PHPファイル操作クラス（ファイル作成と書き込み）ログ生成

<?php/** * 文件操作(生成日志)支持多条插入 * (如果插入多条语句并换行  用&#39;,&#39;逗号分开) * */class log {	public $path 	= &#39;./info.txt&#39;;		//默认值文件	public $mode 	= &#39;a&#39;;				//默认追加写	public $content = &#39;默认值:空&#39;;			//默认内容是 空			public function addlog($path = null, $mode = null, $content = null) {				//判断写入的文件名是否为空		if (! empty ( $path )) {			$this->path = $path;		}				//判断操作方式 a追加写		if (! empty ( $mode )) {			$this->mode = $mode;		}				//判断写入的内容		if (! empty ( $content )) {			$this->content = $content;		}				$handle = fopen ( $this->path, $this->mode );				//拆分换行		$string = explode ( ",", $this->content );		foreach ( $string as $v ) {			fwrite ( $handle, $v . "\r\n" );		}		fclose ( $handle );	}}//使用$log = new log ();// $log->addlog ();	//不传值 走默认值// $log->addlog ( "./log", "a", " 内容1:$content1  内容2: $content2  内容3: $content3 " ); //传多个内容// $log->addlog ( "./log", "a", "123,123,123" ); //一次插入并换行