Suppress errors generated by specified WordPress plugins to make developing with debug mode on less painful.

local-error-handler.php

<?php
/**
 * Suppress errors generated by specified WordPress plugins.
 *
 * Include in the auto_prepend_file php.ini directive to ignore globally.
 *
 * @see http://plugins.trac.wordpress.org/browser/ostrichcize/tags/0.1/ostrichcize.php#L146
 *
 * @param string $errno The error number.
 * @param string $errstr The error message.
 * @param string $errfile Path to the file that caused the error.
 * @param int $errline Line number of the error.
 * @return bool True to success error reporting; false to use default error handler.
 */
function blazersix_error_handler( $errno, $errstr, $errfile, $errline ) {
	if ( E_STRICT == $errno ) {
		// Return true to disable all strict notices.
		//return true;
	}

	$patterns = array(
		'Facetious_Widget::',
		'GFCampaignMonitor::',
		'GFMailChimp::',
		'GFSurvey::',
		'GoogleSitemapGeneratorLoader::',
		'MR_Social_Sharing_Toolkit::',
		'PigLatin::',
		'Plugin_Revision_Control_UI::',
		'Post_Meta_Inspector::',
		'SAR_Generator::',
		'SAR_Settings::',

		'plugins/admin-color-schemer',
		'plugins/disqus',
		'plugins/gravityformscampaignmonitor',
		'plugins/gravityformsmailchimp',
		'plugins/gravityformssurvey',
		'plugins/instapress',
		'plugins/members',
		'plugins/nrelate-related-content',
		'plugins/page-template-dashboard',
		'plugins/redirection',
		'plugins/revision-control',
		'plugins/rewrite-rules-inspector',
		'plugins/shopp',
		'plugins/simple-link-list-widget',
		'plugins/thirstyaffiliates',
		'plugins/vip-scanner',
		'plugins/woocommerce',
		'plugins/woothemes-updater',
		'plugins/wp-zen-coding',
	);

	foreach ( $patterns as $pattern ) {
		$pattern = str_replace( array( '/', '\\' ), DIRECTORY_SEPARATOR, $pattern );

		if ( false !== strpos( $errstr, $pattern ) ) {
			return true;
		}

		if ( false !== strpos( $errfile, $pattern ) ) {
			return true;
		}
	}

	// The path was not found, so report the error.
	return false;
}
set_error_handler( 'blazersix_error_handler' );