flip flop extensions

[fordgt72]

Hi,

 

How could I flip flop the below extensions?

$s1 = '13.61sd';

$s2 = '25.21ed';

 

Every so often I'll need to flip the extensions like so..

$s1 = '13.61ed';

$s2 = '25.21sd';

 

I thought I could do an "if and" statement and then a str_replace but I'm missing something or it's not the proper solution.

 

if ($s1==('/^[0-9]{2}.[0-9]{2}sd/') && $s2==('/^[0-9]{2}.[0-9]{2}ed/'))

{

$s1A=str_replace('sd','ed',$s1);

$s2A=str_replace('ed',sd',$s2);

}

 

Thanks for any help I appreciate it.

[ozestretch]

Is that code not working?

 

Idea is great, looks ok. What is it not doing?

[fordgt72]

Thanks for the reply.

If I add an echo $s1A at the end I get no output.

 

<?

$s1 = '13.61sd';

$s2 = '25.21ed';

if ($s1==('/^[0-9]{2}.[0-9]{2}sd/') && $s2==('/^[0-9]{2}.[0-9]{2}ed/'))

{

$s1A=str_replace('sd','ed',$s1);

$s2A=str_replace('ed',sd',$s2);

}

echo $s1A;

?>

 

I think I'm missing something in the if statement.

[ozestretch]

I am not good with expressions, but try this

<?
$s1 = '13.61sd';
$s2 = '25.21ed';
if (preg_match('/^[0-9]{2}.[0-9]{2}sd/',$s1) && preg_match('/^[0-9]{2}.[0-9]{2}ed/',$s2))
{
$s1A=str_replace('sd','ed',$s1);
$s2A=str_replace('ed',sd',$s2);
}
echo $s1A;
?>

 

if not, try asking in http://www.phpfreaks.com/forums/index.php/board,43.0.html

[fordgt72]

That didn't work either.

Thanks for your help. I'll give the link you supplied a try.