libxml_use_internal_errors

(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

说明

libxml_use_internal_errors ( bool|null $use_errors = null ) : bool

libxml_use_internal_errors() allows you to disable standard libxml errors and enable user error handling.

参数

use_errors

Enable (true) user error handling or disable (false) user error handling. Disabling will also clear any existing libxml errors.

返回值

This function returns the previous value of use_errors.

更新日志

版本 说明
8.0.0 use_errors is nullable now. Previously, its default was false.

范例

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();
}

?>

以上例程会输出:

bool(false)

参见

User Contributed Notes

marcovtwout 07-May-2013 01:05
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.
james at dunmore dot me dot uk 21-Aug-2008 03:03
We use a custom error handler using  set_error_handler()  I found that after I call

libxml_use_internal_errors(false);

It resets my error_handler - not sure if this is a bug or not, I will report it as a bug - however, I needed to repeat my call to set_error_handler

(did confuse me for a while)
B Crawford 03-Oct-2007 06:22
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.
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