PHP常用函数收集

1、出生日期转换成年龄

private function changeBirthdayToAge($birthday)
{
	$interval = date(time() - strtotime($birthday));
	return intval($interval / (365 * 60 * 60 * 24 )) + 1;
}

2、object转换成array

function objectToArray($d) {
	if (is_object($d)) {
		// Gets the properties of the given object
		// with get_object_vars function
		$d = get_object_vars($d);
	}

	if (is_array($d)) {
		/*
		* Return array converted to object
		* Using __FUNCTION__ (Magic constant)
		* for recursive call
		*/
		return array_map(__FUNCTION__, $d);
	}
	else {
		// Return array
		return $d;
	}
}

3、array转换成object

function arrayToObject($d) {
	if (is_array($d)) {
		/*
		* Return array converted to object
		* Using __FUNCTION__ (Magic constant)
		* for recursive call
		*/
		return (object) array_map(__FUNCTION__, $d);
	}
	else {
		// Return object
		return $d;
	}
}

4、日期格式化

function microtime_format() {
    $time = number_format(microtime(true),8,'.','');
	return explode(".", $time);
}

5、HTML格式编码转换

function htmlspecialcharsx($str) {
	$s = htmlspecialchars($str);
	return str_replace('&#', '&#', $s);
}

6、当前日期

function datetime() {
   return  date("Y-m-d H:i:s");
}

7、多维数组排序

function multi_array_sort($multi_array, $sort_key, $sort=SORT_ASC){ 
	if(is_array($multi_array)){ 
		foreach ($multi_array as $row_array){ 
			if(is_array($row_array)){ 
				$key_array[] = $row_array[$sort_key]; 
			} else { 
				return false; 
			} 
		} 
	} else { 
		return false; 
	} 
	array_multisort($key_array, $sort, $multi_array); 
	return $multi_array; 
} 

8、创建目录

        /**
	 +----------------------------------------------------------
	 * 创建目录
	 +----------------------------------------------------------
	 * @access private
	 * @param  dir 目录地址
	 * @return boolean
	 +----------------------------------------------------------
	 */
	public function createDir($dir)
	{
		// 創建目錄
		if (!is_dir($dir)) {
			return mkdir($dir, 0755, true);
		}
		return TRUE;
	}

9、删除目录

/**
     +----------------------------------------------------------
     * 删除指定目录下的所有文件及目录
     +----------------------------------------------------------
	 * @access public
	 * @param  dirName 目录路径
	 * @return boolean
     +----------------------------------------------------------
     */
	public function removeDir($dirName)
	{
		$handle = opendir("$dirName");
		if (!$handle) return FALSE;
		while (false !== ($item = readdir($handle))) {
		   if ($item != "." && $item != ".."){
			   if(is_dir("$dirName/$item")){
			   		$this->removeDir("$dirName/$item");
			   }else{
			   		unlink("$dirName/$item");
			   }
		   }
	   }
	   closedir($handle);
	   return rmdir($dirName);
	}

10、生成随机文件名

/**
	 +----------------------------------------------------------
	 * 創建文件名
	 +----------------------------------------------------------
	 * @access private
	 * @return filename
	 +----------------------------------------------------------
	 */
	public function generalFileName()
	{
		$now = microtime_format();
		return date('YmdHis', $now[0]) . $now[1];
	}

11、验证文件类型

/**
	 +----------------------------------------------------------
	 * 驗證文件類型
	 +----------------------------------------------------------
	 * @access private
	 * @param  fileType string 文件後綴
	 * @return boolean
	 +----------------------------------------------------------
	 */
	public function checkFileType($fileType, $allowType)
	{
		return in_array(strtolower($fileType), $allowType);
	}

12、解压缩压缩包

/**
	 +----------------------------------------------------------
	 * 解压缩zip包
	 +----------------------------------------------------------
	 * @access public
	 * @return boolean
	 +----------------------------------------------------------
	 */
	private function unzip($path)
	{
		$zip = new ZipArchive();
		if ($zip->open($path) === FALSE)  return FALSE;
		$zip->extractTo(substr($path, 0, -4));
	    $zip->close();
	    return TRUE;
	}

/**
	 +----------------------------------------------------------
	 * 解压缩zip包 linux 命令
	 +----------------------------------------------------------
	 * @access public
	 * @return boolean
	 +----------------------------------------------------------
	 */
	private function unzip_linux($path)
	{
		$target = substr($path, 0, strlen($path)-4);
		exec("unzip -o $path -d $target");
		return TRUE;
	}

13、创建压缩包

/**
     +----------------------------------------------------------
     * 生成压缩包
     +----------------------------------------------------------
	 * @access public
	 * @return boolean
     +----------------------------------------------------------
     */
	private function createZip($dirName)
	{
		$zip = new ZipArchive();
		$filename = $dirName . ".zip";
		if(file_exists($filename)) unlink($filename);
		if (!$zip->open($filename, ZIPARCHIVE::CREATE))	
			return "create zip file failed";
		$fileArr = $this->recursiveFiles($dirName);
		foreach ($fileArr as $key => $value) {
			$zip->addFile($value['path'], $value['parentFolder'] . $value['fileName']);
		}
		$zip->close();  
		return TRUE;
	}
	
	/**
     +----------------------------------------------------------
     * 通过linux命令生成压缩包
     +----------------------------------------------------------
	 * @access public
	 * @return boolean
     +----------------------------------------------------------
     */
	private function createZip_linux($fileName, $directory, $dirName)
	{
		$zipFile = $fileName . ".zip";
		$currPath = getcwd(); 
		if (!chdir($dirName)) return FALSE;	// 跳转到上传目录
		exec("zip -q -m -r $zipFile *");
		if (!chdir($currPath)) return FALSE;  // 返回项目根目录
		
		// 将生成的zip文件放到上一层目录
		$source = $dirName . '/' . $zipFile;
		$target = C("PAGE_ROOT") . C('ACTIVE_VOLUME') . $directory . $zipFile;
		exec("mv -f $source $target");
		return TRUE;
	}

14、复制文件夹

/**
     +----------------------------------------------------------
     * 复制文件夹
     +----------------------------------------------------------
	 * @access public
	 * @param originalPath 原始文件路径
	 * @param destPath 目标文件路径
	 * @return boolean
     +----------------------------------------------------------
     */
	public function copyFolder($originalPath, $destPath)
	{
		if (is_dir($originalPath)) {
			$fileArray = array();
			D("File")->createDir($destPath); 
			$handle = opendir($originalPath);
			while (false !== ($file = readdir($handle)))	// 循环读取目录中的文件名并赋值给$file
			{
				if ($file != "." && $file != "..")	// 排除当前路径和前一路径
				{
					if (is_dir($originalPath . "/" . $file)) {
						$this->copyFolder($originalPath . "/" . $file, $destPath . "/" . $file); // 获取子目录下的文件
					} else {
						copy($originalPath . "/" . $file, $destPath . "/" . $file);
					}
				}
			}
		} else {
			copy( $originalPath, $destPath );
		}
	}

15、验证EMAIL格式

public function validEmail($email) 
	{
		if ($email) {
		    if(filter_var($email, FILTER_VALIDATE_EMAIL)){
		       return TRUE;
		    }else{
		       return FALSE;
			}
	    } else {
			return FALSE;
		}
	}