libxml_get_errors(3) [php man page]

LIBXML_GET_ERRORS(3)							 1						      LIBXML_GET_ERRORS(3)

libxml_get_errors - Retrieve array of errors

SYNOPSIS

       array libxml_get_errors (void  )

DESCRIPTION

	Retrieve array of errors.

RETURN VALUES

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

EXAMPLES

       Example #1

	      A libxml_get_errors(3) 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("
", $xmlstr);

	      if (!$doc) {
		  $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] . "
";
		  $return .= str_repeat('-', $error->column) . "^
";

		  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) .
			     "
  Line: $error->line" .
			     "
  Column: $error->column";

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

		  return "$return

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

";
	      }

	      ?>

	      The above example will output:

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

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

SEE ALSO

       libxml_get_last_error(3), libxml_clear_errors(3).

PHP Documentation Group 												      LIBXML_GET_ERRORS(3)

DOMDOCUMENT.GETELEMENTBYID(3)						 1					     DOMDOCUMENT.GETELEMENTBYID(3)

DOMDocument::getElementById - Searches for an element with a certain id

SYNOPSIS

       public DOMElement DOMDocument::getElementById (string  $elementId)

DESCRIPTION

	This function is similar to "DOMDocument::getElementsByTagName" but searches for an element with a given id.

	For  this  function  to  work,	you will need either to set some ID attributes with "DOMElement::setIdAttribute" or a DTD which defines an
       attribute to be of type ID. In the later case, you will need to validate your document with "DOMDocument::validate" or  DOMDocument::$vali-
       dateOnParse before using this function.

PARAMETERS

	      o $elementId
		- The unique id value for an element.

RETURN VALUES

	Returns the DOMElement or NULL if the element is not found.

EXAMPLES

       Example #1

	      DOMDocument::getElementById() Example

	      The following examples use book.xml which contains the following:

	      <?xml version="1.0" encoding="UTF-8"?>
	      <!DOCTYPE books [
		<!ELEMENT books   (book+)>
		<!ELEMENT book	  (title, author+, xhtml:blurb?)>
		<!ELEMENT title   (#PCDATA)>
		<!ELEMENT blurb   (#PCDATA)>
		<!ELEMENT author  (#PCDATA)>
		<!ATTLIST books   xmlns        CDATA  #IMPLIED>
		<!ATTLIST books   xmlns:xhtml  CDATA  #IMPLIED>
		<!ATTLIST book	  id	       ID     #IMPLIED>
		<!ATTLIST author  email        CDATA  #IMPLIED>
	      ]>
	      <?xml-stylesheet type="text/xsl" href="style.xsl"?>
	      <books xmlns="http://books.php/" xmlns:xhtml="http://www.w3.org/1999/xhtml">
		<book id="php-basics">
		  <title>PHP Basics</title>
		  <author email="jim.smith@basics.php">Jim Smith</author>
		  <author email="jane.smith@basics.php">Jane Smith</author>
		  <xhtml:blurb><![CDATA[
	      <p><em>PHP Basics</em> provides an introduction to PHP.</p>
	      ]]></xhtml:blurb>
		</book>
		<book id="php-advanced">
		  <title>PHP Advanced Programming</title>
		  <author email="jon.doe@advanced.php">Jon Doe</author>
		</book>
	      </books>

	      <?php

	      $doc = new DomDocument;

	      // We need to validate our document before refering to the id
	      $doc->validateOnParse = true;
	      $doc->Load('book.xml');

	      echo "The element whose id is 'php-basics' is: " . $doc->getElementById('php-basics')->tagName . "
";

	      ?>

	      The above example will output:

	      The element whose id is 'php-basics' is: book

SEE ALSO

       DOMDocument::getElementsByTagName.

PHP Documentation Group 											     DOMDOCUMENT.GETELEMENTBYID(3)