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(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

is_infiniteFinds whether a value is infinite


is_infinite(float $num): bool

Returns true if num is infinite (positive or negative), like the result of log(0) or any value too big to fit into a float on this platform.



The value to check

Return Values

true if num is infinite, else false.

See Also

  • is_finite() - Finds whether a value is a legal finite number
  • is_nan() - Finds whether a value is not a number

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