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The UnderflowException class

(PHP 5 >= 5.1.0, PHP 7)

Introducere

Exception thrown when performing an invalid operation on an empty container, such as removing an element.

Sinopsisul clasei

UnderflowException extends RuntimeException {

/* Proprietăți moștenite */

protected string $message ;

protected int $code ;

protected string $file ;

protected int $line ;

/* Metode moștenite */

public Exception::__construct ([ string $message = "" [, int $code = 0 [, Throwable $previous = null ]]] )

final public Exception::getMessage ( ) : string

final public Exception::getPrevious ( ) : Throwable

final public Exception::getCode ( ) : mixed

final public Exception::getFile ( ) : string

final public Exception::getLine ( ) : int

final public Exception::getTrace ( ) : array

final public Exception::getTraceAsString ( ) : string

public Exception::__toString ( ) : string

final private Exception::__clone ( ) : void

}

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User Contributed Notes 1 note

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-3

evguenia dot chagnon at gmail dot com ¶

7 years ago


UnderflowException handles exceptions due to a value being too small to maintain precision, resulting in loss of accuracy. In PHP, this can occurs when using floats:

echo (1-0.9) // 0.1
echo (1-0.99) // 0.01
echo (1-0.999) // 0.001
echo (1-0.9999) // 9.9999999999989E-05
echo (1-0.99999) // 9.9999999999545E-06
echo (1-0.999999) // 1.0000000000288E-06

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