This document introduces PHPLinq, a PHP library that provides Language Integrated Query (LINQ) capabilities. It allows querying different data sources like objects, databases, XML, and Azure using a common LINQ-like syntax. The document provides an overview of LINQ, demonstrates basic PHPLinq usage with examples, and discusses available PHPLinq providers for different data sources. It encourages questions and provides contact details for the author.

1. A lap around PHPLinqIntroducing PHP Language Integrated QueryMaarten Balliauwhttp://blog.maartenballiauw.behttp://twitter.com/maartenballiauwmaarten@maartenballiauw.be

2. Who am I?Maarten BalliauwAntwerp, Belgiumwww.realdolmen.comFocus on webASP.NET, ASP.NET MVC, PHP, Azure, VSTS, …MVP ASP.NEThttp://blog.maartenballiauw.behttp://twitter.com/maartenballiauw

3. Agenda LINQ?

4. PHPLINQ?

5. Demo

6. Q&ALINQLanguageINtegrated Query.NET world (.NET 3.5)1 query languageMultiple providersLanguageextensionsAnonymous typesObject initializerLambdaexpressions

7. LINQ – Example…int[] someNumbers = new int[] { 1, 2, 3, 4, 5 };var results = from x in someNumberswhere x < 3 select new { Number = x };foreach (var result in results) {Console.WriteLine(result.Number);}

8. PHPLinqPHP LanguageIntegrated QueryPHP userlandlibrary1 query languageMultiple providersFeaturingAnonymous typesObject initializerLambdaexpressions

9. PHPLinq – Example…$someNumbers = newarray(1, 2, 3, 4, 5);$results = from('$x')->in($someNumbers) ->where('$x => $x < 3') ->select('new { "Number" => $x }');foreach ($results as $result) { print($result->Number);}

10. PHPLinq providers

11. LinqToObjects$employees = array( new Employee(1, 1, 5, 'Maarten', 'maarten@example.com', 24), new Employee(2, 1, 5, 'Paul', 'paul@example.com', 30), new Employee(3, 2, 5, 'Bill', 'bill.a@example.com', 29), new Employee(4, 3, 5, 'Bill', 'bill.g@example.com', 28), new Employee(5, 2, 0, 'Xavier', 'xavier@example.com', 40));$result = from('$employee')->in($employees) ->where('$employee => substr($employee->Name, 0, 4) == "Bill"') ->select('new { "Name" => $employee->Name, "Email" => $employee->Email }');Array( [0] => stdClass Object ( [Name] => Bill [Email] => bill.a@example.com ) [1] => stdClass Object ( [Name] => Bill [Email] => bill.g@example.com ))

12. LinqToZendDbclass EmployeeTable extends Zend_Db_Table { protected $_name = 'employees'; // table name protected $_primary = 'Id';}$employeeTable = new EmployeeTable(array('db' => $db));$employeeTable->setRowClass('Employee');$result = from('$employee')->in($employeeTable) ->where('$employee => substr($employee->Name, 0, 4) == "Bill"') ->select('new { "Name" => $employee->Name, "Email" => $employee->Email }');Array( [0] => stdClass Object ( [Name] => Bill [Email] => bill.a@example.com ) [1] => stdClass Object ( [Name] => Bill [Email] => bill.g@example.com ))

13. LinqToZendDb – Provider model$result = from('$employee')->in($employeeTable) ->where('$employee => trim($employee->Name) == "Bill"') ->select('$employee->Name');Query on SQLiteSELECT "$employee".* FROM "employees" AS "$employee"WHERE (TRIM('$employee'."Name") = "Bill")Query on Microsoft SQL ServerSELECT "$employee".* FROM "employees" AS "$employee"WHERE (LTRIM(RTRIM('$employee'."Name")) = "Bill")

14. LinqToAzure$result = from('$employee')->in( array($azCli, 'employees', 'Employee') ) ->where('$employee => $employee->Name == "Bill"') ->select('new { "Name" => $employee->Name, "Email" => $employee->Email }');Array( [0] => stdClass Object ( [Name] => Bill [Email] => bill.a@example.com ) [1] => stdClass Object ( [Name] => Bill [Email] => bill.g@example.com ))