php file create cut copy commonly used functions
This article mainly introduces the commonly used functions for creating, cutting and copying PHP files. It has certain reference value. Now I share it with you. Friends in need can refer to it.
<?php header('content-type:text/html;charset=utf-8'); /* * 注 touch 如文件已存在,设定文件的访问和修改时间 如果文件不存在,则会被创建。 * touch(文件名,时间戳); 时间戳默认为当前时间 返回布尔值 * */ // //创建文件 123.txt(如果文件不存在) if(!file_exists('123.txt')){ touch('123.txt'); }; /* * 删除文件unlink(文件名)返回布尔值 * */ //删除文件123.txt(如果文件存在) if(file_exists('123.txt')){ unlink('123.txt'); }; /* * rename重命名文件或剪切文件 * rename(文件名,新文件名) 返回布尔值 * */ if(!file_exists('aaa.txt')){//aaa.text文件不存则创建 touch('aaa.txt'); } rename('aaa.txt','bbb.txt');//把aaa.text 重命名为bbb.text if(!file_exists('test')){//当前目录创建test文件夹 mkdir('test',777); } //DIRECTORY_SEPARATOR 目录分隔符 rename('bbb.txt','test'.DIRECTORY_SEPARATOR.'bbb.txt');//将bbb.text移动到test文件夹*/ /* * copy(路径,目标路径)复制文件 返回布尔值 * 如果目标文件已存在,将会被覆盖。 * * */ copy('test'.DIRECTORY_SEPARATOR.'bbb.txt','bbb.txt'); //将test目录的bbb.txt文件拷贝到当前目录 //拷贝远程图片 要在php.ini 中开启 allow_url_fopen (默认是开启的) copy('http://c.hiphotos.baidu.com/baike/pic/item/91ef76c6a7efce1b27893518a451f3deb58f6546.jpg','./test/a.jpg'); /** * 创建文件方法 * @method createFile * @param string $filename 文件名 * @return bool */ function createFile($filename){ //检测文件是否存在 不存在则创建 if(file_exists($filename)){ return false; } //检测目录是否存在不存在则创建 if(!is_dir(dirname($filename))){ mkdir(dirname($filename)); } //创建文件 touch 创建 或用 file_put_contents 创建 if(touch($filename)){ return true; } /* if(file_put_contents($filename,'')!==false){ return true; }*/ return false; } /** * 删除文件方法 * @method deleteFile * @param string $filename 文件名 * @return bool */ function deleteFile($filename){ //检测文件存在 if(!file_exists($filename) ){ return false; } if(unlink($filename)){ return true; } return false; } /** * 复制文件方法 * @method copyFile * @param string $filename 源文件名 * @param string $dest 目标目录 * @return bool */ function copyFile($filename,$dest){ //检测文件是否存在 if(!file_exists($filename)){ return false; } //检测目标目录是否存在 不存在则创建 if(!is_dir($dest)){ mkdir($dest,0777,true); } //复制后的文件路径 $newFilePath=$dest.DIRECTORY_SEPARATOR.basename($filename); //检测目标路径是否已存在同名文件 if(file_exists($newFilePath)){ return false; } //复制文件 if(copy($filename,$newFilePath)){ return true; }; return false; } /** * 剪切文件方法 * @method cutFile * @param string $filename 源文件名 * @param string $dest 目标目录 * @return bool */ function cutFile($filename,$dest){ //检测文件是否存在 if(!file_exists($filename)){ return false; } //检测目标目录是否存在 不存在则创建 if(!is_dir($dest)){ mkdir($dest,0777,true); } //剪切后的文件路径 $newFilePath=$dest.DIRECTORY_SEPARATOR.basename($filename); //检测目标路径是否已存在同名文件 if(file_exists($newFilePath)){ return false; } //剪切文件 if(rename($filename,$newFilePath)){ return true; }; return false; } /** * 重命名文件方法 * @method renameFile * @param string $oldName 原文件名 * @param string $newName 新文件名 * @return bool */ function renameFile($oldName ,$newName){ //检测文件是否存在 if(!file_exists($oldName)){ return false; } //得到原文件路径 $path=dirname($oldName); //重命名后的文件路径 $newFilePath=$path.DIRECTORY_SEPARATOR.$newName; //检测是否有重名文件 if(file_exists($newFilePath)){ return false; } //重命名(注意是$newName 不是$newFilePath) if(rename($oldName,$newName)){ return true; }; return false; }
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