is_finite

Definition and usage

is_finite() function determines whether it is a finite value.

Example

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

Try it yourself

grammar

 is_finite ( x )

illustrate

Return true if x is a legal finite value in the range allowed by PHP floating point numbers on the native platform.