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 $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

示例 #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

libxml_clear_errors() - Clear libxml error buffer
libxml_get_errors() - Retrieve array of errors

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User Contributed Notes 3 notes

down

B Crawford ¶

14 years ago


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.

down

marcovtwout ¶

9 years ago


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.

down

-7

james at dunmore dot me dot uk ¶

13 years ago


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)

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备份地址：http://www.lvesu.com/blog/php/function.libxml-use-internal-errors.php