Php incrementing /w decimal places.

[whelpton]

Hey, just wondering what would be the best way of adding .1 to a string.

 

For example:

 

$newversion = $currentversion + '0.0.1';

 

$newversion is taken from a db, lets say for this example it is 0.2.1

 

This code simply outputs 0.2

 

Any ideas?

 

Thanks =)

[MasterACE14]

$newversion = $currentversion . '0.0.1';

[whelpton]

Thank you, thats nearly got it. However now Im getting 0.2.101 or 0.2.10.1 if I use the original 0.0.1.

 

Im just looking to increase the last decimal position by one.

 

Thanks

[PFMaBiSmAd]

<?php

function version_add($current,$add){
$current = explode('.',$current);
$add = explode('.',$add);
foreach($current as $key=>$value){
	$current[$key] += $add[$key];
}
return implode('.',$current);
}

$currentversion = '0.2.1'; 
$newversion = version_add($currentversion,'0.0.1');

echo $newversion;

[MasterACE14]

EDIT: PFMaBiSmAd beat me to it 

 

$currentversion = '0.2.1';

$v = explode('.', $currentversion);
if($v[2] < 9)
$v[2]++;
elseif($v[1] < 9) {
$v[1]++;
$v[2] = 0;
} elseif($v[0] < 9) {
$v[0]++;
$v[1] = 0;
if($v[1] == 0)
   $v[2] = 0;
}

$newversion = implode('.',$v);

echo $newversion;

[whelpton]

Absoloutely fantastic. Thank you both!

[MasterACE14]

Just note if you have say...

$currentversion = '1.0.9';

PFMaBiSmAd's code will return '1.0.10'

My code will return '1.1.0'

 

So whatever meets your needs.

 

Cheers, Ace

[PFMaBiSmAd]

For a software/hardware version number, '1.0.10' would be the expected result. You wouldn't increase the next higher significant field just because you have made 10 changes in a field with lower significance.

[MasterACE14]

ah true.