What are common pitfalls when using the strpos() function in PHP for comparing data from XML files?

When using the strpos() function in PHP to compare data from XML files, a common pitfall is that the function may return a false positive if the search string is found within another string in the XML data. To avoid this issue, it is recommended to use the simplexml_load_file() function to parse the XML data and then compare the values directly.

$xml = simplexml_load_file('data.xml');

foreach($xml->children() as $child) {
    if((string)$child->element == 'search_value') {
        // Perform desired action
    }
}