PHP_零基礎學php_3PHP函數、傳參函數、默認參數、函數返回值

<?php 
function say_hello() //無參數
{
    $name="tang";
    echo "hello,".$name;
    echo "<br />";
    echo "<hr />";
}
say_hello();//函數調用

function say_helloS($some_name)//有參數
{
    echo "hello,".$some_name;
    echo "<br/>";
    echo "<hr />";
}
say_helloS("tang");
say_helloS("xue");
say_helloS("long");

function say_helloT($some_name="tangwei")//帶有默認參數的函數
{
    echo $some_name." is god girl!";
}
say_helloT();
?>