save_data.php

<?php

	error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

	$dbc = mysqli_connect("localhost", "root", "");
	if(!$dbc) {
		die("Server connection failed.")
		exit();
	}

	$dbs = mysqli_select_db($dbc, "Locator");
	if(!$dbs) {
		die("Database connection failed.");
		exit();
	}
	date_default_timezone_set("Asia/Kolkata");
	$datetime = date('Y/m/d H:i:s');

	if($_GET["userid"]) {
		$contact = $_GET["userid"];
	}

	$curr_long = '';
	$curr_lat = '';

	if($_GET['start']==1) {
		// Create a new file using the current timestamp
		$name = date("YmdHis");
		$path = "user_info/".$contact."/".$name.".txt";
		echo $path;
        
        $data = "0 , 0 : " . $datetime;
        file_put_contents($fpath, $data.PHP_EOL, FILE_APPEND);
        
        $file = "user_info/".$contact."/".$contact.".txt";
        $handle = fopen($file, "r");
        $contacts = array();
        if($handle) {
            while(($line = fgets($handle)) !== false) {
                
            }
            fclose($handle);
        }
        else {
            echo "Can't open file.";
        }
        
	}
	else {
		// Get file path 
		if($_GET["path"]) {
			$file_path = $_GET["path"];
		}

		if($_GET["long"]) {
			$curr_long = $_GET["long"];
		}

		if($_GET["lat"]) {
			$curr_lat = $_GET["lat"];
		}
		$data = $curr_long . ", " . $curr_lat . " :	" . $datetime;

		// Write to the file
		$ret = file_put_contents($file_path, $data.PHP_EOL, FILE_APPEND);
        
		if($ret) {
			echo 1;
		}
        else {
            echo 2;
        }
        
        $query = "UPDATE location SET longitude='$curr_long', latitude='$curr_lat' WHERE userid='$contact'";
        
        $result = mysqli_query($dbc, $query) or trigger_error("Query MySQL Error: " .mysqli_error($dbc));
        if($result) {
            echo 3;
        }
        else {
            echo 4;
        }
	}	
    
    mysqli_close($dbc);
?>