I never used before curly braces in php 

However i'm updating an existant website...

In database i have information such as in 

```
YOUR NAME {CH_NAME} {URL_NAME}

```

I would like to retrieve the information and show it in appropriate
I want to affect the CH\_NAME Variable to a value & same to URL\_NAME and in final show full infrmation such :

1-Normal : 

```
$beforeStr="YOUR NAME {CH_NAME} {URL_NAME}";
$CH_NAME="John";
$URL_NAME="http://xxxx";

echo $beforeStr ; //would like to show : YOUR NAME John http://xxxx

```

Regards