Judge file type
var_dump(filetype("./img")); //返回文件类型,目录或文件 var_dump(is_dir("./img/11.png")); //判断给的文件是不是目录 is_file(); //判断给的文件是不是文件
File attributes
var_dump(date("Y-m-d H:i:s",fileatime("./img/11.png"))); //文件上次访问时间 var_dump(date("Y-m-d H:i:s",filemtime("./img/11.png"))); //文件修改时间 echo filesize("./img/11.png"); //文件大小 filectime("") //文件创建时间 file_exists("") //文件是否存在
File path
/代表根 网页里面代表www目录 php里面代表磁盘根 var_dump(file_exists("/wamp/www/1220/wenjian/img/11.png")); //文件是否存在 echo $_SERVER['DOCUMENT_ROOT']; //取服务器根路径 echo basename("/wamp/www/1220/wenjian/img/11.png"); //路径中获取文件名 echo dirname("/wamp/www/1220/wenjian/img/11.png"); //路径中目录名 var_dump(pathinfo("/wamp/www/1220/wenjian/img/11.png")); //返回数组 echo realpath("./img/11.png");//将相对路径转化为绝对路径
Traverse directory
var_dump(glob("./ajax/*")); //返回该目录下所有文件数组
Give me a folder and return the number of all files in the folder
function ShuLiang($url) { $sl = 0; $arr = glob($url); foreach($arr as $v) { if(is_file($v)) { $sl++; } else { $sl += ShuLiang($v."/*"); } } return $sl; } echo ShuLiang("./ajax/*");
The above is the detailed content of Detailed introduction to PHP file operations (1). For more information, please follow other related articles on the PHP Chinese website!

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