 'gd' === get_resource_type( $image )
		|| is_object( $image ) && $image instanceof GdImage
	) {
		return true;
	}

	return false;
}