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(PHP 7, PHP 8)


ArithmeticError 当执行数学运算时发生错误时被抛出。PHP 7.0 these errors include attempting to perform a bitshift by a negative amount, and any call to intdiv() that would result in a value outside the possible bounds of an integer.


class ArithmeticError extends Error {
/* 继承的属性 */
protected string $message;
protected int $code;
protected string $file;
protected int $line;
/* 继承的方法 */
final public Error::getMessage(): string
final public Error::getCode(): mixed
final public Error::getFile(): string
final public Error::getLine(): int
final public Error::getTrace(): array
final public Error::getTraceAsString(): string
public Error::__toString(): string
final private Error::__clone(): void
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User Contributed Notes 1 note

nima dot shirinzadeh at gmail dot com
9 months 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)

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

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