做的网站第二年续费多钱,企业网站推广哪个公司好,网站开发多久完成,上海人才服务中心官网$foo 2;
echo foo is $foo; // 打印结果: foo is 2
echo foo is $foo; // 打印结果: foo is $foo
echo foo is $foo\n; // 打印结果: foo is 2 (同时换行)
echo foo is $foo\n; // 打印结果: foo is $foo\n$foo 2;
echo foo is $foo; // 打印结果: foo is 2
echo foo is $foo; // 打印结果: foo is $foo
echo foo is $foo\n; // 打印结果: foo is 2 (同时换行)
echo foo is $foo\n; // 打印结果: foo is $foo\n
