MySQL-CRUD-API

Simple PHP script that adds a very basic API to a MySQL database.

Requirements

• PHP 5.3 or higher with MySQLi enabled
• Apache with mod_rewrite enabled (can also run on Nginx)

Limitations

• Public API only: no authentication or authorization
• No relationship (foreign key) support (todo)
• No column selection: always returns full table (todo)
• Single database

Features

• Very little code, easy to adapt and maintain
• Streaming data, low memory footprint
• Condensed JSON: first row contains field names
• Optional white- and blacklist support for tables
• JSONP support for cross-domain requests
• Combined requests with wildcard support for table names
• Pagination, sorting and search support

Configuration

Edit the following lines in the bottom of the file "api.php":

$api = new MySQL_CRUD_API(
	"localhost",                        // hostname
	"user",                             // username
	"pass",                             // password
	"db",                               // database
	false,                              // whitelist
	array("users"=>"crudl")             // blacklist
);
$api->executeCommand();

Usage

You can do all CRUD (Create, Read, Update, Delete) operations and extra List operation. Here is how:

List

List all records of a database table.

GET http://localhost/api.php/categories
GET http://localhost/api.php/categories,users
GET http://localhost/api.php/cate*
GET http://localhost/api.php/cate*,user*

Output:

{"categories":{"columns":["id","name"],"records":[["1","Internet"],["3","Web development"]]}}

List + Pagination

The "page" parameter holds the requested page. The default page size is 20, but can be adjusted (e.g. to 50):

GET http://localhost/api.php/categories?page=1
GET http://localhost/api.php/categories?page=1,50

Output:

{"categories":{"columns":["id","name"],"records":[["1","Internet"],["3","Web development"]],"results":2}}

List + Filter

Search is implemented with the "filter" parameter. You need to specify the column name, a colon and the value you want to filter on. The filter match types is "start" by default, but can easily be adjusted. These are supported:

• start (string starts with value)
• end (string end with value)
• any (string contains value)
• exact (string or number matches exactly)
• lower (number is lower than value)
• upto (number is lower than or equal to value)
• from (number is higher than or equal to value)
• higher (number is higher than value)
• in (number is in comma seperated list of values)

GET http://localhost/api.php/categories?filter=name:Inter
GET http://localhost/api.php/categories?filter=name:Internet&match=exact
GET http://localhost/api.php/categories?filter=id:1&match=upto
GET http://localhost/api.php/categories?filter=id:2&match=lower

Output:

{"categories":{"columns":["id","name"],"records":[["1","Internet"]]}}

List + Order

With the "order" parameter you can sort. By default the sort is in ascending order, but by specifying "desc" this can be reversed:

GET http://localhost/api.php/categories?order=name,desc

Output:

{"categories":{"columns":["id","name"],"records":[["3","Web development"],["1","Internet"]]}}

Create

You can easily add a record using the POST method. The call returns the rows affected.

POST http://localhost/api.php/categories
{"id":"1","name":"Internet"}

Output:

1

Read

If you want to read a single object you can use:

GET http://localhost/api.php/categories/1

Output:

{"id":"1","name":"Internet"}

Update

Editing a record is done with the PUT method. The call returns the rows affected.

PUT http://localhost/api.php/categories/2
{"id":"1","name":"Internet networking"}

Output:

1

Delete

The DELETE verb is used to delete a record. The call returns the rows affected.

DELETE http://localhost/api.php/categories/2

Output:

1

Installation

Put the file "api.php" somewhere and enjoy!

Tests

Yes, written for PHPUnit. Run:

wget https://phar.phpunit.de/phpunit.phar
php phpunit.phar test.php

No complete coverage yet.

License

MIT