-
-
var_dump(is_file('a_file.txt')) . "\n";
- var_dump(is_file('/usr/bin/')) . "\n";
- ?>
-
输出：
bool(true)
bool(false)
例2：
-
-
function isfile($file){
- return preg_match('/^[^.^:^?^-][^:^?]*.(?i)' . getexts() . '$/',$file);
- //first character cannot be . : ? - subsequent characters can't be a : ?
- //then a . character and must end with one of your extentions
- //getexts() can be replaced with your extentions pattern
- }
- function getexts(){
- //list acceptable file extensions here
- return '(app|avi|doc|docx|exe|ico|mid|midi|mov|mp3|
- mpg|mpeg|pdf|psd|qt|ra|ram|rm|rtf|txt|wav|word|xls)';
- }
- echo isfile('/Users/YourUserName/Sites/index.html');
- ?>
例3：
-
-
function deletefolder($path)
- {
- if ($handle=opendir($path))
- {
- while (false!==($file=readdir($handle)))
- {
- if ($file"." AND $file"..")
- {
- if (is_file($path.'/'.$file))
- {
- @unlink($path.'/'.$file);
- }
- if (is_dir($path.'/'.$file))
- {
- deletefolder($path.'/'.$file);
- @rmdir($path.'/'.$file);
- }
- }
- }
- }
- }
- ?>
| 
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