Php deletes the file program code. To delete files in php, we need to use the unlink () file deletion function provided by php. next I will introduce you in detail how to delete files using unlink, if you have any need, refer to this tutorial to delete files in php. we need to use the unlink () file deletion function provided by php, next, I will introduce you in detail how to use unlink to delete files. if you need it, refer to this tutorial.
Unlink (filename, context)
Example
| The code is as follows: |
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If (unlink ($ file_delete )){
Echo "The file was deleted successfully.", "n ";
} Else {
Echo "The specified file cocould not be deleted. Please try again.", "n ";
} |
Determine whether a file exists
| The code is as follows: |
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$ Myfile = "./test1.txt ";
If (file_exists ($ myfile )){
$ Result = unlink ($ myfile );
Echo $ result;
}
?> |
Batch delete files
| The code is as follows: |
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Function delFileUnderDir ($ dirName = "../Smarty/templates/templates_c ")
{
If ($ handle = opendir ("$ dirName ")){
While (false! ==( $ Item = readdir ($ handle ))){
If ($ item! = "." & $ Item! = ".."){
If (is_dir ("$ dirName/$ item ")){
DelFileUnderDir ("$ dirName/$ item ");
} Else {
If (unlink ("$ dirName/$ item") echo "successfully deleted the file: $ dirName/$ item
N ";
}
}
}
Closedir ($ handle );
}
} DelDirAndFile ('www. bKjia. c0m '); |
Example
Delete files in the directory and specify the files not deleted
| The code is as follows: |
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Header ("content-Type: text/html; charset = utf-8 ");
// Start configuration
$ Path = "."; // The directory to be deleted in some settings. Add path to the current directory, for example, delete path;
$ Guolv = "del. php, install. php, path"; // you can specify the names of files or folders to be filtered.
// The configuration is complete.
If ($ _ GET ['action'] = "del "){
$ File = array_values_recursive (recurdir ($ path, $ guolv ));
Foreach ($ file as $ k => $ v ){
Remove_directory ($ v );
}
} Else {
Echo "your configuration is as follows:
The directory to be deleted is:
";
If ($ path = ".") echo "current directory"; else echo $ path;
Echo"
The files or folders you want to filter include: ". $ guolv ."
If you confirm filtering, click here to delete the corresponding directory and all files under the Directory. if the configuration is incorrect, go to the file to modify it.
";
}
// Delete directories and files
Function remove_directory ($ dir ){
Foreach (glob ($ dir) as $ fn ){
Echo "removing $ fn
N ";
If (! Is_writable ($ fn) @ chmod ($ fn, 0777 );
If (is_dir ($ fn) {@ rmdir ($ fn) ;}else {@ unlink ($ fn );}
}
}
// Scan the Directory
Function recurdir ($ pathname, $ guolv = 'Del. php ')
{
$ Result = array (); $ temp = array ();
// Check whether the directory is valid and readable
If (! Is_dir ($ pathname) |! Is_readable ($ pathname ))
Return null;
// Obtain all the folders in the directory
$ Allfiles = scandir ($ pathname );
Foreach ($ allfiles as $ key => $ filename)
{
// If it is "." or "...", it is skipped.
If (in_array ($ filename, array ('.', '..') continue;
If (count ($ guolv)> 0) {$ lv = explode (",", $ guolv); if (in_array ($ filename, $ lv) continue ;}
// Obtain the complete file name
$ Fullname = $ pathname. "/". $ filename;
// If the file is a directory, recursively call recurdir
$ Temp [] = $ fullname;
If (is_dir ($ fullname )){
$ Nowpath = explode ("/", $ fullname );
If (count ($ guolv)> 0) {$ lv = explode (",", $ guolv); if (in_array ($ nowpath [count ($ nowpath)-1], $ lv) continue ;}
$ Result [$ filename] = recurdir ($ fullname );}
}
// Add the content in the temporary array to the result array to ensure that the directory is in the front and the file is in the back
Foreach ($ temp as $ f ){
$ Result [] = $ f;
}
Return $ result;
}
// Obtain all objects
Function array_values_recursive ($ ary)
{
$ Lst = array ();
Foreach (array_keys ($ ary) as $ k ){
$ V = $ ary [$ k];
If (is_array ($ v) {$ lst = array_merge ($ lst, array_values_recursive ($ v);} else {$ lst [] = $ v ;}
}
Return $ lst;
}
?>
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Upload () file deletion function. next I will introduce you in detail how to use unlink to delete files. if you need it, please refer to this tutorial...
