Kata Library: PHP Practice
Sign Up
Time to claim your honor
Training
Practice
Complete challenging
Kata
to earn honor and ranks. Re-train to hone technique
Freestyle Sparring
Take turns remixing and refactoring others code through
Kumite
Community
Leaderboards
Achieve honor and move up the global leaderboards
Chat
Join our
Discord
server and chat with your fellow code warriors
Discussions
View our
Github Discussions
board to discuss general Codewars topics
About
Docs
Learn about all of the different aspects of Codewars
Blog
Read the latest news from Codewars and the community
Log In
Sign Up
Library
Collections
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Hardest
Easiest
Name
Relevance
Low Satisfaction
All
My Languages
Agda (Beta)
BF (Beta)
C
CFML (Beta)
Clojure
COBOL (Beta)
CoffeeScript
CommonLisp (Beta)
Coq
C++
Crystal
C#
D (Beta)
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy
Haskell
Haxe (Beta)
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin
λ Calculus (Beta)
Lean
Lua
NASM
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
Pascal (Beta)
Perl (Beta)
PHP
PowerShell (Beta)
Prolog (Beta)
PureScript (Beta)
Python
R (Beta)
Racket
Raku (Beta)
Reason (Beta)
RISC-V (Beta)
Ruby
Rust
Scala
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Approved & Beta
Approved
Beta
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algorithms
24
Arrays
12
Ciphers
1
Cryptography
2
Data Structures
9
Functional Programming
7
Fundamentals
24
Genetic Algorithms
1
Logic
1
Mathematics
2
Parsing
1
Queues
1
Regular Expressions
6
Security
1
Strings
24
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
24 Kata Found
7 kyu
Coding Meetup #4 - Higher-Order Functions Series - Find the first Python developer
10,330
PiotrBerebecki
Functional Programming
Data Structures
Arrays
Fundamentals
Algorithms
Strings
Regular Expressions
7 kyu
Coding Meetup #2 - Higher-Order Functions Series - Greet developers
12,794
PiotrBerebecki
Data Structures
Fundamentals
Algorithms
Strings
Regular Expressions
Arrays
Functional Programming
7 kyu
Coding Meetup #1 - Higher-Order Functions Series - Count the number of JavaScript developers coming from Europe
16,528
PiotrBerebecki
Data Structures
Fundamentals
Algorithms
Strings
Regular Expressions
Arrays
Functional Programming
7 kyu
Coding Meetup #3 - Higher-Order Functions Series - Is Ruby coming?
11,091
PiotrBerebecki
Data Structures
Fundamentals
Algorithms
Strings
Regular Expressions
Arrays
Functional Programming
7 kyu
Genetic Algorithm Series - #1 Generate
3,636
gabrielsiedler
2 Issues Reported
Strings
Fundamentals
Genetic Algorithms
Algorithms
6 kyu
Estimating Amounts of Subsets
2,278
raulbc777
4 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
7 kyu
Moves in squared strings (I)
14,174
g964
Fundamentals
Algorithms
Strings
6 kyu
Texting with an old-school mobile phone
908
B1ts
1 Issue Reported
Fundamentals
Strings
Algorithms
7 kyu
Sum of a Beach
4,999
megawatt
Fundamentals
Algorithms
Strings
Regular Expressions
7 kyu
Exclamation marks series #7: Remove words from the sentence if it contains one exclamation mark
4,223
myjinxin2015
Fundamentals
Strings
Algorithms
6 kyu
The Deaf Rats of Hamelin
6,813
dinglemouse
Fundamentals
Strings
Algorithms
Queues
Data Structures
6 kyu
Character with longest consecutive repetition
11,851
suic
Strings
Fundamentals
Algorithms
6 kyu
Simple Encryption #1 - Alternating Split
29,779
user5036852
3 Issues Reported
Cryptography
Algorithms
Strings
Arrays
Fundamentals
6 kyu
Encrypt this!
23,693
suic
Fundamentals
Strings
Regular Expressions
Arrays
Ciphers
Algorithms
Cryptography
Security
6 kyu
CamelCase Method
47,386
bestwebua
11 Issues Reported
Fundamentals
Algorithms
Strings
6 kyu
Write Number in Expanded Form
84,605
Belax8
Strings
Mathematics
Algorithms
Fundamentals
7 kyu
Jenny the youngest detective
2,308
veredrec
1 Issue Reported
Strings
Arrays
Algorithms
Fundamentals
7 kyu
Misleading Signs
809
MelonFruit
Fundamentals
Algorithms
Strings
5 kyu
Find the unique string
6,084
isqua
Fundamentals
Algorithms
Arrays
Strings
6 kyu
Coding Meetup #9 - Higher-Order Functions Series - Is the meetup age-diverse?
3,727
PiotrBerebecki
1 Issue Reported
Functional Programming
Data Structures
Arrays
Fundamentals
Algorithms
Strings
6 kyu
Coding Meetup #8 - Higher-Order Functions Series - Will all continents be represented?
5,460
PiotrBerebecki
1 Issue Reported
Functional Programming
Data Structures
Arrays
Fundamentals
Algorithms
Strings
7 kyu
Coding Meetup #6 - Higher-Order Functions Series - Can they code in the same language?
8,496
PiotrBerebecki
Functional Programming
Data Structures
Arrays
Fundamentals
Algorithms
Strings
7 kyu
Chuck Norris VI - Shopping with Chuck
476
PG1
1 Issue Reported
Fundamentals
Strings
Algorithms
Beta
Generate keywords
7
Ilyavovnenko
4 Issues Reported
Status:
Testing & feedback needed
Estimated Rank:
4 kyu
Algorithms
Strings
Arrays
Parsing
Fundamentals
Confirm
Collect:
undefined
Loading collection data...