Calendar block showing fatal error

cal_days_in_month() is a PHP function (PHP 4.07 and greater). Which version of PHP do you have?

I too have suffered from this error, though I am using PHP 5.0.4. I currently re-compiling PHP to add the mbstring extension... I don't see this as helping, but who knows...

Andrew

You need to be sure the extension 'calendar' is compiled. See documentation at php.net

Here's a patch that adds a replacement for the cal_days_in_month() function if you're using a version of PHP that does not have it. The file is not using Unix line endings so I don't know if the patch will work properly. Just in case here is the new function, just put it somewhere in your calendar_block.module file. I got the solution from http://drupal.org/node/310120

/**
 * Calendar days in month
 *
 * Some PHP versions don't have cal_days_in_month(), this accounts for that.
 */

if(!function_exists('cal_days_in_month')){
	
	function cal_days_in_month($calendar,$month, $year) {
		// $calendar just gets ignored, assume gregorian
		// calculate number of days in a month
		return $month == 2 ? ($year % 4 ? 28 : ($year % 100 ? 29 : ($year % 400 ? 28 : 29))) : (($month - 1) % 7 % 2 ? 30 : 31);
	}
	 
}

Thanks a lot jmstacey!

I've taken your code into a new release.