<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> var i; var mycars = new Array(); mycars[0] = "Saab"; mycars[1] = "V…
<pre> <?php // 二维数组: $cars = array ( array("Volvo",100,96), array("BMW",60,59), array("Toyota",110,100) ); print_r($cars); ?> </pre> <?php $sites = array ( "runoob"=>array ( "菜鸟教程",…
public class Test{ public static void main(String args[]){ StringBuffer sBuffer = new StringBuffer("菜鸟教程官网:"); sBuffer.append("www"); sBuffer.append(".runoob"); sBuffer.append(".com"); System.out.println(sBuffer); }…
<?php $cars=array("Volvo","BMW","Toyota"); echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . "."; ?> <?php $cars=array("Volvo","BMW","…
<?php $x=10; $y=6; echo ($x + $y); // 输出16 echo '<br>'; // 换行 echo ($x - $y); // 输出4 echo '<br>'; // 换行 echo ($x * $y); // 输出60 echo '<br>'; // 换行 echo ($x / $y); // 输出1.6666666666667 echo '<br>'; // 换行 echo ($x % $y); // 输出4 ec…
<?php $txt="Hello world!"; echo $txt; ?> <?php $txt1="Hello world!"; $txt2="What a nice day!"; echo $txt1 . " " . $txt2; ?> <?php echo strlen("Hello world!"); ?> <?php echo strpos(&quo…
<?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…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <p> typeof 操作符返回变量.对象.函数.表达式的类型.</p> <p id="demo"></p> <scri…
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> </head> <body> <script> var carname1="Volvo XC60"; var carname2='Volvo XC60'; var answer1='It\'s…
char ch = 'a'; // Unicode 字符表示形式 char uniChar = '\u039A'; // 字符数组 char[] charArray ={ 'a', 'b', 'c', 'd', 'e' }; public class Test { public static void main(String args[]) { System.out.println(Character.isLetter('c')); System.out.println(Character.is…