
WordPress钩子详解:如何使用动作、过滤器和自定义钩子
wp_getimagesize ( $filename, $image_info = null )
wp_getimagesize: 这个函数用来获取图片的大小。它接受图像文件的路径作为参数,并返回一个包含图像的宽度、高度和类型的数组。
允许PHP的getimagesize()在必要时可以被调试。
function wp_getimagesize( $filename, array &$image_info = null ) { // Don't silence errors when in debug mode, unless running unit tests. if ( defined( 'WP_DEBUG' ) && WP_DEBUG && ! defined( 'WP_RUN_CORE_TESTS' ) ) { if ( 2 === func_num_args() ) { $info = getimagesize( $filename, $image_info ); } else { $info = getimagesize( $filename ); } } else { /* * Silencing notice and warning is intentional. * * getimagesize() has a tendency to generate errors, such as * "corrupt JPEG data: 7191 extraneous bytes before marker", * even when it's able to provide image size information. * * See https://core.trac.wordpress.org/ticket/42480 */ if ( 2 === func_num_args() ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors $info = @getimagesize( $filename, $image_info ); } else { // phpcs:ignore WordPress.PHP.NoSilencedErrors $info = @getimagesize( $filename ); } } if ( false !== $info ) { return $info; } // For PHP versions that don't support WebP images, // extract the image size info from the file headers. if ( 'image/webp' === wp_get_image_mime( $filename ) ) { $webp_info = wp_get_webp_info( $filename ); $width = $webp_info['width']; $height = $webp_info['height']; // Mimic the native return format. if ( $width && $height ) { return array( $width, $height, IMAGETYPE_WEBP, sprintf( 'width="%d" height="%d"', $width, $height ), 'mime' => 'image/webp', ); } } // The image could not be parsed. return false; }