PHP file operation class (create file and write) generate log_PHP tutorial

<?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

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