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 ) );
    }
}