Detailed explanation of methods and examples of php file operation

$file_path = "test.php"; if($fp=fopen($file_path,"a+")){ $file_info=fstat($fp); echo "
"; print_r($file_info); echo "
"; echo "文件大小为".$file_info['size']; echo "文件上次访问时间".date("Y-m-d H:i:s",$file_info['mtime']); } fclose($fp); //一定要关闭
        

         Copy after login
        
       

//第一种： $con = fread($fp,filesize($file_path)); $con = str_replace("\r\n","
",$con); echo "文件内容是".$con; //第二种：将文件一下全部读取 $con = file_get_contents($file_path); $con = str_replace("\r\n","
",$con); echo "文件内容是".$con; //第三种：一段一段读取 $buffer = 1024; //为了下载的安全，最好使用文件字节读取计数器 $file_count = 0; //feof用于判断文件是否读取到文档尾 while(!feof($fp) && ($file_size-$file_count>0)){ $file_data = fread($fp,$buffer); //统计读了多少个字节 $file_count+$buffer; echo $file_data; }

//1、传统方法写入文件 $file_path = "test.txt"; if(file_exists($file_path)){ $fp = fopen($file_path,"a+"); //打开方式：a+是追加内容。w+是覆盖原来的。 $con = "Hello!\r\n"; fwrite($fp,$con); echo "添加成功！"; }else{ echo "文件不存在"; } fclose($fp); //2、第二种方法写入文件 $file_path= "test.txt"; $con = "北京你好！\r\n"; file_put_contents($file_path,$con,FILE_APPEND); echo "成功";

//可以操作ini文件。将服务器的配置写在ini文件中，再对其进行操作。 dbc.ini host=192.168.0.1 admin=admin password=123456 demo.php  //将ini文件中的数据以数组形式读出，可以对其进行操作。

if(!copy("E:\\test.txt","D:\\1.txt")){ echo "fail"; }else{ echo "success"; }

//$path = "E:\\happy"; //文件夹路径 $path = "E:\\happy\aaa\bbb"; //多级文件夹 if(!is_dir($path)){ if(mkdir($path,0777,true)){ echo "success"; }else{ echo "fail"; } }else{ echo "文件夹已存在"; }

$file_path = "E:\\happy.txt"; $fp = fopen($file_path,"w+"); fwrite($fp,"hello"); fclose($fp);

$path = "E:\\happy\aaa\bbb"; //多级文件夹 if(rmdir($path)){ echo "success"; } //rmdir只能删除空文件夹，文件夹下有文件或目录均不能删除。

$file_path = "E:\\happy.txt"; if(is_file($file_path)){ if(unlink($file_path)){ echo "success"; }else{ echo "fail"; } }else{ echo "文件不存在"; }