function view($id = null) {
开发者_StackOverflow $this->Post->id = $id;
What is the purpose of ($id = null)?
It uses null as the default value for the function argument $id. See Default argument values for the details.
view($id = null) what does it mean?
function view($id = null) {
开发者_StackOverflow$this->Post->id = $id;
What is the purpose of ($id = null)?It uses null as the default value for the function argument $id. See Default argumen
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![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......
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