Home > Article > Backend Development > How to use unlink to delete a folder in php
How to use unlink to delete a folder in php: 1. Create a php sample file; 2. Pass "if ($handle = opendir( "$dirName" ) ) {while (false !== ($ item = readdir($handle))){if($item...}" statement can be used to delete the folder.
The operating environment of this article: windows10 System, php 7, thinkpad t480 computer.
Deleting files in PHP is actually a very simple thing, because PHP has prepared appropriate functions for us, the unlink and rmdir functions. By using these two The function can also complete recursive deletion operations.
Let’s take a look at the specific implementation code!
The implementation code is as follows:
class shanchu { //循环目录下的所有文件 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/$item” ); } else {//开源代码phpfensi.com if( unlink( “$dirName/$item” ) )echo “成功删除文件: $dirName/$item<br />n”; } } } closedir( $handle ); } } }
Assume that a name needs to be deleted Call all files in the "upload" directory, but there is no need to delete the directory folder. You can do it with the following code:
<?php delFileUnderDir( ‘upload');?>
php deletes all directories, the code is as follows:
function deltree($pathdir) { echo $pathdir;//调试时用的 if(is_empty_dir($pathdir))//如果是空的 { rmdir($pathdir);//直接删除 } else {//否则读这个目录,除了.和..外 $d=dir($pathdir); while($a=$d->read()) { if(is_file($pathdir.'/'.$a) && ($a!='.') && ($a!='..')){unlink($pathdir.'/'.$a);} //如果是文件就直接删除 if(is_dir($pathdir.'/'.$a) && ($a!='.') && ($a!='..')) {//如果是目录 if(!is_empty_dir($pathdir.'/'.$a))//是否为空 {//如果不是,调用自身,不过是原来的路径+他下级的目录名 deltree($pathdir.'/'.$a); } if(is_empty_dir($pathdir.'/'.$a)) {//如果是空就直接删除 rmdir($pathdir.'/'.$a); } } } $d->close(); echo "必须先删除目录下的所有文件";//我调试时用的 } } function is_empty_dir($pathdir) { //判断目录是否为空 $d=opendir($pathdir); $i=0; while($a=readdir($d)) { $i++; } closedir($d); if($i>2){return false;} else return true; }
PHP deletes the directory and All files in the directory, the code is as follows:
<?php //循环删除目录和文件函数 function delDirAndFile( $dirName ) { if ( $handle = opendir( “$dirName” ) ) { while ( false !== ( $item = readdir( $handle ) ) ) { if ( $item != “.” && $item != “..” ) { if ( is_dir( “$dirName/$item” ) ) { delDirAndFile( “$dirName/$item” ); } else { if( unlink( “$dirName/$item” ) )echo “成功删除文件: $dirName/$item<br />n”; } } } closedir( $handle ); if( rmdir( $dirName ) )echo “成功删除目录: $dirName<br />n”; } } //假设需要删除一个名叫”upload”的同级目录即此目录下的所有文件,你可以通过以下代码完成: delDirAndFile( ‘upload'); ?>
Recommended learning: php training
The above is the detailed content of How to use unlink to delete a folder in php. For more information, please follow other related articles on the PHP Chinese website!