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A corollary to PHP s copy() function, you can use the rename() function to both rename and move files Like copy(), rename()accepts two arguments, a source file and a destination file, and attempts to rename the former to the latter It returns true on success
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Save the file list to an array, and then use the array_multisort() function to sort it by one or more attributes:
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< php // define directory $dir = "/test/a"; // check if it is a directory if (!is_dir($dir)) { die("Argument '$dir' is not a directory!"); } // open directory handle $dh = opendir($dir) or die ("Cannot open directory '$dir'!"); // iterate over files in directory while (($file = readdir($dh)) !== false) { // filter out "" and "" if ($file != "" && $file != "") { // add an entry to the file list for this file $fileList[] = array("name" => $file, "size" => filesize("$dir/$file"), "date" => filemtime("$dir/$file")); } } // close directory closedir($dh); // separate all the elements with the same key // into individual arrays foreach ($fileList as $key=>$value) { $name[$key] = $value['name']; $size[$key] = $value['size']; $date[$key] = $value['date']; } // now sort by one or more keys // sort by name array_multisort($name, $fileList); print_r($fileList);
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// sort by date and then size array_multisort($date, $size, $fileList); print_r($fileList); >
Comments
Here, PHP s directory functions are used to obtain a list of the files in a directory, and place them in a two-dimensional array This array is then processed with PHP s array_multisort() function, which is especially good at sorting symmetrical multidimensional arrays The array_multisort() function accepts a series of input arrays and uses them as sort criteria Sorting begins with the first array; values in that array that evaluate as equal are sorted by the next array, and so on This makes it possible to sort the file list first by size and then date, or by name and then size, or any other permutation thereof Once the file list has been sorted, it can be processed further or displayed in tabular form
620 Searching for Files in a Directory
Problem
You want to find all the files matching a particular name pattern, starting from a toplevel search directory
Solution
Write a recursive function to search the directory and its children for matching file names:
< php // function to recursively search // directories for matching filenames function searchRecursive($dir, $pattern) { // check if argument is a valid directory if (!is_dir($dir)) { die("Argument '$dir' is not a directory!"); } // declare array to hold matches global $matchList;
6: Working with Files and Directories
// open directory handle $dh = opendir($dir) or die ("Cannot open directory '$dir'!"); // iterate over files in directory while (($file = readdir($dh)) !== false) { // filter out "" and "" if ($file != "" && $file != "") { if (is_dir("$dir/$file")) { // if this is a subdirectory // recursively process it searchRecursive("$dir/$file", $pattern); } else { // if this is a file // check for a match // add to $matchList if found if (preg_match("/$pattern/", $file)) { $matchList[] = "$dir/$file"; } } } } // return the final list to the caller return $matchList; } // search for file names containing "ini" $fileList = searchRecursive("c:/windows", "ini"); print_r($fileList); >
Comments
This listing is actually a variant of the technique outlined in the listing in 611: Recursively Processing Directories Here, a recursive function travels through the named directory and its children, using the preg_match() function to check each file name against the name pattern Matching file names and their paths are stored in an array, which is returned to the caller once all subdirectories have been processed An alternative approach here involves using the PEAR File_Find class, available from http://pearphpnet/package/File_Find This class exposes a search() method, which accepts a search pattern and a directory path and performs a recursive search in the named directory for files matching the search pattern The return value of the method is an array containing a list of paths to the matching files
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