PHP is_infinite() Function
The PHP is_infinite() function is used to check if the argument is infinite or not. It returns true (1) if the argument is infinite (positive or negative), else returns false/nothing.
Syntax
is_infinite(x)
Parameters
x |
Required. Specify the value. |
Return Value
Returns true (1) if the argument is infinite, else returns false/nothing.
Example:
In the example below, is_infinite() function is used to check if the argument is infinite.
<?php echo var_dump(is_infinite(10)); echo var_dump(is_infinite(-10)); echo var_dump(is_infinite(log(0))); echo "\n"; echo var_dump(is_infinite(INF)); echo var_dump(is_infinite(-INF)); echo var_dump(is_infinite(NAN)); ?>
The output of the above code will be:
bool(false) bool(false) bool(true) bool(true) bool(true) bool(false)
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