DirectoryIterator::isReadable()

(PHP 5,PHP 7)

Determine if current DirectoryIterator item can be read

说明

publicDirectoryIterator::isReadable(void) : bool

Determines if the currentDirectoryIteratoritem is readable.

参数

此函数没有参数。

返回值

ReturnsTRUEif the file is readable,otherwiseFALSE

范例

Example#1DirectoryIterator::isReadable()example

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

以上例程的输出类似于：

apple.jpg
banana.jpg
example.php
pears.jpg

参见

DirectoryIterator::isExecutable() Determine if current DirectoryIterator item is executable
DirectoryIterator::isWritable() Determine if current DirectoryIterator item can be written to
DirectoryIterator::getPerms() Get the permissions of current DirectoryIterator item