Connector - dot, itself is also an operator. Its real name should be "character operator". Its function is to concatenate two strings.
echo character . variable . character;
//The dot connects three values into one, and it runs normally.
Example:
1. String + variable + string
echo("");
2. Variable + variable
echo($result.$result);
3. String + variable
echo("a".$result);
The above introduces PHP variables and string connectors, including PHP and string content. I hope it will be helpful to friends who are interested in PHP tutorials.