When using this funtion, be sure to clear your internal error buffer. If you dn't and you are using this in a long running process, you may find that all your memory is used up.(PHP 5 >= 5.1.0, PHP 7, PHP 8)
libxml_use_internal_errors — Disable libxml errors and allow user to fetch error information as needed
libxml_use_internal_errors() allows you to disable standard libxml errors and enable user error handling.
   This function returns the previous value of
   use_errors.
  
| Versione | Descrizione | 
|---|---|
| 8.0.0 | use_errorsis nullable now. Previously, its default
       wasfalse. | 
Example #1 A libxml_use_internal_errors() example
This example demonstrates the basic usage of libxml errors and the value returned by this function.
<?php
// enable user error handling
var_dump(libxml_use_internal_errors(true));
// load the document
$doc = new DOMDocument;
if (!$doc->load('file.xml')) {
    foreach (libxml_get_errors() as $error) {
        // handle errors here
    }
    libxml_clear_errors();
}
?>Il precedente esempio visualizzerà:
bool(false)
When using this funtion, be sure to clear your internal error buffer. If you dn't and you are using this in a long running process, you may find that all your memory is used up.When using libxml_use_internal_errors(true), and perform a possibly memory intensive operation like simplexml_load_string() next, you might end up with a blank screen and no php error logged because the error message been suppressed.