DirectoryIterator::isWritable()

(PHP 5,PHP 7)

Determine if current DirectoryIterator item can be written to

说明

publicDirectoryIterator::isWritable(void) : bool

Determines if the currentDirectoryIteratoritem is writable.

参数

此函数没有参数。

返回值

ReturnsTRUEif the file/directory is writable,otherwiseFALSE

范例

Example#1DirectoryIterator::isWritable()example

This example lists the files and directories which can be opened for writing in the directory containing the script.

<?php
$iterator = new DirectoryIterator(dirname(__FILE__));
foreach ($iterator as $fileinfo) {
    if ($fileinfo->isWritable()) {
        echo $fileinfo->getFilename() . "\n";
    }
}
?>

以上例程的输出类似于：

apples.txt
bananas.html
pears

参见

DirectoryIterator::getPerms() Get the permissions of current DirectoryIterator item
DirectoryIterator::isExecutable() Determine if current DirectoryIterator item is executable
DirectoryIterator::isReadable() Determine if current DirectoryIterator item can be read