test\n"; >
3); class test{ public $test="value"; function foo(){ return "numbers"; } } $t=new test; $test="value"; //{和$之间不能有空格 echo "this is {$test}\n"; echo "this is ${test}\n"; // 有效,只有通过花括号语法才能正确解析带引号的键名 echo "the 3td number is: {$nums['2']}\n"; echo "the 3td number is: {$nums[1]}\n"; function foo(){ return "number"; } $names=array('test','numbers','nums'); //输出名字为foo函数返回值的变量的值 echo "${foo()}\n"; //输出名字为test对象foo函数返回值的变量的值 echo "${$t->foo()}\n"; //输出名字为变量varname值的变量的值 echo "${$varname}\n"; //输出test对象中名字没names中第一个元素的属性的值 echo "{$t->{$names[0]}}\n"; >
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