php man page for is_infinite

IS_INFINITE(3)								 1							    IS_INFINITE(3)

is_infinite - Finds whether a value is infinite

SYNOPSIS
       bool is_infinite (float	$val)

DESCRIPTION
	Returns  TRUE if $val is infinite (positive or negative), like the result of log(0) or any value too big to fit into a float on this plat-
       form.

PARAMETERS
	      o $val
		- The value to check

RETURN VALUES
       TRUE if $val is infinite, else FALSE.

SEE ALSO
       is_finite(3), is_nan(3).

PHP Documentation Group 													    IS_INFINITE(3)