simple_backtrace.php

/**
 * a simpler version of debug_backtrace()
 *
 *  @param boolean  $show_args Pass true to display argument values in the output
 *  @param boolean  $expand_objects when $show_args == true, pass true to expand object values, default to false to avoid over-verbosity
 *
 */
function simple_backtrace( $show_args = false, $expand_objects = false )
{
	$tracers = debug_backtrace();

	$new_trace = array();
	foreach ( $tracers AS $tracer )
	{
		$line = '';

		if ( isset( $tracer['class'] ) )
		{
			$line .= $tracer['class'] . $tracer['type'];
		}

		$args = array();
		if ( !empty( $tracer['args'] ) )
		{
			foreach ( $tracer['args'] AS $arg )
			{
				$args[] = gettype( $arg );
			}
		}

		$line .= $tracer['function'] . '(' . implode( ', ', $args ) . ') in ';

		if ( !empty( $tracer['file'] ) )
		{
			$line .= $tracer['file'];
		}
		else
		{
			$line .= 'Unknown';
		}

		if ( !empty( $tracer['line'] ) )
		{
			 $line .= ':' . $tracer['line'];
		}
		else
		{
			$line .= ':Unknown';
		}

		if ( $tracer['function'] == 'mysqlquery' )
		{
			$line .= "\n      Trying the following sql:\n          " . $tracer['args'][0];
		}

        if ( $show_args )
        {
            $line .= "\n            Argument values:";
            foreach ( $tracer['args'] AS $k => $arg )
            {
                $k = $k+1;

                if ( gettype($arg) != 'object' || (gettype($arg) == 'object' && $expand_objects) )
                {
                    $line .= "\n                  #$k (" . gettype($arg) . "): " . print_r($arg, true);
                }
                else
                {
                    $line .= "\n                  #$k (" . gettype($arg) . "): " . get_class( $arg );
                }
            }

        }

		$new_trace[] = $line;
	}

	return $new_trace;
}