<?php
    function a()
    {
        function b()
        {
            echo 'I am b';
        }
        echo 'I am a';
    }
    b();
    a();
?>

<?php
$str = "Hello World"
echo wordwrap($str,5,"n");    
?>

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

<?php
$op2 = "blabla";
function foo($op1)
{
        echo $op1;
        echo $op2;
}
foo("hello");
?>

<?php
function a()
{
    function b()
    {
        echo 'I am b';
    }
    echo 'I am a';
}
a();
a();
?>

<?php
function a()  
{
    function b()
    {
       echo 'I am b';
    }
    echo 'I am a';
}
b();
a();
?>

<?php
$op2 = "blabla";
function foo($op1)
    {
        echo $op1;
        echo $op2;
    }
foo("hello");
?>

<?php
function string()
{
    echo strstr("Hello world!", 111);
}
string();
?>

<?php
function foo($msg)
{
    echo "$msg";
}
$var1 = "foo";
$var1("will this work");
?>

usleep(1000000);

$array = array(0, 1, 2);
$array = array_pad($array, -6, ‘NEW’);

<?php
function calc($price, $tax)	
{
    $total = $price + $tax;
}
$pricetag = 15;
$taxtag = 3;
calc($pricetag, $taxtag);	
?>

<?php
function calc($price, $tax="")
{
    $total = $price + ($price * $tax);
    echo "$total"; 
}
calc(42);	
?>