+ public static function useSlowPrinter() {
+ if ( !function_exists( 'wddx_serialize_value' ) ) {
+ return true;
+ }
+
+ // Some versions of PHP have a broken wddx_serialize_value, see
+ // PHP bug 45314. Test encoding an affected character (U+00A0)
+ // to avoid this.
+ $expected =
+ "<wddxPacket version='1.0'><header/><data><string>\xc2\xa0</string></data></wddxPacket>";
+ if ( wddx_serialize_value( "\xc2\xa0" ) !== $expected ) {
+ return true;
+ }
+
+ // Some versions of HHVM don't correctly encode ampersands.
+ $expected =
+ "<wddxPacket version='1.0'><header/><data><string>&</string></data></wddxPacket>";
+ if ( wddx_serialize_value( '&' ) !== $expected ) {
+ return true;
+ }
+
+ // Some versions of HHVM don't correctly encode empty arrays as subvalues.
+ $expected =
+ "<wddxPacket version='1.0'><header/><data><array length='1'><array length='0'></array></array></data></wddxPacket>";
+ if ( wddx_serialize_value( array( array() ) ) !== $expected ) {
+ return true;
+ }
+
+ // Some versions of HHVM don't correctly encode associative arrays with numeric keys.
+ $expected =
+ "<wddxPacket version='1.0'><header/><data><struct><var name='2'><number>1</number></var></struct></data></wddxPacket>";
+ if ( wddx_serialize_value( array( 2 => 1 ) ) !== $expected ) {
+ return true;
+ }
+
+ return false;
+ }
+