Trying to combine two regex into one..

[Scooby08]

Is there a way to combine these two lines to work as one? They both work separately..

 

<?php
preg_replace('/^[0-9]+/','+$0',$string);
preg_replace('/[^A-Za-z0-9]+$/','.5',$string);
?>

 

Am checking numbers that could be any of the following (left of "=" is the original and the right is what I'm trying to achieve; the "½" is a special character, not 1/2):

 

5 = +5

-5 = -5

5½ = +5.5

-5½ = -5.5

 

I'm rather new to regex so maybe there's a better way to write what I have as well..

 

Thanks!!

 

 

 

 

[cags]

You can't really do that in one pattern. Well you can but there's no real point since they perform different tasks. Rather than calling preg_replace twice though you could pass it arrays.

 

$patterns = array('/^[0-9]+/','+$0');
$replacements = array('/[^A-Za-z0-9]+$/','.5');

$output = preg_replace($patterns, $replacements, $input);

Also I'm certain that can't be the best way to achieve what your after, but for any meaningful help we would need a sample of various inputs (ie values you pass in as $string) as well as the expected outputs.

[cags]

I was just checking somebodies awake... that should of course have read...

 

$patterns = array('/^[0-9]+/','/[^A-Za-z0-9]+$/');
$replacements = array('+$0','.5');

Props to salathe for noticing this oversigh... *ahem* deliberate mistake.

[Scooby08]

Thanks a bunch!! That'll do it..