The InvalidArgumentException class

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

简介

Exception thrown if an argument is not of the expected type.

类摘要

class InvalidArgumentException 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 1 note

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Joey at anti-culture dot net ¶

11 years ago


In my opinion this exception is invaluable for validating arguments- for example providing strict typing a la C:

<?php
function tripleInteger($int)
{
  if(!is_int($int))
    throw new InvalidArgumentException('tripleInteger function only accepts integers. Input was: '.$int);
  return $int * 3;
}

$x = tripleInteger(4); //$x == 12
$x = tripleInteger(2.5); //exception will be thrown as 2.5 is a float
$x = tripleInteger('foo'); //exception will be thrown as 'foo' is a string
$x = tripleInteger('4'); //exception will throw as '4' is also a string

?>

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

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PHP官方手册 - 互联网笔记

The InvalidArgumentException class

简介

类摘要

User Contributed Notes 1 note