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
ASCII Art
16
Algebra
3
Algorithms
342
Arrays
201
Big Integers
3
Binary
14
Bits
10
Cellular Automata
2
Ciphers
11
Combinatorics
4
Compilers
1
Cryptography
8
Data Science
2
Data Structures
22
Date Time
12
Debugging
13
Design Patterns
1
Discrete Mathematics
1
Dynamic Programming
2
Esoteric Languages
13
Filtering
1
Functional Programming
20
Fundamentals
634
Game Solvers
2
Games
20
Genetic Algorithms
7
Geometry
18
Graph Theory
2
Graphics
1
Graphs
1
Interpreters
15
Iterators
1
JSON
1
Linear Algebra
1
Linked Lists
8
Lists
36
Logic
24
Machine Learning
1
Mathematics
180
Matrix
5
Metaprogramming
1
Number Theory
10
Object-oriented Programming
25
Parsing
14
Performance
11
Permutations
3
Puzzles
86
Queues
1
Recursion
13
Refactoring
3
Reflection
4
Regular Expressions
44
Restricted
7
Reverse Engineering
1
Riddles
1
Searching
1
Security
5
Set Theory
1
Sorting
17
State Machines
2
Statistics
3
Streams
1
Strings
234
Tutorials
34
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
1,014 Kata Found
5 kyu
Pattern Generator
248
candrabeqx
Algorithms
ASCII Art
Beta
Is there an arrow missing ? (Relations - Part1: Reflexivity)
46
jonneroelofs2
1 Issue Reported
Status:
Waiting for issues to be resolved
Estimated Rank:
7 kyu
Logic
Set Theory
Puzzles
5 kyu
Count IP Addresses
31,858
xDranik
1 Issue Reported
Algorithms
5 kyu
Not very secure
50,972
mayrsascha
6 Issues Reported
Regular Expressions
Strings
5 kyu
Challenge Fun #14: Target Game
508
myjinxin2015
1 Issue Reported
Algorithms
Arrays
6 kyu
Decode the Morse code
122,779
jolaf
11 Issues Reported
Algorithms
7 kyu
Reverse words
158,592
jnicol
2 Issues Reported
Strings
Fundamentals
6 kyu
Calculate the area of a regular n sides polygon inside a circle of radius r
4,866
Chrono79
3 Issues Reported
Mathematics
Geometry
Fundamentals
6 kyu
Good words
169
osofem
Fundamentals
7 kyu
Send in the Clones
1,303
dinglemouse
Algorithms
6 kyu
Hofstadter Q
589
St3f4n
2 Issues Reported
Recursion
Algorithms
6 kyu
One Line Task: Largest Rectangle
311
myjinxin2015
Puzzles
Restricted
6 kyu
Product of two squares
256
osofem
Fundamentals
6 kyu
PHP Immutable
126
treffynnon
Fundamentals
6 kyu
Shortest Distance to a Character
678
CRYPTON
Strings
Algorithms
6 kyu
Integers: Recreation Two
1,079
g964
2 Issues Reported
Fundamentals
Mathematics
Puzzles
5 kyu
Integers: Recreation One
27,594
g964
1 Issue Reported
Fundamentals
Algorithms
8 kyu
Grasshopper - Terminal Game #1
11,523
danleavitt0
Object-oriented Programming
7 kyu
Jenny the youngest detective
2,749
veredrec
Strings
Arrays
Algorithms
Fundamentals
7 kyu
Blowing Birthday Candles
1,289
Mednoob
Algorithms
8 kyu
Remove First and Last Character
316,307
Steadyx
3 Issues Reported
Strings
Fundamentals
7 kyu
String Scramble
3,610
Dragoris
1 Issue Reported
Fundamentals
Strings
Arrays
6 kyu
Linked Lists - Insert Nth Node
2,932
JDeBolt
3 Issues Reported
Linked Lists
Data Structures
Fundamentals
8 kyu
Surface Area and Volume of a Box
33,394
KaraM
1 Issue Reported
Geometry
Fundamentals
7 kyu
Return the first M multiples of N
10,468
diophore
6 Issues Reported
Mathematics
Fundamentals
7 kyu
A Rule of Divisibility by 7
13,372
g964
1 Issue Reported
Fundamentals
6 kyu
Catalog
2,983
g964
1 Issue Reported
Fundamentals
Strings
4 kyu
Smallest possible sum
8,360
dkhaburdzania
7 Issues Reported
Algorithms
Mathematics
Arrays
7 kyu
Linked Lists - Get Nth Node
6,190
JDeBolt
5 Issues Reported
Linked Lists
Data Structures
Fundamentals
7 kyu
Ciphers #1 - The 01 Cipher
1,617
ngmhprogramming
1 Issue Reported
Fundamentals
Loading...
Confirm
Collect:
undefined
Loading collection data...