wfBaseConvert(): Work around PHP Bug #50175

[lhc/web/wiklou.git] / includes / GlobalFunctions.php

diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index ddea620..cfe9a87 100644 (file)
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -3366,7 +3366,10 @@ function wfBaseConvert( $input, $sourceBase, $destBase, $pad = 1,
        );
 
        if ( extension_loaded( 'gmp' ) && ( $engine == 'auto' || $engine == 'gmp' ) ) {
-               $result = gmp_strval( gmp_init( $input, $sourceBase ), $destBase );
+               // Removing leading zeros works around broken base detection code in
+               // some PHP versions (see <https://bugs.php.net/bug.php?id=50175> and
+               // <https://bugs.php.net/bug.php?id=55398>).
+               $result = gmp_strval( gmp_init( ltrim( $input, '0' ), $sourceBase ), $destBase );
        } elseif ( extension_loaded( 'bcmath' ) && ( $engine == 'auto' || $engine == 'bcmath' ) ) {
                $decimal = '0';
                foreach ( str_split( strtolower( $input ) ) as $char ) {