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libxml_get_errors

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

libxml_get_errors Retrieve array of errors

说明

libxml_get_errors(): array

Retrieve array of errors.

参数

此函数没有参数。

返回值

Returns an array with LibXMLError objects if there are any errors in the buffer, or an empty array otherwise.

范例

示例 #1 A libxml_get_errors() example

This example demonstrates how to build a simple libxml error handler.

<?php

libxml_use_internal_errors
(true);

$xmlstr = <<< XML
<?xml version='1.0' standalone='yes'?>
<movies>
<movie>
<titles>PHP: Behind the Parser</title>
</movie>
</movies>
XML;

$doc = simplexml_load_string($xmlstr);
$xml = explode("\n", $xmlstr);

if (
$doc === false) {
$errors = libxml_get_errors();

foreach (
$errors as $error) {
echo
display_xml_error($error, $xml);
}

libxml_clear_errors();
}


function
display_xml_error($error, $xml)
{
$return = $xml[$error->line - 1] . "\n";
$return .= str_repeat('-', $error->column) . "^\n";

switch (
$error->level) {
case
LIBXML_ERR_WARNING:
$return .= "Warning $error->code: ";
break;
case
LIBXML_ERR_ERROR:
$return .= "Error $error->code: ";
break;
case
LIBXML_ERR_FATAL:
$return .= "Fatal Error $error->code: ";
break;
}

$return .= trim($error->message) .
"\n Line: $error->line" .
"\n Column: $error->column";

if (
$error->file) {
$return .= "\n File: $error->file";
}

return
"$return\n\n--------------------------------------------\n\n";
}

?>

以上例程会输出:

  <titles>PHP: Behind the Parser</title>
----------------------------------------------^
Fatal Error 76: Opening and ending tag mismatch: titles line 4 and title
  Line: 4
  Column: 46

--------------------------------------------

参见

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User Contributed Notes 1 note

up
3
lech
5 years ago
Please beware that the column property seems almost always to be invalid. I thought it only occurred when the line in question was long (and I was just about to submit a bug report with an example), however, at the time of posting, you can even see the problem in the example provided on this page: line 4 does not even have 46 characters. Where the XML line is long, the difference can be very large.

This property comes from the libxml extension, so in any case I don't think this is a PHP bug, however it is worth knowing that the value might be totally unreliable to save some confusion.

The PHP documentation page for the libXMLError class gives some indication, stating:

"This property isn't entirely implemented in libxml and therefore 0 is often returned."

(My libxml version: 2.9.1)
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