PHP Database Integrity Checker

A simple PHP script to validate MySQL database integrity by checking connections, database existence, table listings, and detecting duplicate entries in PRIMARY and UNIQUE indexes.

---

Features

• Validates MySQL connection.
• Checks if the specified database exists.
• Reads and lists all tables in the database.
• Detects duplicate values in PRIMARY and UNIQUE indexes.
• Outputs results in structured JSON.

---

Requirements

• PHP 7.4+ (with PDO and MySQL support)
• MySQL or MariaDB

---

Installation

1. Clone the repository:

git clone http://github.com/BaseMax/php-database-integrity-checker.git
cd php-database-integrity-checker

2. Place checker.php on your server.

3. Access the script via POST request with required parameters.

---

Usage

Required POST parameters:

• host (optional, default: localhost)
• port (optional, default: 3306)
• user (required)
• pass (optional)
• dbname (required)

Example POST request with curl:

curl -X POST -d "host=localhost&port=3306&user=root&pass=secret&dbname=testdb" \
http://yourserver.com/checker.php

Sample JSON Output:

{
    "status": true,
    "database": "testdb",
    "tables_checked": 5,
    "issues": [
        {
            "table": "users",
            "index": "PRIMARY",
            "columns": ["id"],
            "duplicates": [
                {"id": 1, "cnt": 2},
                {"id": 5, "cnt": 3}
            ]
        }
    ]
}

If no issues are found:

{
    "status": true,
    "database": "testdb",
    "tables_checked": 5,
    "issues": []
}

If an error occurs (e.g., database not found):

{
    "status": false,
    "error": "Database 'testdb' does not exist."
}

---

License

This project is licensed under the MIT License. See the LICENSE file for details.