RecursiveDirectoryIterator::__construct()

(PHP 5 >= 5.1.2, PHP 7)

Constructs a RecursiveDirectoryIterator

说明

Constructs a RecursiveDirectoryIterator() for the provided $path.

参数

The path of the directory to be iterated over.

Flags may be provided which will affect the behavior of some methods. A list of the flags can found under FilesystemIterator predefined constants. They can also be set later with FilesystemIterator::setFlags().

返回值

Returns the newly created RecursiveDirectoryIterator.

错误／异常

Throws an UnexpectedValueException if the $path cannot be found or is not a directory.

范例

RecursiveDirectoryIterator example

以上例程的输出类似于：

SubPathName: fruit/apple.xml
SubPath:     fruit
Key:         /tmp/fruit/apple.xml
SubPathName: stuff.xml
SubPath:     
Key:         /tmp/stuff.xml
SubPathName: veggies/carrot.xml
SubPath:     veggies
Key:         /tmp/veggies/carrot.xml

参见

• FilesystemIterator::__construct() Constructs a new filesystem iterator
• RecursiveIteratorIterator::__construct() Construct a RecursiveIteratorIterator
• FilesystemIterator predefined constants

You can use RecursiveDirectoryIterator::FOLLOW_SYMLINKS as a flag to the constructor to have RecursiveDirectoryIterator follow symlinks, which it does not do by default.
[EDIT BY danbrown AT php DOT net on 16-JUL-2012: Contains a typofix provided by (lightrekky AT gmail DOT com) in note #109280 on 02-JUL-2012.]

The two default flags are zero (virtual) as with my PHP versions (5.3 and 5.4). Which means you can not check if those are set or not with the & bitwise operator:

But this also allows that you can use other flags right ahead without repeating the default ones:

There is no need to repeat the default flags. Please note that this is different to FilesystemIterator which has as well the SKIP_DOTS flag as default which is non-zero: 

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