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Fix: cast $blog_id to int in wp_cache_clear_cache() to prevent crash on non-multisite installs #1042

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DeveloperBatuhanALGUL wants to merge 1 commit into from
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Fix: cast $blog_id to int in wp_cache_clear_cache() to prevent crash on non-multisite installs #1042

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9 changes: 5 additions & 4 deletions wp-cache-phase2.php
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Original file line number Diff line number Diff line change
Expand Up @@ -2404,7 +2404,7 @@ function wp_cache_get_ob( &$buffer ) {
if ( ! $fr2 ) {
wp_cache_debug( 'Error. Supercache could not write to ' . str_replace( ABSPATH, '', $tmp_cache_filename ), 1 );
wp_cache_add_to_buffer( $buffer, "File not cached! Super Cache Couldn't write to: " . str_replace( ABSPATH, '', $tmp_cache_filename ) );
@fclose( $fr );
if ( $fr ) { fclose( $fr ); }
@unlink( $tmp_wpcache_filename );
wp_cache_writers_exit();
return wp_cache_maybe_dynamic( $buffer );
Expand All @@ -2416,7 +2416,7 @@ function wp_cache_get_ob( &$buffer ) {
if ( ! $gz ) {
wp_cache_debug( 'Error. Supercache could not write to ' . str_replace( ABSPATH, '', $tmp_cache_filename ) . '.gz', 1 );
wp_cache_add_to_buffer( $buffer, "File not cached! Super Cache Couldn't write to: " . str_replace( ABSPATH, '', $tmp_cache_filename ) . '.gz' );
@fclose( $fr );
if ( $fr ) { fclose( $fr ); }
@unlink( $tmp_wpcache_filename );
@fclose( $fr2 );
@unlink( $tmp_cache_filename );
Expand Down Expand Up @@ -2508,7 +2508,7 @@ function wp_cache_get_ob( &$buffer ) {

if ( $fr ) {
$supercacheonly = false;
fclose( $fr );
if ( $fr ) { fclose( $fr ); }
if ( filesize( $tmp_wpcache_filename ) == 0 ) {
wp_cache_debug( "Warning! The file $tmp_wpcache_filename was empty. Did not rename to {$dir}{$cache_filename}", 5 );
@unlink( $tmp_wpcache_filename );
Expand Down Expand Up @@ -2962,7 +2962,7 @@ function wp_cache_shutdown_callback() {
$fr = @fopen( $tmp_meta_filename, 'w' );
if ( $fr ) {
fwrite( $fr, $serial );
fclose( $fr );
if ( $fr ) { fclose( $fr ); }
@chmod( $tmp_meta_filename, 0666 & ~umask() );
if ( ! @rename( $tmp_meta_filename, $final_meta_filename ) ) {
@unlink( $dir . $final_meta_filename );
Expand Down Expand Up @@ -3069,6 +3069,7 @@ function wp_cache_clear_cache_on_menu() {

/* Clear out the cache directory. */
function wp_cache_clear_cache( $blog_id = 0 ) {
$blog_id = (int) $blog_id;
global $cache_path;

if ( $blog_id == 0 ) {
Expand Down