PhpBugTests.php

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<?php
class PhpXmlBugTester {
        private $parsedData = '';
        public $ok = false;
        public function __construct() {
                $charData = '<b>c</b>';
                $xml = '<a>' . htmlspecialchars( $charData ) . '</a>';

                $parser = xml_parser_create();
                xml_set_character_data_handler( $parser, array( $this, 'chardata' ) );
                $parsedOk = xml_parse( $parser, $xml, true );
                $this->ok = $parsedOk && ( $this->parsedData == $charData );
        }
        public function chardata( $parser, $data ) {
                $this->parsedData .= $data;
        }
}

class PhpRefCallBugTester {
        public $ok = false;

        function __call( $name, $args ) {
                $old = error_reporting( E_ALL & ~E_WARNING );
                call_user_func_array( array( $this, 'checkForBrokenRef' ), $args );
                error_reporting( $old );
        }

        function checkForBrokenRef( &$var ) {
                if ( $var ) {
                        $this->ok = true;
                }
        }

        function execute() {
                $var = true;
                call_user_func_array( array( $this, 'foo' ), array( &$var ) );
        }
}