Check for a valid XML file PHP

With curl I dowload XML file and saved localy. How can I check this file is valid XML. After donloadedd I save to mysql information from this file.

    $url = '<URL to XML>';
    $local_path = "myxml.xml";
    $file_handle = fopen($local_path, "w");

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FILE, $file_handle);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_TIMEOUT, 5); // times out after 4s
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);
    $result = curl_exec($ch);

I tried this but not working.

if (filesize('myxml.xml')>0) {

    $str_xml = file_get_contents('myxml.xml');
        echo 'XML';
        echo 'NOT XML';

Code returned this WRONG

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 1: parser error : Start tag expected, '<' not found in

Where I wrong ?

Thanks in advance !


It is not the parsing of the XML that is wrong.

You are getting a misformed XML from the CURL retrieval. Do a echo of the $str_xml and see whats wrong with it!

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