Ignore

Overview

This example will show you how to ignore HTML_Progress2 errors but keep them in stack.

Exceptions will be ignored as all other errors, so line 49 will be reached !

As you can see on browser screen, error are kept in stack with informations (code, level, params) and it's up to you to choose to display them or not (lines 40-47).

Screenshot

3 errors has occured

error #1
Array ( [code] => -100 [level] => exception [params] => Array ( [var] => $min [was] => string [expected] => integer [paramnum] => 3 ) )

error #2
Array ( [code] => -100 [level] => error [params] => Array ( [var] => $min [was] => -1 [expected] => positive [paramnum] => 1 ) )

error #3
Array ( [code] => -100 [level] => exception [params] => Array ( [var] => $continuous [was] => string [expected] => boolean [paramnum] => 1 ) )

still alive !

Demonstration

warning For security reasons live demo is not available

Dependencies

This example requires mandatory resources :

PHP >= 4.2.0
PEAR >= 1.3.1
PEAR::HTML_Progress2 >= 2.0.0
PEAR::HTML_Common >= 1.2.1
PEAR::PHP_Compat >= 1.3.1

Explains step by step

On example A, all errors will be proceed by the user error handler defined by option error_handler (line 28). This function myErrorHandler declared on lines 21-24, returns NULL value because we have decided to ignore all errors and do nothing.

Option	Value	Default
error_handler	myErrorHandler	HTML_Progress2::_errorHandler

Default behaviour is to kept errors in stack, and especially basic informations (code, level, params) if the error_handler function returns NULL.

Source Code

<?php
/**
* Simply ignores html_progress2 errors that occurs
* with PEAR_Error handler.
*
* @version $Id: errorignore.php,v 1.1 2005/06/12 21:03:04 farell Exp $
* @author Laurent Laville <pear@laurent-laville.org>
* @package HTML_Progress2
* @subpackage Examples
* @access public
*/
require_once 'HTML/Progress2.php';
function dump($title, $e)
{
echo "<h2> $title </h2>";
print_r($e);
echo '<hr/>';
}
function myErrorHandler()
{
return null;
}
// Example A. ---------------------------------------------
$prefs = array('error_handler' => 'myErrorHandler');
// A1. Exception
$pb1 = new HTML_Progress2($prefs, HTML_PROGRESS2_BAR_VERTICAL, '0', 130);
// A2. Error
$pb1->setMinimum(-1);
// A3. Exception
$pb1->setIndeterminate('true');
$countErrors = $pb1->hasErrors();
if ($countErrors > 0) {
echo "<h1>$countErrors errors has occured </h1>";
for ($i=0; $i<$countErrors; $i++) {
$e = $pb1->getError();
dump('error #'.($i+1), $e);
}
}
print 'still alive !';
?>