The new features of PHP 7
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PHP 7, released on December 3, 2015, significantly improves performance with features like scalar type declarations, anonymous classes, and new operators, while maintaining broad compatibility with existing PHP applications. Major companies like Badoo and Tumblr reported substantial savings and performance enhancements after migrating to PHP 7. The presentation highlights the evolution of PHP, its ecosystem, and key improvements over previous versions.
![BENCHMARKBENCHMARK
$a = [];
for ($i = 0; $i < 1000000; $i++) {
$a[$i] = ["hello"];
}
echo memory_get_usage(true);
PHP 5.6 PHP 7
Memory Usage 428 MB 33 MB
Execution time 0.49 sec 0.06 sec](https://image.slidesharecdn.com/php7zimueltalk-161129164310/85/The-new-features-of-PHP-7-10-320.jpg)
![RETURNTYPEDECLARATIONSRETURNTYPEDECLARATIONS
function foo(): array {
return [];
}
function bar(): DateTime {
return null; // invalid
}
More information: PHP documentation](https://image.slidesharecdn.com/php7zimueltalk-161129164310/85/The-new-features-of-PHP-7-14-320.jpg)
![NULLCOALESCINGNULLCOALESCING
?? operator
// Fetches the value of $_GET['user'] and returns 'nobody'
// if it does not exist.
$username = $_GET['user'] ?? 'nobody';
// This is equivalent to:
$username = isset($_GET['user']) ? $_GET['user'] : 'nobody';
// Coalescing can be chained
$username = $_GET['user'] ?? $_POST['user'] ?? 'nobody';](https://image.slidesharecdn.com/php7zimueltalk-161129164310/85/The-new-features-of-PHP-7-19-320.jpg)
![THANKS!THANKS!
Contact me: enrico.zimuel [at] roguewave.com
Blog and web site: www.zimuel.it
Follow me: @ezimuel
This work is licensed under a
.
I used to make this presentation.
Creative Commons Attribution-ShareAlike 3.0 Unported License
reveal.js](https://image.slidesharecdn.com/php7zimueltalk-161129164310/85/The-new-features-of-PHP-7-23-320.jpg)
The new features of PHP 7
- 1. THENEWFEATURESOFPHP7THENEWFEATURESOFPHP7 by - Senior Software Engineer , a Rogue Wave Company (USA) , Milan, 25th Nov. 2016 Enrico Zimuel @ezimuel Zend Technologies Codemotion
- 3. PHPPHP PHP: Hypertext Preprocessor The most popular server-side language: PHP is used by 82.3% of all the websites (source: ) Used by Facebook, Wikipedia, Yahoo, Etsy, Flickr, Digg, etc 21 years of usage, since 1995 Full OOP support since PHP 5 w3techs.com
- 4. PHPECOSYSTEMPHPECOSYSTEM CMS: , , , etc E-commerce: , , , etc CRM: , , , , etc Wiki: , , , etc Framework: , , , etc Drupal Wordpress Joomla Magento OpenCart PrestaShop CiviCRM SugarCRM Vtiger Zurmo DokuWiki MediaWiki PmWiki Laravel Symfony Zend Framework
- 5. PHP7PHP7 Released: 3 December 2015 Last major was , 13 July 2004 (11 years!)PHP 5 Last release is (10 Nov 2016)7.0.13
- 6. PHP6?PHP6? Unicode support at the core language level Not released, project is abandoned
- 7. PHPDEADLINESPHPDEADLINES Version Release Supported until 5.3 30 June 2009 14 August 2014 5.4 1 March 2012 3 September 2015 5.5 20 June 2013 21 July 2016 5.6 28 August 2014 31 December 2018 7.0 3 December 2015 3 December 2018 7.1 December 2016? 3 years
- 8. PHP7INANUTSHELLPHP7INANUTSHELL Great performance (thanks to ) Return/Scalar Type Declarations Cryptographic secure pseudo-random number generator (CSPRNG) Anonymous Classes Combined Comparison (Spaceship) Operator Null coalescing operator New Error hierarchy PHPNG
- 9. PERFORMANCEPERFORMANCE , PHP Next GenerationPHPNG Project by Dmitry Stogov ( )Zend New data structure management in the PHP engine Great performance improvement!
- 10. BENCHMARKBENCHMARK $a = []; for ($i = 0; $i < 1000000; $i++) { $a[$i] = ["hello"]; } echo memory_get_usage(true); PHP 5.6 PHP 7 Memory Usage 428 MB 33 MB Execution time 0.49 sec 0.06 sec
- 11. OTHERLANGUAGESOTHERLANGUAGES PHP 7 is also faster than !Python 3
- 12. PHP 7 is also faster than !Python 3 WORDPRESSWORDPRESS
- 13. CASESTUDIESCASESTUDIES Badoo saved one million dollars switching to PHP 7 ( ) Tumblr reduced the latency and CPU load by half moving to PHP 7 ( ) Dailymotion handles twice more traffic with same infrastructure switching to PHP 7 ( ) source source source
- 14. RETURNTYPEDECLARATIONSRETURNTYPEDECLARATIONS function foo(): array { return []; } function bar(): DateTime { return null; // invalid } More information: PHP documentation
- 15. SCALARTYPEDECLARATIONSSCALARTYPEDECLARATIONS declare(strict_types=1); function sendHttpStatus(int $statusCode, string $message) { header('HTTP/1.0 ' .$statusCode. ' ' .$message); } sendHttpStatus(404, "File Not Found"); // ok sendHttpStatus("403", "OK"); // fatal error function add(float $a, float $b): float { return $a + $b; } add(1, 2); // float(3) More information: PHP documentation
- 16. CSPRNGCSPRNG Cryptographically secure pseudo-random number generators // generates a random number between 1 and 100 $num = random_int(1,100); // generates a random string of 1 Kb $bytes = random_bytes(1024); More information: PHP documentation
- 17. ANONYMOUSCLASSESANONYMOUSCLASSES /* return an anonymous class */ return new class($controller) implements Page { public function __construct($controller) { /* ... */ } /* ... */ }; class Foo {} $child = new class extends Foo {}; var_dump($child instanceof Foo); // true More information: PHP documentation
- 18. SPACESHIPOPERATORSPACESHIPOPERATOR A <=> B 0 if A == B, 1 if A > B, -1 if A < B echo 1 <=> 1; // 0 echo 1 <=> 2; // -1 echo 2 <=> 1; // 1 echo "a" <=> "a"; // 0 echo "a" <=> "b"; // -1 echo "b" <=> "a"; // 1
- 19. NULLCOALESCINGNULLCOALESCING ?? operator // Fetches the value of $_GET['user'] and returns 'nobody' // if it does not exist. $username = $_GET['user'] ?? 'nobody'; // This is equivalent to: $username = isset($_GET['user']) ? $_GET['user'] : 'nobody'; // Coalescing can be chained $username = $_GET['user'] ?? $_POST['user'] ?? 'nobody';
- 20. NEWERRORHIERARCHYNEWERRORHIERARCHY Throwable: Error, Exception function call_method($obj) { $obj->method(); } try { call_method(null); // oops! } catch (Error $e) { printf ("Error: %sn", $e->getMessage()); } catch (Exception $e) { printf ("Exception: %sn", $e->getMessage()); } More information: PHP documentation
- 21. MUCHMORE...MUCHMORE... Consistent 64-bit support Fix list() behavior inconsistency Filtered unserialize() Group use declarations Closure::call() Expectations ... Check the at php.netPHP 7 new features
- 22. PHP7.1PHP7.1 Nullable types Void return types Deprecation of Mcrypt ext Support of in OpenSSL Support class constant visibility Iterable pseudo-type ... Authenticated Encryption Check the at php.netPHP 7.1 new features
- 23. THANKS!THANKS! Contact me: enrico.zimuel [at] roguewave.com Blog and web site: www.zimuel.it Follow me: @ezimuel This work is licensed under a . I used to make this presentation. Creative Commons Attribution-ShareAlike 3.0 Unported License reveal.js