libxml_clear_errors

Function name: libxml_clear_errors()

Function Description: The libxml_clear_errors() function is used to clear all errors in the libxml error buffer.

Applicable version: This function is available in PHP 5 >= 5.1.0, PHP 7 version.

Syntax: libxml_clear_errors(): void

Return value: This function does not return value.

Example:

 // 启用libxml 错误处理libxml_use_internal_errors(true); // 通过加载无效的XML 文件引发错误$doc = new DOMDocument(); $doc->load('invalid.xml'); // 获取所有的libxml 错误$errors = libxml_get_errors(); // 输出错误信息foreach ($errors as $error) { echo libxml_display_error($error); } // 清除错误缓冲区libxml_clear_errors(); // 自定义函数用于显示错误信息function libxml_display_error($error) { $return = "<br/>\n"; switch ($error->level) { case LIBXML_ERR_WARNING: $return .= "<b>Warning $error->code:</b> "; break; case LIBXML_ERR_ERROR: $return .= "<b>Error $error->code:</b> "; break; case LIBXML_ERR_FATAL: $return .= "<b>Fatal Error $error->code:</b> "; break; } $return .= trim($error->message); if ($error->file) { $return .= " in <b>$error->file</b>"; } $return .= " on line <b>$error->line</b>\n"; return $return; }

In the above example, we first enabled libxml error handling through libxml_use_internal_errors(true) . We then loaded an invalid XML file, causing an error in libxml. Next, we use the libxml_get_errors() function to get all libxml errors and use the custom function libxml_display_error() to display the error message. Finally, we use libxml_clear_errors() to clear the error buffer for subsequent processing.

grammar

 libxml_clear_errors ( )