PHP programming - chapter 6: Function

function functionName(function_parameter){
      function body here
}


example:
string name="SAM";
function print_name(string name){
      print ("my name is $name.");
}
    to call this function just:
.print_name($name);
you will see a result as;
my name is SAM.

PHP programming - chapter 4: condition

Using Switch Statement

switch($_GET[action]//get input and save to action
{
    case "start":
         print ("select start");
         break;
    case "stop":
         print ("select stop");
         break;
    default:
         print ("NO choice");
         break;
}

PHP programming - chapter 3

valid constant and variable that important:

Add caption

Variable
String:
<?
$var1="sam";
print "my name is $var1";
?>


Boolean:
$var1=true=1;
$var2=false=0='';

Special Variable:

some variable you can not use it as it has its own value:
$GLOBLAS
$_POST
$_GET
$_REQUEST
$_SERVER
$_COOKIE
$_FILES
$_ENV
$_SESSION

Variable Variable

Example:

<?
$var1=""john";
$var2="SAM";
print ("you choose $$_GET["variable"] to be your advisor");
?>

Note: two dollars sign: the input will print and ask you to input value for variable by using $_GET, and after get input to $_GET, it will be displayed to the print line.In this case, you have only two choice to replaced variable is var1 and var2. Otherwise, result will not get any variable to display.