<?php
php info()
?><!doctype html>
<html>
<body>
<?php
echo date('Y-m-d H:i:s');
?>
</body>
</html>숫자와 산술 연산자
<h1>Number & Arithmetic Operator</h1>
<h2>1+1</h2>
<?php
echo 1+1;
?>
<h2>2-1</h2>
<?php
echo 2-1;
?>
<h2>2*2</h2>
<?php
echo 2*2;
?>
<h2>4/2</h2>
<?php
echo 4/2;
?>문자열과 문자열의 처리
<?php
echo "Hello \"w\"ord";
?>
<h2>concatenation operator</h2>
<?php
echo "Hello "."world";
?>
<h2>String length function</h2>
<?php
echo strlen("Hello world");
?>