is_infinite

Definition and usage

is_infinite() determines whether it is an infinite value.

Example

 <?php
echo is_infinite ( 2 ) ;
echo is_infinite ( log ( 0 ) ) ;
echo is_infinite ( 2000 ) ;
?>

Try it yourself

grammar

 is_infinite ( x )

illustrate

Return true if x is infinite (positive or negative), such as the result of log(0) or any value that exceeds the range of floating point numbers on this platform.