Something

function get_transaction_of_day(){	#if file exist -> open -> get number for var -> var++ -> write back -> close file	#if file !exist -> create -> set var = 0 -> write back -> close file	$filename = "counter.txt"; 	if(is_file($filename))	{		$fd = fopen($filename, "r"); 		if($fd)		{			$contents = fread ($fd, filesize($filename)); 			fclose ($fd); 					$contents++; 					$fp = fopen ($filename, "w"); 			if($fp)			{				fwrite ($fp,$contents); 				fclose ($fp); 			}			return $contents;		}	}else{		$contents = 0; 		$fp = fopen ($filename, "x"); 		if($fp)		{			fwrite ($fp,$contents); 			fclose ($fp); 		}		return $contents;	}}