logging - How to put custom messages into a file in PHP -

i sending messages server through php file. need have file record of passed time stamp through php later references , bug fixes. used following code nothing changed in file. issue if use wamp server in local machine? have attached sample code here!any guide on correct way achieve little new php.

    <?php     header('access-control-allow-origin: *');     header('access-control-allow-headers: origin, x-requested-with, content-type, accept');     header('access-control-allow-methods: post, get, options, delete');     header('access-control-max-age: 3600');     //include files--------------------------------------------------------------------------------------------      include_once("config.php");        //functions set class----------------------------------------------------------------------------------------     class converter     {         //log file------------------------------         const general_log_dir = '/log.txt';          function logmsg($msg,$num)         {             $date = date('d.m.y h:i:s');             $log = $msg."   |  date:  ".$date."\n";             error_log($msg."   |  message:  ".$date.$num, 3, self::general_log_dir);         }        }      $message2="some text";     $num=11;       $obj=new converter;         set_time_limit(0);         /* create tcp/ip socket. */         $socket = socket_create(af_inet, sock_stream, sol_tcp);          if($socket)         echo "<br>successfully socket created<br>";         else         echo "<br>cannot create socket<br>";          $connect=socket_connect($socket,$svraddress,$port);         if($connect)         echo "<br>successfully connected server<br>";         else         echo "<br>cannot connect server<br>";            $write=socket_write($socket,$message2);         $obj->logmsg($message2,$num);         echo '<h3 style="color:red">'.$message2."</h3></br>";         echo ' send on '.date("y:m:d:h:i:s").'</br>';       echo "closing socket...";     socket_close($socket);     echo "finished.<br /><br />";     echo "{\"success\": true, \"message\": \"ok\"}";      ?> 

did these using following methods got work done still don't know happened in previous case.still new php hope has same issue

method1

$file = fopen("text.log","a");     echo fwrite($file,$msg."\n");     fclose($file); 

method2

// open file existing content $current = file_get_contents($file); $current .= $msg; $current.="\n"; */ // write contents file file_put_contents('text.log', $current . php_eol, file_append);