PHP-----文件系统的交互

本文讲解php中于文件交互中所使用的函数

代码示例

File Detail

<?php
date_default_timezone_set("PRC");

$path = "/Library/WebServer/Documents/uploads/";
$file = basename($path);
echo "

Details of file:".$file."</h1>"; echo "<h2>File Data</h2>"; echo 'File last accessed : '.date('j F Y H i', fileatime($file)).'
';
echo 'File last modified : '.date('j F Y H i', filemtime($file)).'
';

$user = posix_getpwuid(fileowner($file));
echo 'File owner: '.$user['name'].'
';

$group = posix_getgrgid(filegroup($file));
echo 'File group: '.$group['name'].'
';

echo 'File permissions: '.decoct(fileperms($file)).'
';

echo 'File type: '.filetype($file).'
';

echo 'File size: '.filesize($file).'bytes
';

echo "

File Tests

";
echo 'is_dir: '.(is_dir($file) ? 'true' : 'false').'<br />'; echo 'is_executable: '.(is_executable($file) ? 'true' : 'false').'
';
echo 'is_file: '.(is_file($file) ? 'true' : 'false').'<br />'; echo 'is_link: '.(is_link($file) ? 'true' : 'false').'
';
echo 'is_readable: '.(is_readable($file) ? 'true' : 'false').'<br />'; echo 'is_writable: '.(is_writable($file) ? 'true' : 'false').'
';
?>

运行结果

Details of file:uploads

File Data

File last accessed : 12 October 2016 10 42
File last modified : 12 October 2016 10 36
File owner: XXXX
File group: wheel
File permissions: 40777
File type: dir
File size: 170bytes
File Tests

is_dir: true
is_executable: true
is_file: false
is_link: false
is_readable: true
is_writable: true