<?php
/**
* CRUD operations on a JSON noSQL database.
*
* Main class for creating, retreiving, updating and deleting records in a JSON noSQL database.
*
* @version 1.0
* @author Dave
*/
class jsondb
{
public $dataFolder = 'jsondata';
/**
* Creates database file
*
* @param string $dbName Name of database file to create
* @return void
*/
public function cDataBase($dbName){
$fileName = $this->dataFolder.'/'.$dbName;
file_put_contents($fileName,null,FILE_APPEND);
}
/**
* Retrieves database data
*
* @param string $dbName Name of database file to retrieve
* @return array Data or empty if none
*/
public function rDataBase($dbName){
$fileName = $this->dataFolder.'/'.$dbName;
$dataString = file_get_contents($fileName);
$data = json_decode($dataString,true);
if( is_array($data) ){
ksort($data);
return $data;
}else{
return array();
}
}
/**
* Updates database data
*
* @param string $dbName Name of database file to update
* @param array $data Data to update
* @return void
*/
public function uDataBase($dbName,$data){
$fileName = $this->dataFolder.'/'.$dbName;
$jsonData = json_encode($data);
file_put_contents($fileName,$jsonData);
}
/**
* Deletes database
*
* @param string $dbName Name of database file to delete
* @return void
*/
public function dDataBase($dbName){
$fileName = $this->dataFolder.'/'.$dbName;
unlink($fileName);
}
/**
* Gets next record id
*
* @param array $data Database data
* @return int Id of next record
*/
public function nextRecord($data){
if( is_array($data) ){
ksort($data);
end($data);
$id = key($data)+1;
}else{
$id = 1;
}
return $id;
}
}
?>
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