Recursion problem in PHP5

[moby04]

I've got a problem with recursion function in PHP. The code I've written does nothing and ofcourse I know how to fix it but I have found a certain problem. The code is:

 

<?php 
function reverse($string)
{
    if(strlen($string)>0)
        reverse($string); //should be: reverse(substr($string, 1));
    echo substr($string, 0, 1);
    return;
}
reverse("Hello");
?>

 

When I try to run it from localhost (I use Apache2 na Ubuntu 7.04 z PHP 5.2.1, script run at Firefox 2.0.0.5) my browser displays file download form insted of HTML result. At the begining I thought it is the problem with the neverending recursion but when I tried with the following code everything was fine (it breaked at value of 18271):

 

<?php 
function rekurencja()
{
    static $i = 1;
    echo $i++."<br />\n";
    rekurencja();
    return;
}    
rekurencja("Hello");
?>

 

I asked already at polish forum but I had no answer (rekurencja is just a recursion ). Can you tell me what is the problem?

[DeepakJ]

IT is because PHP isn't installed properly on your computer. I used to have the same problem. Reinstall carefully and it should be fixed.

[roopurt18]

The above poster is correct, I just wanted to ask what was wrong with the built in string-reversal function?

 

http://www.php.net/manual/en/function.strrev.php

[moby04]

I have my php installed by synaptic along with Apache... Should I remove it and install from the sources?

[moby04]

The above poster is correct, I just wanted to ask what was wrong with the built in string-reversal function?

 

http://www.php.net/manual/en/function.strrev.php

 

Nothing's wrong ofcourse. I just wanted to try it this way and went into a problem. That's all.