Option patterns: : Regular Expressions « String « PHP






Option patterns:

 
(pattern) = Groups the pattern to act as one item and captures it
    
    
    
    (x|y) = Matches either pattern x, or pattern y
    
    
    
    [abc] = Matches either the character a, b, or c
    
    
    
    [^abc] = Matches any character except a, b, or c
    
    
    
    [a-f] = Matches characters a through f
  
  








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 GUIDs/UUIDs
11.Matching a Valid E-mail Address
12.Matching a Valid IP Address
13.Matching using backreferences
14.Matching with Greedy vs. Nongreedy Expressions
15.Matching with character classes and anchors
16.Matching with |
17.Define a pattern and use parentheses to match individual elements within it
18.Greedy Qualifiers
19.Greedy and non-greedy matching
20.Greedy versus nongreedy matching
21.Grouping captured subpatterns
22.Validating Pascal Case Names
23.Validating U.S. Currency
24.Validating a credit card number
25.Nongreedy Qualifiers
26.POSIX Regular Expressions Character Classes
27.POSIX Regular Expressions Character Classes
28.Ranges
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