PHP - Manual: DomainException

2024-12-22

InvalidArgumentException »

« BadMethodCallException

The DomainException class

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

简介

Exception thrown if a value does not adhere to a defined valid data domain.

类摘要

class DomainException extends LogicException {

/* 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 */

final public Exception::getMessage(): string

final public Exception::getPrevious(): ?Throwable

final public Exception::getCode(): int

final public Exception::getFile(): string

final public Exception::getLine(): int

final public Exception::getTrace(): array

final public Exception::getTraceAsString(): string

public Exception::__toString(): string

private Exception::__clone(): void

}

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User Contributed Notes 4 notes

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mateusz dot charytoniuk at gmail dot com ¶

10 years ago


<?php
function renderImage($imageResource, $imageType)
{
  switch ($imageType) {
  case 'jpg':
  case 'jpeg':
    header('Content-type: image/jpeg');
    imagejpeg($imageResource);
    break;
  case 'png':
    header('Content-type: image/png');
    imagepng($imageResource);
    break;
  default:
    throw new DomainException('Unknown image type: ' . $imageType);
    break;
  }
  imagedestroy($imageResource);
}
?>

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ja2016 at wir dot pl ¶

5 years ago


I think this kind of exception is perfect to throw when expected the  type of parameter, value etc. is good, but its value is out of domain. Look at RangeException:
>>Exception thrown to indicate range errors during program execution. Normally this means there was an arithmetic error other than under/overflow. This is the runtime version of DomainException.<<
So, this kind of exception is designed for logic error

When datatype is wrong, the better way is throwing InvalidArgumentException. 

<?php
// Here, use InvalidArgumentException
function media($x) {
    switch ($x) {
        case image:
            return 'PNG';
        break;
        case video:
            return 'MP4';
        break;
        default:
            throw new InvalidArgumentException ("Invalid media type!");
    }
}?>
This is completly diffirent situation than this:
<?php
// Here, use DomainException
$object = new Library ();
try {
    $object->allocate($x);
} catch (toFewMin $e) {
    throw new DomainException ("Minimal value to allocate is too high").
}
?>
The simillar situation, but problem occurs during runtime:
<?php
class library {
    function allocate($x) {
        if ($x<1000)
            throw new RangeException ("Value is too low!")
    }
}
?>
Summary: DomainException corresponds to RangeException and we should use them in simillar situations.  But first exception is designed to use when we are sure the problem is with our project, third-part elements etc. (simply: logical error), the second way is designed to use when we are sure the problem is with input data or environment (simply: runtime error).

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chmielewski dot thomas at gmail dot com ¶

7 years ago


<?php

function divide($divident, $divisor) {
    if(!is_numeric($divident) || !is_numeric($divisor)) {
        throw new InvalidArgumentException("Function accepts only numeric values");
    }
    if($divisor == 0) {
        throw new DomainException("Divisor must not be zero");
    }
    return $divident / $divisor;
}

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Cruiser ¶

4 years ago


Quote: "In data management and database analysis, a data domain refers to all the values which a data element may contain."

Source: https://en.wikipedia.org/wiki/Data_domain

This exception has confused me a bit, DataDomainException, or DataTypeException may have been more descriptive.

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官方地址：https://www.php.net/manual/en/class.domainexception.php

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The DomainException class

简介

类摘要

User Contributed Notes 4 notes