jsondb.php

<?php
class jsondb
{
    public $result;
    
    private $file;
    private $data;
    function __construct($file = "test43"){
        if(!file_exists($file)) fclose(fopen($file, "w+"));
        if(!$this->file) $this->file = $file;
		if(!isset($this->data)) $this->data = ($try = json_decode(file_get_contents($this->file), true)) != false ? $try : array();
    }
    function read($key = null){
        return $key !== null ? ($this->data[$key] ? $this->data[$key] : "Record not found.") : $this->data;
    }
    function write($value, $key = null, $replace = false){
        if($key && array_key_exists($key, $this->data)){
			if($replace == "delete"){
				unset($this->data[$key]);
				return $this->commit();
			}elseif($replace === true ){
			    $this->data[$key] = $value;
			    return $this->commit();
			}else{
				return "Key already exists,";
			}
		}
		$key !== null ? $this->data[$key] = $value : $this->data[] = $value;
		return $this->commit();
    }
	private function commit($data = false){
		return file_put_contents($this->file, json_encode(($data ? $data : $this->data)));
	}
}

// cleanup if needed
// unlink("test43");




/*
Supports the basic 4 operations.
Create    ->write(value, key)
Read      ->read(key) No key will provide the entire database.
Update    ->write(value, key, true) Overwrite check is off.
Delete    ->write(value, key, "delete")

*/
$app = new jsondb();








// tests
// Write some demo data
// $app->write("Some value");
// $app->write("Some value 1", "Some Key 1");
// $app->write("Some other value");
// $app->write("Some value 2", "Some Key 2");


// Data is preserved if an existing key is entered.
// echo $app->read("Some Key 2");
// $app->write("Some new value 2", "Some Key 2");
// echo $app->read("Some Key 2");


// Data is updated
// $app->write("Some new value 2", "Some Key 2", true);
// echo $app->read("Some Key 2");

// Data is deleted by key
// $app->write(1, 1, "delete");
// echo $app->read("Some Key 2");


?>
<textarea><?php print_r(json_decode(file_get_contents("test43"), true)); ?></textarea>