Matching GUIDs/UUIDs : Regular Expressions « String « PHP






Matching GUIDs/UUIDs

 
<?php 
$uuid = "1111-1111-1111-1111"; 

function printResults($str) { 
if (eregi("^[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}$", $str)) { 
    printf("'%s' is a valid GUID/UUID.\n", $str); 
} else { 
    printf("'%s' is NOT a valid GUID/UUID.\n", $str); 
} 
} 

printResults($uuid); 

?>
  
  








Related examples in the same category

1.Brackets [] finds a range of characters.
2.Character Classes
3.Complete list of regular expression examples
4.\b and \B, equate to "On a word boundary" and "Not on a word boundary," respectively.
5.^ and $ are line anchors.
6.Line Anchors
7.Match URL
8.Match an IP address
9.Match the smallest number of characters starting with "p" and ending with "t"
10.Matching a Valid E-mail Address
11.Matching a Valid IP Address
12.Matching using backreferences
13.Matching with Greedy vs. Nongreedy Expressions
14.Matching with character classes and anchors
15.Matching with |
16.Define a pattern and use parentheses to match individual elements within it
17.Greedy Qualifiers
18.Greedy and non-greedy matching
19.Greedy versus nongreedy matching
20.Grouping captured subpatterns
21.Validating Pascal Case Names
22.Validating U.S. Currency
23.Validating a credit card number
24.Nongreedy Qualifiers
25.POSIX Regular Expressions Character Classes
26.POSIX Regular Expressions Character Classes
27.Ranges
28.Option patterns:
29.Predefined Character Ranges (Character Classes)
30.Pattern matches:
31.Pattern match extenders:
32.Perl-Compatible Regular Expressions (PCRE)
33.Qualifiers restrict the number of times the preceding expression may appear.
34.Quantifiers for Matching a Recurring Character
35.Quantifiers: +, *, ?, {int. range}, and $ follow a character sequence:
36.Special classes for regular expression
37.Regular expressions using character classes