how to flip a word?

please_

is there a function that can flip a string that will return the same string again?

for example, take the word race car. if you flip it it will return race car also.

can anybody help me on how to create this sort of function. tq..

trooper

hmmm

if you flip it it will return race car also

Not sure that flip is the right thing your asking for - in your previous post you haven't actually done anything to the string

try and explain what it is you're trying to do cause at the moment i have no idea :-(

Originally posted by please!
is there a function that can flip a string that will return the same string again?

for example, take the word race car. if you flip it it will return race car also.

can anybody help me on how to create this sort of function. tq..

please_

what i meant is how to get the word back. for example, i create a function that asks user to input a string. let say the user typed the word house as the string. then my function will check the string and flip it(checking and returning the output starting from the last character) so it will output esuoh instead of house.

but if the user entered the word mum for example, the function would still output the word mum because either way the word mum is still the same.

so what i want to know is how do i create a function that will only accept a string that if you flip it(i don't know what else to call it) it will output the same string again(e.g: mum)? but if the user entered house it will display an error message. something like that.

so how do i create this function? i hope my explanation is understandable...

epimeth


function palindrome($testString){

 $myString = str_replace('', ' ', $testString);  #Strip spaces
 $len = strlen($myString)-1; #need use strlen only once

 for ($i = 0; $i < floor($len/2); $i++){

#tests if i-th character from the left is the same as i-th from the right
  if ($myString[$i] != $myString[$len-$i]){ 
   echo '<br />String '.$testString.' is not a palindrome';
   return NULL;
  }
 }

 return $testString;
}

xblue

take a look at strrev

you'd need to strip off the spaces first to make your example work, but then you can simply compare the reversed string to the (stripped) original.