README

This library required when you need to create MySQL Query using classes and arrays. This Library only for creating Select Query For MySQL Databse.

i have used SqlFormatter Library built by Jeremy Dorn jeremy@jeremydorn.com to format query in browser.

Feel Free to comment and if any one want to countribute then please contact me Hardeep Singh Contact me at hardeepvicky1@gmail.com OR at hardeep.singh417@gmail.com

Installation

Install Library using composer

  composer require hardeep-vicky/php-query-builder

Basic Usage/Examples

• First include composer's autoload file.
• QuerySelect class is main class for generating query which accpet a argument of class Table
• Table class accept three arguments
  • First Table name (required)
  • Second Alias (optional)
  • primary field name (optional) (defaull id)

require_once './vendor/autoload.php';

use HardeepVicky\QueryBuilder\QuerySelect;
use HardeepVicky\QueryBuilder\Table;
use HardeepVicky\QueryBuilder\Join;
use HardeepVicky\QueryBuilder\Condition;
use HardeepVicky\QueryBuilder\SqlFormatter;

$querySelect = new QuerySelect(new Table("countries"));
# OR
$querySelect = new QuerySelect(new Table("countries", "C"));
# OR 
$querySelect = new QuerySelect(new Table("countries", "C", "id"));

$querySelect->setWhere(
        Condition::init("OR")->add("C.name", "%india%", "like")
);

$q = $querySelect->get();

echo $q;

Output

SELECT C.* FROM countries AS C WHERE (C.name like '%india%')

Use with Complex Conditions

require_once './vendor/autoload.php';
use HardeepVicky\QueryBuilder\QuerySelect;
use HardeepVicky\QueryBuilder\Table;
use HardeepVicky\QueryBuilder\Join;
use HardeepVicky\QueryBuilder\Condition;
use HardeepVicky\QueryBuilder\SqlFormatter;

$querySelect = new QuerySelect(new Table("countries", "C"));

$querySelect->setWhere(
        Condition::init("AND")
                ->add("region", "Asia")
                ->addCondition(
                        Condition::init("OR")->add("C.name", "%india%", "like")->add("C.name", "%pakistan%", "like")
                )
);

$q = $querySelect->get();

echo $q;

Output

SELECT
  C.*
FROM
  `countries` AS C
WHERE
  (
    region = 'Asia'
    AND (
        C.name like '%india%' OR C.name like '%pakistan%'
    )
)

Example with Join

$querySelect = new QuerySelect(new Table("countries", "C"));

$join_state = new Join(Join::INNER, new Table("states", "S"), "country_id");

$join_state->field("name");

$querySelect->join($join_state);

$querySelect->setWhere(
        Condition::init("AND")->add("C.name", "india")
);

$querySelect->setLimit(10);

$q = $querySelect->get();

echo SqlFormatter::format($q);

Output

SELECT 
  C.*, 
  S.name 
FROM 
  `countries` AS C 
  INNER JOIN `states` AS S ON S.country_id = C.id 
WHERE 
  (C.name = 'india') 
LIMIT 
  10

In above example we use Join class , Join class construct function is below

class Join
{
    const INNER = 'INNER JOIN';
    const LEFT = 'LEFT JOIN';
    const OUTER = 'OUTER JOIN';
  
    /**
     * @param String $join_type
     * @param Table $table
     * @param String $foreign_field
     */
    public function __construct(String $join_type, Table $table, String $foreign_field)
    {

And we call

$join_state->field("name"); 

this statement make select name field of states table. This function field() has three option

$join_state->field("name");   //output S.name
$join_state->field("name", "state_name");  //output S.name as state_name
$join_state->field("name", null, true);  //output S.name as S__name

Above options also avialable in QuerySelect class

$querySelect->field("name");   //output S.name
$querySelect->field("name", "country_name");  //output C.name as country_name
$querySelect->field("name", null, true);  //output C.name as C__name

you can set also no field as below

$join_state->noField();

$querySelect->noField();

this statement make no field selction in query

Multiple Join

$querySelect = new QuerySelect(new Table("countries", "Country"));

$join_city = new Join(Join::LEFT, new Table("cities", "City"), "state_id");
$join_city->field("name");

$join_state = new Join(Join::LEFT, new Table("states", "State"), "country_id");
$join_state->join($join_city);
$join_state->field("name");

$querySelect->join($join_state);

$querySelect->field("id");
$querySelect->field("name");  
  
$q = $querySelect->get();

Output

SELECT 
  Country.id, 
  Country.name, 
  State.name, 
  City.name 
FROM 
  `countries` AS Country 
  LEFT JOIN `states` AS State ON State.country_id = Country.id 
  LEFT JOIN `cities` AS City ON City.state_id = State.id

You can get query without alias as below

$querySelect = new QuerySelect(new Table("countries"));

$join_city = new Join(Join::LEFT, new Table("cities"), "state_id");
$join_city->field("name");

$join_state = new Join(Join::LEFT, new Table("states"), "country_id");
$join_state->join($join_city);
$join_state->field("name");

$querySelect->join($join_state);

$querySelect->field("id");
$querySelect->field("name");  
  
$q = $querySelect->get();

Output

SELECT 
  `countries`.id, 
  `countries`.name, 
  `states`.name, 
  `cities`.name 
FROM 
  `countries` 
  LEFT JOIN `states` ON `states`.country_id = `countries`.id 
  LEFT JOIN `cities` ON `cities`.state_id = `states`.id

Join With Condition

We have two options here

$join_city->setWhere(
        Condition::init("OR")
                ->add("name", "%ludhiana%", "like")
                ->add("name", "%delhi%", "like")

);

Output

SELECT 
  C.name, 
  S.name, 
  City.name 
FROM 
  `countries` AS C 
  INNER JOIN `states` AS S ON S.country_id = C.id 
  INNER JOIN `cities` AS City ON City.state_id = S.id AND (
      City.name like '%ludhiana%' OR City.name like '%delhi%'
  )

we can concat raw where string as below

$join_city->addRawWhere("AND (S.name = City.name)");

Output

SELECT 
  C.name AS C__name, 
  S.name AS S__name, 
  City.name AS City__name 
FROM 
  `countries` AS C 
  INNER JOIN `states` AS S ON S.country_id = C.id 
  INNER JOIN `cities` AS City ON City.state_id = S.id AND (S.name = City.name)

Another Examples are below

$querySelect = new QuerySelect(new Table("countries"));

        $join_state = new Join(Join::LEFT, new Table("states", "S"), "country_id");
        $join_state->noField();

$querySelect->join($join_state);

$querySelect->field("name");

$querySelect->addCustomField("COUNT(S.id) AS state_count");

$querySelect->groupBy("countries.id");

$querySelect->setHaving(Condition::init("AND")->add("state_count", 5, ">"));

$querySelect->order("state_count", "desc");

$querySelect->setLimit(10);
  
$q = $querySelect->get();

echo SqlFormatter::format($q);

In above example we use custom field $querySelect->addCustomField("COUNT(S.id) AS state_count"); and conditions in having clause $querySelect->setHaving(Condition::init("AND")->add("state_count", 5, ">"));

Output

SELECT 
  `countries`.name, 
  COUNT(S.id) AS state_count 
FROM 
  `countries` 
  LEFT JOIN `states` AS S ON S.country_id = `countries`.id 
GROUP BY 
  countries.id 
HAVING 
  (state_count > 5) 
ORDER BY 
  state_count DESC 
LIMIT 
  10

$querySelect = new QuerySelect(new Table("countries", "C"));

                $join_city = new Join(Join::INNER, new Table("cities", "City"), "state_id");
                $join_city->noField();
                $join_city->setWhere(Condition::init("OR"));
                $join_city->addRawWhere("AND (S.name = City.name)");

        $join_state = new Join(Join::INNER, new Table("states", "S"), "country_id");
        $join_state->noField();
        $join_state->join($join_city);

$querySelect->join($join_state);

$querySelect->field("name", null, true);

$querySelect->addCustomField("COUNT(S.name) as same_name_count");

$querySelect->groupBy("C.id");

$querySelect->order("same_name_count", "DESC");

$querySelect->setHaving(Condition::init("AND")->add("C__name", "%india%", "like"));
  
$q = $querySelect->get();

Output

SELECT 
  C.name AS C__name, 
  COUNT(S.name) as same_name_count 
FROM 
  `countries` AS C 
  INNER JOIN `states` AS S ON S.country_id = C.id 
  INNER JOIN `cities` AS City ON City.state_id = S.id 
  AND (S.name = City.name) 
GROUP BY 
  C.id 
HAVING 
  (C__name like '%india%') 
ORDER BY 
  same_name_count DESC

🚀 About Me

I'm a PHP Developer creating web applications and php libraries since 2014. Contact me at hardeepvicky1@gmail.com OR at hardeep.singh417@gmail.com

License

MIT

Authors

• Hardeep Singh