<?php
function mine($m)
{
    if ($m < 0)
        echo "less than 0";
    if ($ >= 0)
        echo "Not True";
}
mine(0);
?>

<?php 
$x = 75;
$y = 25; 
function addition()
{
    $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];
}
addition();
echo $z;
?>

<?php
    $str = "Hello world. It's a beautiful day.";
    print_r (explode(" ",$str));
?>

<?php
function TV($string)
{
  echo "my favourite TV show is ".$string;
  function b()
  {
    echo " I am here to spoil this code";
  }
}
a("Sherlock");
b();
?>

<?php
function calc($num1, $num2)
{
    $total = $num1 * $num2; 
}
$result = calc(42, 0);
echo $result;    
?>

<?php
function addFunction($num1, $num2)
{
    $sum = $num1 + $num2;
    return $sum;
}
$return_value = addFunction(10, 20);
echo "Returned value from the function : " .$return_value
?>

<?php
function 2myfunc()
{
    echo "Hello World";
}
2myfunc();
?>

<?php
function _func()
{
    echo "Hello World";
}
_func();
?>

<?php
function calc($num1, $num2)
{
    $total = $num1 * $num2;
    return $total; 
}
$result = calc(42, 0);
echo $result;    
?>

<?php
    echo ucwords("i love my country");
?>

<?php
  echo strtr("Hilla Warld","ia","eo");
?>

<?php
    echo lcfirst("welcome to India");
?>

<?php
    echo hex2bin("48656c6c6f20576f726c6421");
?>

<?php
    echo stripos("I love php, I love php too!","PHP");
?>

<?php
function A1($x)
{
  switch($x)
  {
  case 1: 
    //this statement is the same as if($x == 1)
    echo 'Case 1 was executed.';
    break;
  case 2: 
    //this statement is the same as if($x == 2)
    echo 'Case 2 was executed.';
    break;
  case 3: 
    //this statement is the same as if($x == 3)
    echo 'Case 3 was executed.';
    break;
  case 4: 
    //this statement is the same as if($x == 4)
    echo 'Case 4 was executed.';
    break;
  default: 
    //this statement is the same as if $x does not equal the other conditions
    echo 'Default was executed.';
    break;
  }
}
A1(9);
?>

<?php
function sum($num1, $num2)
{
    $total = $num1 + $num2;
    echo "chr($total)"; 
}
$var1 = "sum";
$var1(5, 44);    
?>

<?php
function sum($num1, $num2)
{
    $total = $num1 + $num2;
    echo "cos($total)"; 
}
sum(5,-5);    
?>

<?php
    function uppercase($string)
    {
        echo ucwords($string);
    }
    $wow = "uppercase";
    $wow("Time to live king size");
?>

<?php
function TV($string)
{
    echo "my favourite TV show is ".$string;
    function b()
    {
       echo " I am here to spoil this code";
    }
}
b();
?>

span>
function one()
{
    echo " this works";
    function two()
    {
        echo "this too works";
    }
}
one();
two();
?>