How to delete files using php unlink

php unlink method to delete files: first create a PHP sample file; then use the unlink function to delete the file, the statement is "if (unlink($file_delete)) {...}"; finally execute the example Just file.

Recommended: "PHP Video Tutorial"

Use php unlink to delete files

php unlink() function introduction

unlink - delete file

Syntax:

bool unlink ( string $filename [, resource $context ] )

Delete filename. Similar to Unix C's unlink() function. An E_WARNING level error is generated when an error occurs.

Parameters:

filename: The path of the file.

context: Added support for context in PHP 5.0.0. See Streams for a description of context.

Return value:

Returns TRUE on success, or FALSE on failure.

php unlink() example:

php uses unlink() to delete a file

<?php
   $file_delete = "home/meeta/my.php";
   
   if (unlink($file_delete)) {
      echo "The file was deleted successfully.", "\n";
   } else {
      echo "The specified file could not be deleted. Please try again.", "\n";
   }
?>

php uses recursive method Delete all files in directory:

<?php
function delDir($directory){//自定义函数递归的函数整个目录
    if(file_exists($directory)){//判断目录是否存在，如果不存在rmdir()函数会出错
        if($dir_handle=@opendir($directory)){//打开目录返回目录资源，并判断是否成功
            while($filename=readdir($dir_handle)){//遍历目录，读出目录中的文件或文件夹
                if($filename!=&#39;.&#39; && $filename!=&#39;..&#39;){//一定要排除两个特殊的目录
                    $subFile=$directory."/".$filename;//将目录下的文件与当前目录相连
                    if(is_dir($subFile)){//如果是目录条件则成了
                        delDir($subFile);//递归调用自己删除子目录
                    }
                    /* http://www.manongjc.com/article/1351.html */
                    if(is_file($subFile)){//如果是文件条件则成立
                        unlink($subFile);//直接删除这个文件
                    }
                }
            }
            closedir($dir_handle);//关闭目录资源
            rmdir($directory);//删除空目录
        }
    }
}
delDir("mydir");//调用delDir函数
?>

The above is the detailed content of How to delete files using php unlink. For more information, please follow other related articles on the PHP Chinese website!