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Create a hard link
(PHP 4, PHP 5)
Related Examples ( Source code ) » link Examples ( Source code ) » React to Form action Examples ( Source code ) » Creating an HTML Form That Accepts Mail-Related Information Examples ( Source code ) » Send email with CC and BCC Examples ( Source code ) » Build query string based on form input Examples ( Source code ) » Responding to Checkboxes Examples ( Source code ) » Form select input Examples ( Source code ) » An HTML Form Including a SELECT Element Examples ( Source code ) » A Simple HTML Form Examples ( Source code ) » Form value validation Examples ( Source code ) » Form Data Validation With Error Count Examples ( Source code ) » Saving State with a Hidden Field Examples ( Source code ) » Call MySelf PHP Examples ( Source code ) » A PHP Number Guessing Script Examples ( Source code ) » Get Text Field value Examples ( Source code ) » Form Numeric value Code Examples / Notes » linkkop
Note that link() will not work if the target already exists, at least as of php 4.1.2.
stephane
Make link recursively : <?php function makeRecusLink($orig, $dest) { if (is_dir($orig)) { if (substr($orig, -1) != '/') { $orig .= '/'; } $handle = opendir($orig); while (false !== ($file = readdir($handle))) { if ($file != '.' && $file != '..') { $path = $orig.$file; if (is_file($path)) { @link($path, $dest.'/'.$file); } else if (is_dir($path)) { @mkdir($dest.'/'.$file, 0755); makeRecusLink($path, $dest.'/'.$file); } } } } closedir($handle); } ?> mmap
I think kop is confused regarding the semantics of link's argument order. The user's comment states that target should not already exist, suggesting that it is the target that is being created. As with the UNIX hardlink, ln(1), the target is the existing file. I think kop meant to say php's link() will return an error if the second parameter, the link being created, already exists. Also, as with the UNIX system call link will fail if the link being created exists on a different filesystem. guilherme garnier
I noticed that, differently from Unix ln command, the second parameter can´t be a directory name, i.e., if you want to create a link with the same filename of the target file (obviously on different directories), you must specify the filename on the link parameter. Example: Unix ln command: ln /dir1/file /dir2/ // ok, creates /dir2/file link PHP link function: link ("/dir1/file", "/dir2/"); // wrong, gives a "File exists" warning link ("/dir1/file", "/dir2/file"); // ok, creates /dir2/file link jasper bekkers
For a backup utility I needed link-like functionality on a windows system. As it isn't availible on windows, i tried to do it myself with the help of some tools. All you need is junction.exe from sysinternals in your %PATH%. <?php if(!function_exists('link')){ // Assume a windows system function link($target, $link){ if(is_dir($target)){ // junctions link to directories in windows exec("junction $link $target", $lines, $val); return 0 == $val; }elseif(is_file($target)){ // Hardlinks link to files in windows exec("fsutil hardlink create $link $target", $lines, $val); return 0 == $val; } return false; } } ?> http://www.sysinternals.com/Utilities/Junction.html root
Be aware that the filesystem of the target and the link must be the same, otherwise the link will fail! (Linking files over different filesystems doesn't work under Unix).
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Change Language
basename chgrp chmod chown clearstatcache copy delete dirname disk_free_space disk_total_space diskfreespace fclose feof fflush fgetc fgetcsv fgets fgetss file_exists file_get_contents file_put_contents file fileatime filectime filegroup fileinode filemtime fileowner fileperms filesize filetype flock fnmatch fopen fpassthru fputcsv fputs fread fscanf fseek fstat ftell ftruncate fwrite glob is_dir is_executable is_file is_link is_readable is_uploaded_file is_writable is_writeable lchgrp lchown link linkinfo lstat mkdir move_uploaded_file parse_ini_file pathinfo pclose popen readfile readlink realpath rename rewind rmdir set_file_buffer stat symlink tempnam tmpfile touch umask unlink |
