fork(1) download
copy 
  1. <?php 
  2.  
  3. $vals = array('1.0','0.3','0.04','10.2','2,2','0.8');
  4.  
  5. foreach ( $vals as $v ):
  6.     echo (rgbv($v)) ? $v.' is valid<br />' : $v.' is NOT valid<br />';
  7. endforeach;
  8.  
  9. function rgbv($str) {
  10.     return preg_match('/^(0\.\d{1,2}|1\.0{1,2})$/', $str);
  11. }
  12.  
  13. ?>
Success #stdin #stdout 0.02s 24144KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1.0 is valid<br />0.3 is valid<br />0.04 is valid<br />10.2 is NOT valid<br />2,2 is NOT valid<br />0.8 is valid<br />
https://ideone.com/9SeZZ3
For http://stackoverflow.com/a/28014259/1810429 on Stack Overflow.
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!