Reverse a string with php

php, reverse, string

Solution

As others said, there's `strrev()` to do this.

If you want to build it on your own (for learning?): your problem is that you're starting with your index one too high - a string of length 25 is indexed from 0 to 24, so your loop has to look like this:

for ($i = $len - 1; $i >=0;$i--)
{
   echo $stringExp[$i];
}

Problem

I am trying to find a way to reverse a string, I've seen alternatives but i wanted to to it this way thinking outside the box and not using anyone else's code as an alternative, the code below reverses the string but I keep getting this error: Notice: Undefined offset: 25 in C:\wamp\www\test\index.php on line 15 25 being the length of the string which is being deincremented. ``` //error_reporting(NULL); $string = trim("This is a reversed string"); //find length of string including whitespace $len =strlen($string); //slipt sting into an array $stringExp = str_split($string); //deincriment string and echo out in reverse for ($i = $len; $i >=0;$i--) { echo $stringExp[$i]; } ``` thanks in advance

Original source

Related problems