PHP 5.4.33 Released

The InvalidArgumentException class

(PHP 5 >= 5.1.0)

Introduzione

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

Sommario dellla classe

InvalidArgumentException extends LogicException {
/* Proprietà ereditate */
protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
/* Metodi ereditati */
final public string Exception::getMessage ( void )
final public Exception Exception::getPrevious ( void )
final public mixed 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 )
}
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User Contributed Notes 2 notes

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-2
Joey at anti-culture dot net
3 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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-3
edsonhoraciojunior at gmail dot com
10 months ago
A version of Joey's code that validates if the number really isn't int:

function tripleInteger($int)
{
  // if is a number and is not float (doesn't have a decimal separator)
  if(is_numeric($int) && strpos($int, ".") === false) {
    $int = intval($int);
  } 
  if(!is_int($int))
    throw new InvalidArgumentException('tripleInteger function only accepts integers. Input was: '.$int);
  return $int * 3;
}
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