PHP client for relations

blog.sql

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+-- Adminer 4.1.0 MySQL dump
+
+SET NAMES utf8;
+SET time_zone = '+00:00';
+SET foreign_key_checks = 0;
+SET sql_mode = 'NO_AUTO_VALUE_ON_ZERO';
+
+DROP TABLE IF EXISTS `categories`;
+CREATE TABLE `categories` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) COLLATE utf8_bin NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+
+INSERT INTO `categories` (`id`, `name`) VALUES
+(1,	'anouncement'),
+(2,	'article');
+
+DROP TABLE IF EXISTS `comments`;
+CREATE TABLE `comments` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `post_id` int(11) NOT NULL,
+  `message` varchar(255) COLLATE utf8_bin NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `post_id` (`post_id`),
+  CONSTRAINT `comments_ibfk_1` FOREIGN KEY (`post_id`) REFERENCES `posts` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+
+INSERT INTO `comments` (`id`, `post_id`, `message`) VALUES
+(1,	1,	'great'),
+(2,	1,	'fantastic'),
+(3,	2,	'thank you'),
+(4,	2,	'awesome');
+
+DROP TABLE IF EXISTS `posts`;
+CREATE TABLE `posts` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `user_id` int(11) NOT NULL,
+  `category_id` int(11) NOT NULL,
+  `content` varchar(255) COLLATE utf8_bin NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `category_id` (`category_id`),
+  KEY `user_id` (`user_id`),
+  CONSTRAINT `posts_ibfk_3` FOREIGN KEY (`category_id`) REFERENCES `categories` (`id`),
+  CONSTRAINT `posts_ibfk_4` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+
+INSERT INTO `posts` (`id`, `user_id`, `category_id`, `content`) VALUES
+(1,	1,	1,	'blog started'),
+(2,	1,	2,	'It works!');
+
+DROP TABLE IF EXISTS `post_tags`;
+CREATE TABLE `post_tags` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `post_id` int(11) NOT NULL,
+  `tag_id` int(11) NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `post_id` (`post_id`),
+  KEY `tag_id` (`tag_id`),
+  CONSTRAINT `post_tags_ibfk_1` FOREIGN KEY (`post_id`) REFERENCES `posts` (`id`),
+  CONSTRAINT `post_tags_ibfk_2` FOREIGN KEY (`tag_id`) REFERENCES `tags` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+
+INSERT INTO `post_tags` (`id`, `post_id`, `tag_id`) VALUES
+(1,	1,	1),
+(2,	1,	2),
+(3,	2,	1),
+(4,	2,	2);
+
+DROP TABLE IF EXISTS `tags`;
+CREATE TABLE `tags` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) COLLATE utf8_bin NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+
+INSERT INTO `tags` (`id`, `name`) VALUES
+(1,	'funny'),
+(2,	'important');
+
+DROP TABLE IF EXISTS `users`;
+CREATE TABLE `users` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `username` varchar(255) COLLATE utf8_bin NOT NULL,
+  `password` varchar(255) COLLATE utf8_bin NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
+
+INSERT INTO `users` (`id`, `username`, `password`) VALUES
+(1,	'user1',	'pass1'),
+(2,	'user2',	'pass2');
+
+-- 2015-02-14 17:55:38

client.php

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+<?php
+
+function call($method, $url, $data = false) {
+	$ch = curl_init();
+	curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
+	curl_setopt($ch, CURLOPT_URL, $url);
+	if ($data) {
+		curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+		$headers = array();
+		$headers[] = 'Content-Type: application/json';
+		$headers[] = 'Content-Length: ' . strlen($data);
+		curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+	}
+	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+	return json_decode(curl_exec($ch),true);
+}
+
+function get_objects(&$tables,$table_name,$where_index=false,$match_value=false) {
+	$objects = array();
+	foreach ($tables[$table_name]['records'] as $record) {
+		if ($where_index===false || $record[$where_index]==$match_value) {
+			$object = array();
+			foreach ($tables[$table_name]['columns'] as $index=>$column) {
+				$object[$column] = $record[$index];
+				foreach ($tables as $relation=>$reltable) {
+					foreach ($reltable['relations'] as $key=>$target) {
+						if ($target == "$table_name.$column") {
+							$column_indices = array_flip($reltable['columns']);
+							$object[$relation] = get_objects($tables,$relation,$column_indices[$key],$record[$index]);
+						}
+					}
+				}
+			}
+			$objects[] = $object;
+		}
+	}
+	return $objects;
+}
+
+function get_tree(&$tables) {
+	$tree = array();
+	foreach ($tables as $name=>$table) {
+		if (!isset($table['relations'])) {
+			$tree[$name] = get_objects($tables,$name);
+		}
+	}
+	return $tree;
+}
+
+header('Content-Type: text/plain');
+print_r(get_tree(call('GET','http://localhost/api.php/posts,categories,tags,comments?filter=id:1')));