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function one($aa){
PHP uses "." as the connector, and the variable aa in your echo one(aa:'ccc'); is not declared, or define ('aa',111); defines a constant
Still reporting an error
"ccc"); print_r (one($array)['aa']); ?> 你试试这样 ，你传的参数有问题不能直接这样传，你要那样子的话只能转换成数组或对象，就像上面一样
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
PHP uses "." as the connector, and the variable aa in your echo one(aa:'ccc'); is not declared, or define ('aa',111); defines a constant
Still reporting an error