Fibonacci in PHP in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Gray Code Decoder Gray Code Encoder Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 81st ytaki0801 🇯🇵 723 47 5ms 19 Jun 2021 81st KingSkyrock 🇺🇸 723 47 4ms 4 Apr 2022 81st RutZap 723 47 5ms 24 Jan 2023 81st helbling 🇨🇭 723 47 5ms 11 Mar 2024 81st VictorCanela 723 47 5ms 11 Sep 2024 86th KarstenHohmeier 708 48 10ms 30 Mar 2018 86th KrausRaus 🇺🇸 708 48 4ms 12 Jan 2021 86th MichaelMBradley 🇨🇦 708 48 5ms 22 Mar 2022 86th oceko 708 48 5ms 26 Nov 2022 86th Adix-null 🇱🇹 708 48 5ms 4 Jul 2023 86th quabenaa 708 48 5ms 12 Jul 2023 86th flekAI 708 48 4ms 14 hours ago 93rd volktron 694 49 4ms 4 Jun 2019 93rd adriweb 🇫🇷 694 49 5ms 8 Aug 2023 93rd GodlyProgrammer1 694 49 5ms 22 Nov 2025 96th gauthier 680 50 5ms 17 Nov 2017 96th aschui 680 50 5ms 16 Oct 2018 96th MikeSimpson 680 50 6ms 16 Oct 2018 96th yzhs 🇩🇪 680 50 5ms 29 Feb 2020 96th ArmaanAS 680 50 5ms 8 Mar 2021 96th kayahr 680 50 5ms 18 Jun 2021 96th seanplowman 680 50 5ms 18 Jul 2022 96th zamppe 680 50 5ms 8 Aug 2022 96th wh3n3v3r 🇨🇿 680 50 6ms 15 Nov 2024 96th madeforlosers 680 50 5ms 22 Nov 2024 96th Matter1024 🇮🇳 680 50 5ms 13 days ago 107th vonKrafft 667 51 5ms 25 Mar 2020 107th pschmid0 🇺🇸 667 51 5ms 25 Aug 2022 107th owen-c-parker 🇺🇸 667 51 4ms 23 Nov 2022 107th zakariamouhid 667 51 5ms 10 Jan 2023 107th CheeseCake628 🇳🇴 667 51 4ms 11 Mar 2023 107th TemaYud 667 51 5ms 7 Oct 2024 113th masashimachida 654 52 5ms 28 Jul 2020 113th hossammohammed72 654 52 5ms 12 Jul 2023 113th infostreams 654 52 4ms 14 Jul 2023 113th Andrey2001 654 52 5ms 24 Nov 2025 117th bastienvoirin 🇫🇷 642 53 5ms 30 Nov 2020 117th ybrodala 642 53 6ms 24 Aug 2021 117th Bobini1 🇵🇱 642 53 5ms 29 Oct 2021 117th mathisfun271 642 53 6ms 20 Feb 2024 117th dokutan 642 53 6ms 10 Apr 2025 122nd d4rkne55 630 54 5ms 7 Mar 2018 122nd tjtnorton 630 54 6ms 11 Dec 2018 122nd ashtraypettingzoo 🇺🇸 630 54 5ms 16 Feb 2023 122nd desecaw13 630 54 5ms 24 Jan 2025 122nd roupiq 🇵🇱 630 54 5ms 8 mins ago 127th HexF 618 55 5ms 7 Dec 2017 127th Just4FunCoder 618 55 5ms 26 Aug 2024 129th GiftOfDeath 607 56 4ms 5 Feb 2018 129th jrdbrndt 607 56 5ms 14 Feb 2018 129th rambox11 607 56 4ms 7 Apr 2018 129th osinsky 607 56 6ms 1 May 2019 129th MichalMarsalek 🇨🇿 607 56 5ms 29 Nov 2021 129th H3Rol4x 607 56 5ms 5 Dec 2023 135th bridennis 596 57 5ms 5 Apr 2019 135th leopoldinelolcat 596 57 5ms 12 Sep 2019 135th Axsag 🇫🇷 596 57 5ms 23 Jul 2021 135th CedricGebistorf 596 57 5ms 3 Feb 2022 135th aminrnd 596 57 5ms 13 Jul 2023 135th epic-programmer-guy 596 57 5ms 26 Dec 2023 135th Kokusui 🇯🇵 596 57 5ms 23 Jul 2024 135th rzv-me 596 57 5ms 6 Oct 2024 135th TheAtrossian 596 57 6ms 8 Jan 2025 135th blaztoma 🇱🇹 596 57 5ms 22 Sep 2025 145th rollershutter 586 58 5ms 5 Oct 2018 145th shaunjc 586 58 5ms 2 Jul 2021 145th Maximizer02 586 58 5ms 16 Jan 2024 145th PyryL 🇫🇮 586 58 5ms 23 Aug 2024 149th liviucerchez 576 59 5ms 23 Oct 2023 150th WitPxxl 567 60 4ms 29 Dec 2017 150th viktoras25 567 60 5ms 12 Apr 2019 150th MightyJoeYoung 567 60 5ms 3 May 2021 153rd mbiniek 557 61 5ms 10 Nov 2022 153rd charliegaming 557 61 4ms 3 Oct 2023 153rd jdcodes28 557 61 5ms 11 Sep 2024 153rd Lv0Sys 🇵🇱 557 61 5ms 25 May 2025 157th Beancake12 548 62 6ms 10 Apr 2019 157th verticall 548 62 5ms 28 Jul 2019 157th germania 548 62 4ms 6 Jan 2020 157th JRaspass 🇬🇧 548 62 4ms 6 Mar 2020 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