wp_stream_image

函数
wp_stream_image ( $image, $mime_type, $attachment_id )
参数
  • (WP_Image_Editor) $image The image editor instance.
    Required:
  • (string) $mime_type The mime type of the image.
    Required:
  • (int) $attachment_id The image's attachment post ID.
    Required:
返回值
  • (bool) True on success, false on failure.
定义位置
相关方法
wp_save_imagewp_crop_imagewp_restore_imagewp_load_imagestream_preview_image
引入
2.9.0
弃用
-

wp_stream_image: 它检索了一个流图像: 该函数为一个给定的URL检索图像流。

将WP_image_Editor中的图像流式传输到浏览器。

function wp_stream_image( $image, $mime_type, $attachment_id ) {
	if ( $image instanceof WP_Image_Editor ) {

		/**
		 * Filters the WP_Image_Editor instance for the image to be streamed to the browser.
		 *
		 * @since 3.5.0
		 *
		 * @param WP_Image_Editor $image         The image editor instance.
		 * @param int             $attachment_id The attachment post ID.
		 */
		$image = apply_filters( 'image_editor_save_pre', $image, $attachment_id );

		if ( is_wp_error( $image->stream( $mime_type ) ) ) {
			return false;
		}

		return true;
	} else {
		/* translators: 1: $image, 2: WP_Image_Editor */
		_deprecated_argument( __FUNCTION__, '3.5.0', sprintf( __( '%1$s needs to be a %2$s object.' ), '$image', 'WP_Image_Editor' ) );

		/**
		 * Filters the GD image resource to be streamed to the browser.
		 *
		 * @since 2.9.0
		 * @deprecated 3.5.0 Use {@see 'image_editor_save_pre'} instead.
		 *
		 * @param resource|GdImage $image         Image resource to be streamed.
		 * @param int              $attachment_id The attachment post ID.
		 */
		$image = apply_filters_deprecated( 'image_save_pre', array( $image, $attachment_id ), '3.5.0', 'image_editor_save_pre' );

		switch ( $mime_type ) {
			case 'image/jpeg':
				header( 'Content-Type: image/jpeg' );
				return imagejpeg( $image, null, 90 );
			case 'image/png':
				header( 'Content-Type: image/png' );
				return imagepng( $image );
			case 'image/gif':
				header( 'Content-Type: image/gif' );
				return imagegif( $image );
			case 'image/webp':
				if ( function_exists( 'imagewebp' ) ) {
					header( 'Content-Type: image/webp' );
					return imagewebp( $image, null, 90 );
				}
				return false;
			default:
				return false;
		}
	}
}

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