String constant PHP reverse string function strrev function usage

Haha, it’s fun. I really want to make a function encyclopedia website, but because my energy is limited, I am busy enough just writing WEB development notes and updating one article a day, because my career is not just about writing. This blog, as well as many other websites, need to be maintained. I just write soft articles and publish original works every day. It is really tiring. Well, if I have the opportunity in the future, I will still build the Function Encyclopedia Network. I hope everyone will support it.
Definition and usage
strrev() function reverses a string.
Syntax
strrev(string)
Parameter Description
string Required. Specifies the string to reverse.
Example

Copy codeThe code is as follows:

echo strrev("Hello World!");
?>

Output:
!dlroW olleH
For example:

Copy the code The code is as follows:

$str="Hello world";
$result=strrev($str);
echo $result;
//The output result is: dlrow olleH;
?>

The above introduces the usage of string constants and PHP reverse string function strrev function, including the content of string constants. I hope it will be helpful to friends who are interested in PHP tutorials.