PHP Handbuch
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# is_infinite

(PHP 4 >= 4.2.0, PHP 5)

is_infinite -- Finds whether a value is infinite

## Description

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.

See also is_finite() and is_nan().

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