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    ArithmeticError

    (PHP 7, PHP 8)

    简介

    当执行数学运算发生错误时抛出 ArithmeticError 。 这些错误包括尝试执行负数的位移，以及对任何可能会导致值超出 int 的范围 intdiv() 调用。

    类摘要

    class ArithmeticError extends Error {
    /* 继承的属性 */
    protected string $message = "";
    private string $string = "";
    protected int $code;
    protected string $file = "";
    protected int $line;
    private array $trace = [];
    private ?Throwable $previous = null;
    /* 继承的方法 */
    public Error::__construct(string $message = "", int $code = 0, ?Throwable $previous = null)
    final public Error::getMessage(): string
    final public Error::getPrevious(): ?Throwable
    final public Error::getCode(): int
    final public Error::getFile(): string
    final public Error::getLine(): int
    final public Error::getTrace(): array
    final public Error::getTraceAsString(): string
    public Error::__toString(): string
    private Error::__clone(): void
    }

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    nima dot shirinzadeh at gmail dot com
    4 years ago
    the first example shifted by the positive number and the result is 4, but the second example shifted by the negative number and the result is ArithmeticError(this example is the same for left shift)
    <?php

    $shif     =1;
    $number = 8;
    $result = $number >> $shif;
    echo     $result; //// 1000 >> 01000 = 4

    $shif =-1;
    $number = 8;
    $result = $number >> $shif;
    ////result is ArithmeticError
    ?>
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