How check if a String is a Valid XML with-out Displaying a Warning in PHP

Question

i was trying to check the validity of a string as xml using this simplexml_load_string()Docs function but it displays a lot of warning messages.

How can I check whe

Answer 1

My version like this:

//validate only XML. HTML will be ignored.

function isValidXml($content)
{
    $content = trim($content);
    if (empty($content)) {
        return false;
    }
    //html go to hell!
    if (stripos($content, '') !== false) {
        return false;
    }

    libxml_use_internal_errors(true);
    simplexml_load_string($content);
    $errors = libxml_get_errors();          
    libxml_clear_errors();  

    return empty($errors);
}

Tests:

//false
var_dump(isValidXml(''));
//true
var_dump(isValidXml(''));
//false
var_dump(isValidXml(null));
//false
var_dump(isValidXml(1));
//false
var_dump(isValidXml(false));
//false
var_dump(isValidXml('asdasds'));