INSERTAR LA FECHA Y HORA EN CODIGO PHP

Para poder introducir un dato del tiempo en nuestra aplicacion Web es necesario esto:
FECHA:

<font size="1">
<script languaje="JavaScript"> 
var mydate=new Date() 
var year=mydate.getYear() 
if (year < 1000) 
year+=1900 
var day=mydate.getDay() 
var month=mydate.getMonth() 
var daym=mydate.getDate() 
if (daym<10) 
daym="0"+daym 
var dayarray=new Array("Domingo,","Lunes,","Martes,","Miércoles,","Jueves,","Viernes,","Sábado,")
var montharray=new Array("Enero","Febrero","Marzo","Abril","Mayo","Junio","Julio","Agosto","Septiembre","Octubre","Noviembre","Diciembre")
document.write("<font color='black' face='Georgia' style='font-size:8pt'>"+dayarray[day]+" "+daym+" de "+montharray[month]+" de "+year+"</font>") 
</script></font>


HORA:

<font face=Arial size=1 color=#FFFFFF><div id="basicclock"></div></font>

<SCRIPT language="JavaScript" type="text/javascript">
function clock() 
{
   var digital = new Date();
   var hours = digital.getHours();
   var minutes = digital.getMinutes();
   var seconds = digital.getSeconds();
   var amOrPm = "AM";
   if (hours > 11) amOrPm = "PM";
   if (hours > 12) hours = hours - 12;
   if (hours == 0) hours = 12;
   if (minutes <= 9) minutes = "0" + minutes;
   if (seconds <= 9) seconds = "0" + seconds;
   dispTime = hours + ":" + minutes + ":" + seconds + " " + amOrPm;

   basicclock.innerHTML = dispTime;
   setTimeout("clock()", 1000);
}
clock();
</SCRIPT>