is_infinite

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

Finds whether a value is infinite

bool is_infinite ( float $val )

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 platform.

Parameters:

val

The value to check

Returns:

TRUE if val is infinite, else FALSE.

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