note 40469 added to function.unlink
| From: | julien_roumagnac at hotmail dot com | Date: | Thu, 04 Mar 2004 15:21:45 +0000 |
| Subject: | note 40469 added to function.unlink | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-66256@lists.php.net to get a copy of this message | ||
Just a little correction to the Pablo Rosciani's function,
There is a trap because if you have a filename like "filenamepart1.filenamepart2.ext" and
that you use it like unlink_wc("mydir/", "*.ext"), it won't work besause
in the script :
$base = "filenamepart1"
$type = "filenamepart2.ext"
this problem can be avoid using strrpos instead of strpos in the two lines where i add a comment
/*
* @Name: unlink_wc($dir,$pattern)
* @Version: 1.0
* @Description: A unlink function that support wildcards ( * and ? )
* (based on code taked from php.net manual comments)
* @Author: Pablo Rosciani [ pablo@nkstudios.net ] [ http://pi.nks.com.ar ]
* @Date: 15/10/03
* @param string $dir Directory to search files
* @param string $pattern Pattern to find.
*
*/
function unlink_wc($dir, $pattern){
if ($dh = opendir($dir)) {
//List and put into an array all files
while (false !== ($file = readdir($dh))){
if ($file != "." && $file != "..") {
$files[] = $file;
}
}
closedir($dh);
if (is_array($files)){
//Split file name and extenssion
if(strpos($pattern,".")) {
$baseexp=substr($pattern,0,strpos($pattern,"."));
$typeexp=substr($pattern,strpos($pattern,".")+1,strlen($pattern));
}else{
$baseexp=$pattern;
$typeexp="";
}
//Escape all regexp Characters
$baseexp=preg_quote($baseexp);
$typeexp=preg_quote($typeexp);
// Allow ? and *
$baseexp=str_replace(array("\*","\?"), array(".*","."),
$baseexp);
$typeexp=str_replace(array("\*","\?"), array(".*","."),
$typeexp);
//Search for pattern match
$i=0;
foreach($files as $file) {
$filename=basename($file);
if(strpos($filename,".")) {
$base=substr($filename,0,strrpos($filename,".")); // !!! use strrpos instead of
strpos
$type=substr($filename,strrpos($filename,".")+1,strlen($filename)); // !!! use
strrpos instead of strpos
}else{
$base=$filename;
$type="";
}
if(preg_match("/^".$baseexp."$/i",$base) &&
preg_match("/^".$typeexp."$/i",$type)) {
$matches[$i]=$file;
$i++;
}
}
while(list($idx,$val) = each($matches)){
if (substr($dir,-1) == "/"){
unlink($dir.$val);
}else{
unlink($dir."/".$val);
}
}
}
}
}
----
Manual Page -- http://www.php.net/manual/en/function.unlink.php
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