PHP/File Directory/unlink — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
(нет различий)
| |
Текущая версия на 07:04, 26 мая 2010
Содержание
Delete a file with the unlink() function.
Its syntax is: int unlink (string file)
<?
unlink("data.txt");
?>
Deleting a file
<?php
$file = "/tmp/junk.txt";
unlink($file) or die ("can"t delete $file: $php_errormsg");
?>
Deleting files
<?php
function delete( $file )
{
if( unlink( $file ) )
{
echo( "$file<br>has been deleted<hr>" );
}
else
{
echo( "Unable to delete $file<hr>" );
}
}
?>
<html>
<head>
<title>Deleting files</title>
<head>
<body>
<?php
# for Linux use...
#$file_A = "/errlog_bak";
#$file_B = "/errlog_not";
# for Windows use...
$file_A = "C:\\errlog.bak";
$file_B = "C:\\errlog.not";
delete($file_A);
@delete($file_B);
?>
</body>
</html>
Deleting Files with unlink( )
<?
$filename = "data.txt";
if (unlink($filename)) {
print "Deleted $filename!\n";
} else {
print "Delete of $filename failed!\n";
}
?>
Moving a file across filesystems
<?php
if (copy("/tmp/code.c","/usr/local/src/code.c")) {
unlink("/tmp/code.c");
}
?>
Using file_exists, touch, and unlink together
<?php
$file_name="test.txt";
if(file_exists($file_name)) {
echo ("$file_name does exist.<br />");
}
else {
echo ("The file $file_name does not exist.<br />");
touch($file_name);
}
if(file_exists($file_name)) {
echo ("The file $file_name does exist.<br />");
unlink($file_name);
}
else {
echo ("The file $file_name does not exist.<br />");
}
if(file_exists($file_name)) {
echo ("The file $file_name does exist.<br />");
}
else {
echo ("The file $file_name does not exist.<br />");
}
?>
Using the unlink() Function
<?php
$files = glob("/tmp/*.tmp");
foreach($files as $val) {
unlink($val);
}
?>
You can remove an existing file with the unlink() function.
<?
unlink("myfile.txt");
?>