config.json

{
  "language": "PHP",
  "slug": "php",
  "active": true,
  "status": {
    "concept_exercises": true,
    "test_runner": true,
    "representer": true,
    "analyzer": false
  },
  "blurb": "PHP is a general purpose scripting language designed primarily for web development. It is one of the most popular programming languages for web development, and supports multiple programming paradigms.",
  "version": 3,
  "online_editor": {
    "indent_style": "space",
    "indent_size": 4,
    "highlightjs_language": "php"
  },
  "test_runner": {
    "average_run_time": 2
  },
  "files": {
    "solution": [
      "%{pascal_slug}.php"
    ],
    "test": [
      "%{pascal_slug}Test.php"
    ],
    "example": [
      ".meta/example.php"
    ],
    "exemplar": [
      ".meta/exemplar.php"
    ]
  },
  "exercises": {
    "concept": [
      {
        "slug": "lasagna",
        "name": "Lucian's Luscious Lasagna",
        "uuid": "5d76f1a2-f80b-4a82-8176-b52230974dab",
        "concepts": [
          "basic-syntax"
        ],
        "prerequisites": [],
        "status": "beta"
      },
      {
        "slug": "sweethearts",
        "name": "Highschool Sweethearts",
        "uuid": "d6b00994-36b1-4d2c-9a7f-d55f3cbdf4de",
        "concepts": [
          "strings"
        ],
        "prerequisites": [
          "basic-syntax"
        ],
        "status": "beta"
      },
      {
        "slug": "pizza-pi",
        "name": "Pizza Pi",
        "uuid": "7acdb4ef-6589-4e93-b374-65bb5f06fd29",
        "concepts": [
          "integers",
          "floating-point-numbers",
          "arithmetic-operators"
        ],
        "prerequisites": [
          "basic-syntax"
        ],
        "status": "beta"
      },
      {
        "slug": "annalyns-infiltration",
        "name": "Annalyn's Infiltration",
        "uuid": "18c47e7b-fb34-4d00-b693-a3a5917e5f15",
        "concepts": [
          "booleans"
        ],
        "prerequisites": [
          "basic-syntax"
        ],
        "status": "beta"
      },
      {
        "slug": "windowing-system",
        "name": "Windowing System",
        "uuid": "6f285fd2-4f55-4b65-9797-992ddd5e8a1d",
        "concepts": [
          "class-basics"
        ],
        "prerequisites": [
          "integers"
        ],
        "status": "beta"
      },
      {
        "slug": "language-list",
        "name": "Language List",
        "uuid": "e83a77a5-d3b0-481c-87c1-e9d1f3684b79",
        "concepts": [
          "arrays",
          "variable-length-arguments"
        ],
        "prerequisites": [
          "strings"
        ],
        "status": "beta"
      },
      {
        "slug": "city-office",
        "name": "City Office",
        "uuid": "4441e914-2f05-4856-b457-70a4968c5dbb",
        "concepts": [
          "type-declaration"
        ],
        "prerequisites": [
          "class-basics",
          "arrays"
        ],
        "status": "beta"
      },
      {
        "slug": "lucky-numbers",
        "name": "Lucky Numbers",
        "uuid": "23de47c6-d020-448f-860c-cf15ffd4db17",
        "concepts": [
          "type-juggling"
        ],
        "prerequisites": [
          "arithmetic-operators",
          "arrays",
          "integers",
          "strings",
          "type-declaration"
        ],
        "status": "beta"
      }
    ],
    "practice": [
      {
        "slug": "hello-world",
        "name": "Hello World",
        "uuid": "56116aa6-e3d1-4122-a394-a7e0f6ab6fea",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "optional_values",
          "text_formatting"
        ]
      },
      {
        "slug": "reverse-string",
        "name": "Reverse String",
        "uuid": "cb533bd3-641d-47ad-a8ca-cebc76075c0b",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "strings"
        ]
      },
      {
        "slug": "resistor-color",
        "name": "Resistor Color",
        "uuid": "141733c5-6d35-4320-a248-54f6a16f1f85",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "hamming",
        "name": "Hamming",
        "uuid": "48de430b-0d88-4af0-ab48-d00b840312bb",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "filtering",
          "strings"
        ]
      },
      {
        "slug": "resistor-color-duo",
        "name": "Resistor Color Duo",
        "uuid": "1e72df07-c456-4501-a274-4b0e2b245167",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "proverb",
        "name": "Proverb",
        "uuid": "75519a64-8237-49e5-927f-c5974816258e",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2
      },
      {
        "slug": "gigasecond",
        "name": "Gigasecond",
        "uuid": "81aa4bc9-4936-46c2-bb2f-433246a86c5d",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "dates"
        ]
      },
      {
        "slug": "tournament",
        "name": "Tournament",
        "uuid": "e0572cf4-5481-4da4-bf9b-0e921cb81627",
        "practices": [],
        "prerequisites": [],
        "difficulty": 3,
        "topics": [
          "parsing",
          "strings"
        ]
      },
      {
        "slug": "simple-cipher",
        "name": "Simple Cipher",
        "uuid": "054a332f-f6db-46eb-b86c-2c95829c9ed2",
        "practices": [],
        "prerequisites": [],
        "difficulty": 6,
        "topics": [
          "algorithms",
          "conditionals",
          "loops",
          "randomness",
          "strings",
          "text_formatting",
          "transforming"
        ]
      },
      {
        "slug": "high-scores",
        "name": "High Scores",
        "uuid": "723b1abd-24e3-4a0d-a34d-20b7b76c9f59",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "arrays"
        ]
      },
      {
        "slug": "bob",
        "name": "Bob",
        "uuid": "ae91650f-fe06-466a-a40a-6a24f5926fbe",
        "practices": [],
        "prerequisites": [],
        "difficulty": 4,
        "topics": [
          "control_flow_if_else_statements",
          "strings"
        ]
      },
      {
        "slug": "rna-transcription",
        "name": "RNA Transcription",
        "uuid": "81d96250-f2e4-4228-a8e9-254b6b8784ac",
        "practices": [],
        "prerequisites": [],
        "difficulty": 3,
        "topics": [
          "strings",
          "transforming"
        ]
      },
      {
        "slug": "luhn",
        "name": "Luhn",
        "uuid": "1b034dc9-be9a-4434-bc78-57742f63107e",
        "practices": [],
        "prerequisites": [],
        "difficulty": 4
      },
      {
        "slug": "isogram",
        "name": "Isogram",
        "uuid": "435f0ec1-f53c-4fe4-b92b-43a582c2fa82",
        "practices": [],
        "prerequisites": [],
        "difficulty": 4,
        "topics": [
          "filtering",
          "strings"
        ]
      },
      {
        "slug": "resistor-color-trio",
        "name": "Resistor Color Trio",
        "uuid": "eb3ef767-fb22-4f5a-96aa-e1f680644dd9",
        "practices": [],
        "prerequisites": [],
        "difficulty": 3
      },
      {
        "slug": "robot-name",
        "name": "Robot Name",
        "uuid": "b24d5f98-8d62-4177-b0ae-306bbf0f918b",
        "practices": [],
        "prerequisites": [],
        "difficulty": 3,
        "topics": [
          "classes",
          "randomness",
          "strings"
        ]
      },
      {
        "slug": "twelve-days",
        "name": "Twelve Days",
        "uuid": "c5b122ab-6f8e-476b-8b55-84670edc93b5",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2
      },
      {
        "slug": "difference-of-squares",
        "name": "Difference of Squares",
        "uuid": "238d86fe-6e29-43b0-9e27-a54caa773618",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "integers",
          "math"
        ]
      },
      {
        "slug": "grade-school",
        "name": "Grade School",
        "uuid": "2d2974e2-2d5e-41d9-8dc3-951967631b37",
        "practices": [],
        "prerequisites": [],
        "difficulty": 6,
        "topics": [
          "arrays"
        ]
      },
      {
        "slug": "robot-simulator",
        "name": "Robot Simulator",
        "uuid": "cc6c3b27-b719-454c-a743-7bc73bd47cf1",
        "practices": [],
        "prerequisites": [],
        "difficulty": 5,
        "topics": [
          "oop"
        ]
      },
      {
        "slug": "run-length-encoding",
        "name": "Run-Length Encoding",
        "uuid": "0a453685-55c2-47e2-88b2-e26d1d8fbde9",
        "practices": [],
        "prerequisites": [],
        "difficulty": 5,
        "topics": [
          "algorithms",
          "strings",
          "text_formatting"
        ]
      },
      {
        "slug": "largest-series-product",
        "name": "Largest Series Product",
        "uuid": "4fbeb249-dc1d-4282-8455-d1c06a7cb420",
        "practices": [],
        "prerequisites": [],
        "difficulty": 5,
        "topics": [
          "integers",
          "math",
          "strings",
          "transforming"
        ]
      },
      {
        "slug": "accumulate",
        "name": "Accumulate",
        "uuid": "87edd481-d099-46b8-9137-22bf8f817e42",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "extension_methods",
          "sequences",
          "transforming"
        ]
      },
      {
        "slug": "acronym",
        "name": "Acronym",
        "uuid": "d2fe4844-1dfa-4959-840b-1f1818203d2f",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "strings",
          "transforming"
        ]
      },
      {
        "slug": "all-your-base",
        "name": "All Your Base",
        "uuid": "b71a6079-f7e8-431d-bc1e-dff72918f9dc",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "math"
        ]
      },
      {
        "slug": "anagram",
        "name": "Anagram",
        "uuid": "d8485927-3aef-4e5a-a8b1-9b81c6c5aa26",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "filtering",
          "strings"
        ]
      },
      {
        "slug": "atbash-cipher",
        "name": "Atbash Cipher",
        "uuid": "79acfce3-fdce-45b4-9d87-bf5caf4825ab",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "algorithms",
          "strings",
          "transforming"
        ]
      },
      {
        "slug": "beer-song",
        "name": "Beer Song",
        "uuid": "edaafcf7-74cd-4d21-8b07-f357596bca37",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "algorithms",
          "text_formatting"
        ]
      },
      {
        "slug": "binary",
        "name": "Binary",
        "uuid": "8a355fd3-b627-49fe-a0b6-58818b9bd8ea",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "math"
        ]
      },
      {
        "slug": "bowling",
        "name": "Bowling",
        "uuid": "54df08ec-4a04-40f3-b974-e59de425ec80",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "algorithms",
          "control_flow_loops"
        ]
      },
      {
        "slug": "change",
        "name": "Change",
        "uuid": "4f707562-2e46-475e-8e0b-1058416a7256",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "arrays",
          "integers"
        ]
      },
      {
        "slug": "clock",
        "name": "Clock",
        "uuid": "682d4bab-ca03-4402-971b-ab2a09e55444",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "structural_equality",
          "time"
        ]
      },
      {
        "slug": "collatz-conjecture",
        "name": "Collatz Conjecture",
        "uuid": "94f22d74-e358-41cb-be64-8abc111ff95a",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "algorithms",
          "control_flow_conditionals",
          "control_flow_loops",
          "integers",
          "math"
        ]
      },
      {
        "slug": "connect",
        "name": "Connect",
        "uuid": "774595ef-84e8-44f8-baaa-88bccf38d4d2",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "crypto-square",
        "name": "Crypto Square",
        "uuid": "14aa815d-8073-4a71-841e-9bfdba4b0b1a",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "diamond",
        "name": "Diamond",
        "uuid": "64a8f560-0991-4897-812e-7c57a2617fde",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "lists",
          "loops",
          "strings"
        ]
      },
      {
        "slug": "etl",
        "name": "ETL",
        "uuid": "58463b64-9c22-4813-893d-38d11fc8d9a5",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "dictionaries",
          "lists",
          "transforming"
        ]
      },
      {
        "slug": "leap",
        "name": "Leap",
        "uuid": "f2330729-2ddc-4a9b-b364-51f1197f69ff",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "integers"
        ]
      },
      {
        "slug": "matching-brackets",
        "name": "Matching Brackets",
        "uuid": "15ea518d-6c35-442a-9150-86da2d865703",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "parsing",
          "strings"
        ]
      },
      {
        "slug": "meetup",
        "name": "Meetup",
        "uuid": "be7caa7e-ca50-499d-afb3-7da48b3397e2",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "minesweeper",
        "name": "Minesweeper",
        "uuid": "96e47e5b-ab4f-472d-b56f-9ddcb3994320",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "parsing",
          "transforming"
        ]
      },
      {
        "slug": "nucleotide-count",
        "name": "Nucleotide Count",
        "uuid": "5b1c032e-4f8c-4161-a601-4a67550b710d",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "dictionaries",
          "strings"
        ]
      },
      {
        "slug": "perfect-numbers",
        "name": "Perfect Numbers",
        "uuid": "08639413-1e95-45e5-a8e2-071f3bf590c4",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "math"
        ]
      },
      {
        "slug": "phone-number",
        "name": "Phone Number",
        "uuid": "d761002c-1a60-4be8-9593-a17981c3b06d",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "parsing",
          "transforming"
        ]
      },
      {
        "slug": "rail-fence-cipher",
        "name": "Rail Fence Cipher",
        "uuid": "9aa69058-1bce-4b65-bd26-7270698f97ea",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "algorithms",
          "cryptography",
          "lists",
          "text_formatting"
        ]
      },
      {
        "slug": "series",
        "name": "Series",
        "uuid": "75718f1b-1f54-438d-a388-1c2faacafd32",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1
      },
      {
        "slug": "sieve",
        "name": "Sieve",
        "uuid": "07258892-c06f-4833-97f6-56ead8ca113d",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "filtering",
          "math"
        ]
      },
      {
        "slug": "space-age",
        "name": "Space Age",
        "uuid": "334ba0ec-2c7b-4c92-ac43-e4777aa46d9c",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "floating_point_numbers"
        ]
      },
      {
        "slug": "transpose",
        "name": "Transpose",
        "uuid": "cb413881-99b6-493f-bea2-89563dc173a6",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "arrays",
          "lists",
          "loops",
          "matrices",
          "strings",
          "text_formatting"
        ]
      },
      {
        "slug": "triangle",
        "name": "Triangle",
        "uuid": "75763125-adb8-4ab3-9630-4e5a85c6ae35",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "enumerations",
          "integers"
        ]
      },
      {
        "slug": "trinary",
        "name": "Trinary",
        "uuid": "ec96bb00-b61e-4881-af0d-445d07afeb6e",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "math"
        ]
      },
      {
        "slug": "two-fer",
        "name": "Two Fer",
        "uuid": "fae78f5f-316b-44b7-aade-f61b3be990a7",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "strings"
        ]
      },
      {
        "slug": "variable-length-quantity",
        "name": "Variable Length Quantity",
        "uuid": "63e62154-1e3d-4a54-9489-1197741fcf1c",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "algorithms",
          "bitwise_operations"
        ]
      },
      {
        "slug": "word-count",
        "name": "Word Count",
        "uuid": "6670ef4d-c838-4a9d-8de6-42f31555eec7",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "dictionaries",
          "strings",
          "transforming"
        ]
      },
      {
        "slug": "wordy",
        "name": "Wordy",
        "uuid": "85408bdd-3c22-4b5a-9c61-044ddfb0c3ac",
        "practices": [],
        "prerequisites": [],
        "difficulty": 1,
        "topics": [
          "parsing",
          "strings",
          "transforming"
        ]
      },
      {
        "slug": "armstrong-numbers",
        "name": "Armstrong Numbers",
        "uuid": "9e7be7f8-ea50-4245-bde3-2207f0bcebdd",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "algorithms",
          "math"
        ]
      },
      {
        "slug": "flatten-array",
        "name": "Flatten Array",
        "uuid": "9dede68f-6b48-4142-88fd-0cf2c9de7207",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "arrays"
        ]
      },
      {
        "slug": "queen-attack",
        "name": "Queen Attack",
        "uuid": "94ceeb58-55c0-48b5-8a7c-d274f60b9010",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "integers"
        ]
      },
      {
        "slug": "protein-translation",
        "name": "Protein Translation",
        "uuid": "f5ae2594-7e6d-4722-b6fe-df179a71aada",
        "practices": [],
        "prerequisites": [],
        "difficulty": 3
      },
      {
        "slug": "raindrops",
        "name": "Raindrops",
        "uuid": "0ad53d66-cbdc-4d9a-a083-d24af216d3d9",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "filtering",
          "text_formatting"
        ]
      },
      {
        "slug": "scrabble-score",
        "name": "Scrabble Score",
        "uuid": "3c5f3e65-c594-49c2-84e6-3bd3905d7ea3",
        "practices": [],
        "prerequisites": [],
        "difficulty": 2,
        "topics": [
          "control_flow_loops",
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