Be careful when using this method, as the functionality isn't exactly the same as instantiating the extending class directly. This can really trip you up if you're using type hints or instanceof checks.
<?php
class CustomFileInfo extends SplFileInfo
{
public function getExtension()
{
$ext = strtolower(parent::getExtension());
return 'jpeg' === $ext ? 'jpg' : $ext;
}
}
$path = __DIR__ . '/foobar.jpeg';
$good = new CustomFileInfo($path);
echo "<pre>";
var_dump($good instanceof SplFileInfo);
var_dump($good instanceof CustomFileInfo);
$bad = new SplFileInfo($path);
$bad->setInfoClass('CustomFileInfo');
var_dump($bad instanceof SplFileInfo);
var_dump($bad instanceof CustomFileInfo);
echo "</pre>";
?>
Outputs:
bool(true)
bool(true)
bool(true)
bool(false)
SplFileInfo::setInfoClass
(PHP 5 >= 5.1.2, PHP 7)
SplFileInfo::setInfoClass — Sets the class used with SplFileInfo::getFileInfo() and SplFileInfo::getPathInfo()
Opis
public SplFileInfo::setInfoClass
([ string
$class_name = "SplFileInfo"
] ) : voidUse this method to set a custom class which will be used when SplFileInfo::getFileInfo() and SplFileInfo::getPathInfo() are called. The class name passed to this method must be SplFileInfo or a class derived from SplFileInfo.
Parametry
-
class_name -
The class name to use when SplFileInfo::getFileInfo() and SplFileInfo::getPathInfo() are called.
Zwracane wartości
Nie jest zwracana żadna wartość.
Przykłady
Przykład #1 SplFileInfo::setFileClass() example
<?php
// Define a class which extends SplFileInfo
class MyFoo extends SplFileInfo {}
$info = new SplFileInfo('foo');
// Set the class name to use
$info->setInfoClass('MyFoo');
var_dump($info->getFileInfo());
?>
Powyższy przykład wyświetli coś podobnego do:
object(MyFoo)#2 (0) { }
add a note
User Contributed Notes 1 note
Eugene Kunkel ¶
4 years ago
