wp_getimagesize( string   $filename , array   $image_info  =  null  ): array|false

Source

 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() ) { $info = @getimagesize( $filename, $image_info ); } else { $info = @getimagesize( $filename ); } } if ( !  empty( $info ) && // Some PHP versions return 0x0 sizes from `getimagesize` for unrecognized image formats, including AVIFs. !  ( empty( $info[0] ) && empty( $info[1] ) ) ) { 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', ); } } // For PHP versions that don't support AVIF images,  extract the image size info from the file headers. if ( 'image/avif' === wp_get_image_mime( $filename ) ) { $avif_info = wp_get_avif_info( $filename ); $width  = $avif_info['width']; $height = $avif_info['height']; // Mimic the native return format. if ( $width && $height ) { return array( $width, $height, IMAGETYPE_AVIF, sprintf( 'width="%d" height="%d"', $width, $height ), 'mime' => 'image/avif', ); } } // The image could not be parsed. return false; }

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