异常
在线手册：中文 英文
PHP手册

The DomainException class

(PHP 5 >= 5.1.0)

简介

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

类摘要

DomainException extends LogicException {
/* 继承的方法 */
final public string Exception::getMessage ( void )
final public Exception Exception::getPrevious ( void )
final public int Exception::getCode ( void )
final public string Exception::getFile ( void )
final public int Exception::getLine ( void )
final public array Exception::getTrace ( void )
final public string Exception::getTraceAsString ( void )
public string Exception::__toString ( void )
final private void Exception::__clone ( void )
}
异常
在线手册：中文 英文
PHP手册
PHP手册 - N: The DomainException class

用户评论:

mateusz dot charytoniuk at gmail dot com (20-Oct-2011 08:45)

<?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);
}
?>

johnny dot bojowkarz at gmail dot com (19-Jul-2011 11:27)

<?php
function divide($dividend, $divisor)
{
  if($divisor == 0) {
    throw new \DomainException(
      'Zero does not belong to the domain of this functions.'
    );
  }
  return $dividend / $divisor;
}
?>

<?php
function logarithm($argument, $base)
{
  if($base <= 0 || $base == 1) {
    throw new \DomainException(
      'Specified base does not belong to the domain of this function.'
    );
  }
  if($argument <= 0) {
    throw new \DomainException(
      'Specified argument does not belong to the domain of this function.'
    );
  }
  return log($argument, $base);
}
?>