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oldhaven/php/core/classes/db/BeatDB.class.php

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PHP

<?php
// 123456 --> /www/beatdb/1/2/3/4/5/123456.json
class BeatDB {
private static $_db_root = '/www/beatdb/';
public static function get($key) {
if (self::exists($key)) {
return json_decode(
file_get_contents(
self::$_db_root . implode('/', self::getFilePathByKey($key))
)
);
} else {
return false;
}
}
public static function set($key, $data) {
$path = self::getFilePathByKey($key);
$part = self::$_db_root;
for ($i = 0; $i < count($path) - 1; $i++) {
$part .= $path[$i] .'/';
}
if (!file_exists($part)) {
if (!mkdir($part, 0777, true)) {
return false;
}
}
file_put_contents($part . $path[$i], json_encode($data));
chmod($part . $path[$i], 0777);
return true;
}
public static function delete($key) {
$path = self::getFilePathByKey($key);
$ret = array();
for ($i = count($path) - 1; $i >= 0; $i--) {
$part = self::$_db_root . implode('/', $path);
unset($path[$i]);
if (is_file($part)) {
unlink($part);
} elseif (count(scandir($part)) == 2) {
rmdir($part);
}
}
return true;
}
public static function exists($key) {
return file_exists(self::$_db_root . implode('/', self::getFilePathByKey($key)));
}
private static function getFilePathByKey($key) {
$key = strval($key);
$path = array();
for ($i = 0; $i < strlen($key) - 1; $i++) {
$path[] = substr($key, $i, 1);
}
$path[] = $key .'.json';
return $path;
}
}