--TEST--
XMLReader: libxml2 XML Reader, read-only element values can not be modified
--CREDITS--
Mark Baker mark@lange.demon.co.uk at the PHPNW2017 Conference for PHP Testfest 2017
--EXTENSIONS--
xmlreader
--FILE--
<?php
// Set up test data in a new file
$xmlstring = '<?xml version="1.0" encoding="UTF-8"?>
<books><book num="1" idx="2">book1</book></books>';
$filename = __DIR__ . '/_014.xml';
file_put_contents($filename, $xmlstring);

// Load test data into a new XML Reader
$reader = new XMLReader();
if (!$reader->open($filename)) {
    exit('XML could not be read');
}

// Parse the data
while ($reader->read()) {
    if ($reader->nodeType != XMLREADER::END_ELEMENT) {
        // Find a node to try modifying
        if ($reader->nodeType == XMLREADER::ELEMENT && $reader->name == 'book') {
            // Try to set the value of the element from book1 to movie1
            try {
                $reader->value = 'movie1';
            } catch (Error $exception) {
                echo $exception->getMessage() . "\n";
            }
            // Try to set the value of the first "num" attribute from "1" to "num attribute 1"
            $attr = $reader->moveToFirstAttribute();
            try {
                $reader->value = 'num attribute 1';
            } catch (Error $exception) {
                echo $exception->getMessage() . "\n";
            }
            // Try to set the name of the first attribute from "num" to "number"
            try {
                $reader->name = 'number';
            } catch (Error $exception) {
                echo $exception->getMessage() . "\n";
            }
        }
    }
}

// clean up
$reader->close();
?>
--CLEAN--
<?php
unlink(__DIR__.'/_014.xml');
?>
--EXPECT--
Cannot write to read-only property
Cannot write to read-only property
Cannot write to read-only property