吴裕雄--天生自然 PHP开发学习：echo 和 print 语句

<?php
echo "<h2>PHP 很有趣!</h2>";
echo "Hello world!<br>";
echo "我要学 PHP!<br>";
echo "这是一个", "字符串，", "使用了", "多个", "参数。";
?>

<?php
$txt1="学习 PHP";
$txt2="RUNOOB.COM";
$cars=array("Volvo","BMW","Toyota");

echo $txt1;
echo "<br>";
echo "在 $txt2 学习 PHP ";
echo "<br>";
echo "我车的品牌是 {$cars[0]}";
?>

<?php
print "<h2>PHP 很有趣!</h2>";
print "Hello world!<br>";
print "我要学习 PHP!";
?>

<?php
$txt1="学习 PHP";
$txt2="RUNOOB.COM";
$cars=array("Volvo","BMW","Toyota");

print $txt1;
print "<br>";
print "在 $txt2 学习 PHP ";
print "<br>";
print "我车的品牌是 {$cars[0]}";
?>