The new features of PHP 5.6 - Webinar

Transcript

1. PHP 5.6 - The new features 1 Webinar - 9 sep 2014 dinsdag 9 september 14
2. 2 Joshua Thijssen Netherlands Consultant and trainer @ TechAdemy Founder of TechAnalyze.io Author of PHP|Architect's "Mastering the SPL" Blog: http://adayinthelifeof.nl Email: jthijssen@noxlogic.nl Twitter: @jaytaph dinsdag 9 september 14
3. 3 Offers workshops, training and consultancy: PHP Symfony2 Infrastructure + ops dinsdag 9 september 14
4. 4 Tech nalyze Assess technical skills automatically: PHP, Symfony2, Scrum - HTML5/CSS3 Javascript / JQuery dinsdag 9 september 14
5. PHP 5.6 5 http://en.wikipedia.org/wiki/PHP#cite_note-releaseprocess-50 dinsdag 9 september 14
6. PHP 5.6 ➡ PHP 5.3 EOL 14 august 2014 5 http://en.wikipedia.org/wiki/PHP#cite_note-releaseprocess-50 dinsdag 9 september 14
7. PHP 5.6 ➡ PHP 5.3 EOL 14 august 2014 ➡ PHP 5.5 EOL 20 june 2016 5 http://en.wikipedia.org/wiki/PHP#cite_note-releaseprocess-50 dinsdag 9 september 14
8. PHP 5.6 ➡ PHP 5.3 EOL 14 august 2014 ➡ PHP 5.5 EOL 20 june 2016 ➡ PHP 5.6 EOL 28 august 2017 5 http://en.wikipedia.org/wiki/PHP#cite_note-releaseprocess-50 dinsdag 9 september 14
9. How to get it? ➡ http://blog.famillecollet.com/pages/ Config-en ➡ https://launchpad.net/~ondrej/ +archive/ubuntu/php5-5.6 ➡ http://windows.php.net/download/ ➡ http://php-osx.liip.ch/ 6 dinsdag 9 september 14
10. BC breaks? 7 dinsdag 9 september 14
11. BC breaks? ➡ minor 7 dinsdag 9 september 14
12. BC breaks? ➡ minor ➡ SSL Peer verification 7 dinsdag 9 september 14
13. BC breaks? ➡ minor ➡ SSL Peer verification ➡ some array niches 7 dinsdag 9 september 14
14. 1 <?php 2 3 class C 4 { 5 const ONE = 1; 6 7 public $a = array( 8 self::ONE => 'foo', 9 'bar', 10 'baz', 11 ); 12 } 13 14 $c = new C(); 15 var_dump($c->a); 8 PHP 5.5 - 5.6 compatibility break dinsdag 9 september 14
15. 1 <?php 2 3 class C 4 { 5 const ONE = 1; 6 7 public $a = array( 8 self::ONE => 'foo', 9 'bar', 10 'baz', 11 ); 12 } 13 14 $c = new C(); 15 var_dump($c->a); 8 1 array(2) { 2 [0] => 3 string(3) "bar" 4 [1] => 5 string(3) "baz" 6 } php 5.5 PHP 5.5 - 5.6 compatibility break dinsdag 9 september 14
16. 1 <?php 2 3 class C 4 { 5 const ONE = 1; 6 7 public $a = array( 8 self::ONE => 'foo', 9 'bar', 10 'baz', 11 ); 12 } 13 14 $c = new C(); 15 var_dump($c->a); 8 1 array(2) { 2 [0] => 3 string(3) "bar" 4 [1] => 5 string(3) "baz" 6 } php 5.5 1 array(3) { 2 [1]=> 3 string(3) "foo" 4 [2]=> 5 string(3) "bar" 6 [3]=> 7 string(3) "baz" 8 } php 5.6 PHP 5.5 - 5.6 compatibility break dinsdag 9 september 14
17. Upgrading to php5.6 ➡ From 5.5: just read the migration guide ➡ http://php.net/manual/en/ migration56.php ➡ From 5.3: read the 5.4, 5.5 and 5.6 migration guides. 9 dinsdag 9 september 14
18. 10 What's new in PHP 5.6? ➡ Constant scalar expressions ➡ Variadic functions ➡ Argument unpacking ➡ Exponentation ➡ Use function / Use const ➡ GMP operator overloading ➡ __debuginfo() ➡ SSL peer verification dinsdag 9 september 14
19. Constant scalar expressions 11 dinsdag 9 september 14
20. 12 ➡ Use simple expressions to define constants. ➡ Evaluated during compile time, not runtime. dinsdag 9 september 14
21. 1 <?php 2 3 class C 4 { 5 const BASE_LEVEL = 100; 6 7 const CONST_ONE = self::BASE_LEVEL + 1; 8 const CONST_TWO = self::BASE_LEVEL + 2; 9 const CONST_THREE = self::BASE_LEVEL + 3; 10 const CONST_FOUR = self::BASE_LEVEL + 4; 11 } 12 13 Constant expressions dinsdag 9 september 14
22. 1 <?php 2 3 class C 4 { 5 const VALID = 1; 6 const CHECKED = 2; 7 const IN_SYNC = 512; 8 const PRIORITY = 4096; 9 } 10 14 Cleaner bitwise constants dinsdag 9 september 14
23. 1 <?php 2 3 class C 4 { 5 const VALID = 1; 6 const CHECKED = 2; 7 const IN_SYNC = 512; 8 const PRIORITY = 4096; 9 } 10 14 1 <?php 2 3 class C 4 { 5 const VALID = 1 << 0; 6 const CHECKED = 1 << 1; 7 const IN_SYNC = 1 << 9; 8 const PRIORITY = 1 << 12; 9 } Cleaner bitwise constants dinsdag 9 september 14
24. 15 ➡ You can't use: ➡ function calls ➡ variables dinsdag 9 september 14
25. 16 dinsdag 9 september 14
26. 16 ➡ But you can use: dinsdag 9 september 14
27. 16 ➡ But you can use: ➡ __FILE__, __CLASS__, __NAMESPACE__ etc dinsdag 9 september 14
28. 16 ➡ But you can use: ➡ __FILE__, __CLASS__, __NAMESPACE__ etc ➡ Constants from other classes dinsdag 9 september 14
29. 16 ➡ But you can use: ➡ __FILE__, __CLASS__, __NAMESPACE__ etc ➡ Constants from other classes ➡ String literals dinsdag 9 september 14
30. 16 ➡ But you can use: ➡ __FILE__, __CLASS__, __NAMESPACE__ etc ➡ Constants from other classes ➡ String literals ➡ Even the ternary operator dinsdag 9 september 14
31. 17 1 <?php 2 3 class C 4 { 5 const ONE = 1; 6 7 const LINE_ONE = "This is a line " . self::ONE; 8 } Different constant scalar expression examples dinsdag 9 september 14
32. 17 1 <?php 2 3 class C 4 { 5 const ONE = 1; 6 7 const LINE_ONE = "This is a line " . self::ONE; 8 } 1 ?php 2 3 class D 4 { 5 const ONE = 1; 6 } 7 class C 8 { 9 const THREE = D::ONE + 2; 10 } Different constant scalar expression examples dinsdag 9 september 14
33. 1 class C 2 { 3 const LOG_LEVEL_HIGH = 105; 4 5 const LOG_LEVEL_CRITICAL = self::LOG_LEVEL_HIGH >= 100 ? 250 : 100; 6 } 17 1 <?php 2 3 class C 4 { 5 const ONE = 1; 6 7 const LINE_ONE = "This is a line " . self::ONE; 8 } 1 ?php 2 3 class D 4 { 5 const ONE = 1; 6 } 7 class C 8 { 9 const THREE = D::ONE + 2; 10 } Different constant scalar expression examples dinsdag 9 september 14
34. Variadic functions 18 dinsdag 9 september 14
35. 19 dinsdag 9 september 14
36. 19 ➡ It's nothing more than func_get_args() dinsdag 9 september 14
37. 19 ➡ It's nothing more than func_get_args() ➡ Uses '...' before the $argument dinsdag 9 september 14
38. 19 ➡ It's nothing more than func_get_args() ➡ Uses '...' before the $argument ➡ More readable dinsdag 9 september 14
39. 19 ➡ It's nothing more than func_get_args() ➡ Uses '...' before the $argument ➡ More readable ➡ Makes a bit more sense dinsdag 9 september 14
40. 1 <?php 2 3 function foo(... $arguments) { 4 print_r($arguments); 5 } 6 7 foo(1,2,3,4); 8 20 Using variadic arguments dinsdag 9 september 14
41. 1 <?php 2 3 function foo(... $arguments) { 4 print_r($arguments); 5 } 6 7 foo(1,2,3,4); 8 20 1 Array 2 ( 3 [0] => 1 4 [1] => 2 5 [2] => 3 6 [3] => 4 7 ) Using variadic arguments dinsdag 9 september 14
42. 1 function findEarliestDate(\DateTime ... $arguments) { 2 $earliest = null; 3 foreach ($arguments as $dt) { 4 if (! $earliest || $dt < $earliest) { 5 $earliest = $dt; 6 } 7 } 8 9 return $earliest; 10 } 11 12 $d1 = new DateTime('2014-01-31 10:42:29'); 13 $d2 = new DateTime('2014-01-01 00:00:00'); 14 $d3 = new DateTime('2020-04-01 12:13:41'); 15 $d4 = new DateTime('2010-04-01 12:13:41'); 16 $earliest = findEarliestDate(new DateTime(), $d1, $d2, $d3, $d4); 21 Using typehints dinsdag 9 september 14
43. 1 <?php 2 3 function foo($level, $format = "html", ... $arguments) { 4 print "LEVEL: ".$level."\n"; 5 print "FORMAT: ".$format."\n"; 6 print_r($arguments); 7 } 8 9 foo(1, "text", 3, 4); 10 foo(1, "text"); 11 foo(1); 22 Mixing mandatory, optional and variadic arguments Variadic arguments must come last! dinsdag 9 september 14
44. 1 <?php 2 3 function foo(... $args) { 4 print_r($args); 5 } 6 7 $a = [ 1, "foo" => 2, 3, 4 ]; 8 foo(... $a); 23 Cannot use as associative arrays, only numerical arrays dinsdag 9 september 14
45. 1 <?php 2 3 function foo(... $args) { 4 print_r($args); 5 } 6 7 $a = [ 1, "foo" => 2, 3, 4 ]; 8 foo(... $a); 23 Catchable fatal error: Cannot unpack array with string keys Cannot use as associative arrays, only numerical arrays dinsdag 9 september 14
46. 1 <?php 2 3 function foo(... $args) { 4 print_r($args); 5 } 6 7 $a = [ 1, "foo" => 2, 3, 4 ]; 8 foo(... $a); 23 Catchable fatal error: Cannot unpack array with string keys Cannot use as associative arrays, only numerical arrays 1 foo(... array_values($a)); dinsdag 9 september 14
47. 1 <?php 2 3 function foo(... $args) { 4 print_r($args); 5 } 6 7 $a = [ 1, "foo" => 2, 3, 4 ]; 8 foo(... $a); 23 Catchable fatal error: Cannot unpack array with string keys Cannot use as associative arrays, only numerical arrays 1 foo(... array_values($a)); Might break a future named arguments feature dinsdag 9 september 14
48. 24 dinsdag 9 september 14
49. 24 ➡ Does it make sense? dinsdag 9 september 14
50. 24 ➡ Does it make sense? ➡ Automatic type hinting (but only one type) dinsdag 9 september 14
51. 24 ➡ Does it make sense? ➡ Automatic type hinting (but only one type) ➡ Not so much for dynamic data (arrays), but more so for static dinsdag 9 september 14
52. Argument unpacking 25 dinsdag 9 september 14
53. 26 ➡ Related to variadic functions ➡ "unpacks" array or anything that implements traversable into variables, just like list() does. ➡ splat operator ➡ Only usable in function calls dinsdag 9 september 14
54. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 foo(1,2,3); 27 Simple function call with 3 arguments dinsdag 9 september 14
55. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 foo(1,2,3); 27 Simple function call with 3 arguments 1 2 3 dinsdag 9 september 14
56. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3 ]; 10 11 list($tmp1, $tmp2, $tmp3) = $a; 12 foo($tmp1, $tmp2, $tmp3); 28 Using list() to extract elements first dinsdag 9 september 14
57. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3 ]; 10 11 list($tmp1, $tmp2, $tmp3) = $a; 12 foo($tmp1, $tmp2, $tmp3); 28 Using list() to extract elements first 1 2 3 dinsdag 9 september 14
58. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3 ]; 10 foo(... $a); 29 PHP 5.6 Argument unpacking dinsdag 9 september 14
59. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3 ]; 10 foo(... $a); 29 PHP 5.6 Argument unpacking 1 2 3 dinsdag 9 september 14
60. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3, 4, 5 ]; 10 foo(... $a); 30 PHP 5.6 Argument unpacking with overflow dinsdag 9 september 14
61. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3, 4, 5 ]; 10 foo(... $a); 30 PHP 5.6 Argument unpacking with overflow Fills up what needs to be filled, discards the rest dinsdag 9 september 14
62. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3, 4, 5 ]; 10 foo(... $a); 30 PHP 5.6 Argument unpacking with overflow Fills up what needs to be filled, discards the rest 1 2 3 dinsdag 9 september 14
63. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 foo(... $a); 31 PHP 5.6 Argument unpacking with underflow dinsdag 9 september 14
64. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 foo(... $a); 31 PHP 5.6 Argument unpacking with underflow Warning, but fills with NULL dinsdag 9 september 14
65. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 foo(... $a); 31 PHP 5.6 Argument unpacking with underflow Warning, but fills with NULL 1 2 NULL dinsdag 9 september 14
66. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 $b = new ArrayIterator([3, 4]); 11 foo(... $a, ... $b); 32 PHP 5.6 Multiple argument unpacks dinsdag 9 september 14
67. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 $b = new ArrayIterator([3, 4]); 11 foo(... $a, ... $b); 32 PHP 5.6 Multiple argument unpacks 1 2 3 dinsdag 9 september 14
68. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3 ]; 10 foo('foo', 'bar', ... $a); 33 Mixing argument unpacking with normal arguments dinsdag 9 september 14
69. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2, 3 ]; 10 foo('foo', 'bar', ... $a); 33 Mixing argument unpacking with normal arguments foo bar 1 dinsdag 9 september 14
70. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 foo(... $a, 'foo', 'bar'); 34 Mixing argument unpacking with normal arguments dinsdag 9 september 14
71. 1 <?php 2 3 function foo($a, $b, $c) { 4 print_r($a); 5 print_r($b); 6 print_r($c); 7 } 8 9 $a = [ 1, 2 ]; 10 foo(... $a, 'foo', 'bar'); 34 Mixing argument unpacking with normal arguments Fatal error: Cannot use positional argument after argument unpacking dinsdag 9 september 14
72. Exponentation 35 dinsdag 9 september 14
73. 36 ➡ ** operator (and **= as shorthand) ➡ power operator dinsdag 9 september 14
74. 1 <?php 2 3 $a = 2 ** 3; 4 print $a; 37 Power operator 8 dinsdag 9 september 14
75. 38 ➡ This operator is right associative dinsdag 9 september 14
76. 1 <?php 2 3 $a = -2 ** 3; 4 print $a . "\n"; 5 6 $a = -3 ** 2; 7 print $a . "\n"; 39 Associativity -8 // correct -9 // incorrect dinsdag 9 september 14
77. 1 <?php 2 3 $a = (- 2) ** 3; 4 print $a . "\n"; 5 6 $a = (- 3) ** 2; 7 print $a . "\n"; 40 Associativity -8 // correct 9 // correct dinsdag 9 september 14
78. Use function / const 41 dinsdag 9 september 14
79. 42 dinsdag 9 september 14
80. 42 ➡ Import/alias constants and functions into the current namespace. dinsdag 9 september 14
81. 42 ➡ Import/alias constants and functions into the current namespace. ➡ PHP 5.3: classes, interfaces, namespaces dinsdag 9 september 14
82. 42 ➡ Import/alias constants and functions into the current namespace. ➡ PHP 5.3: classes, interfaces, namespaces ➡ PHP 5.6: constants, functions dinsdag 9 september 14
83. 43 ➡ Useful? ➡ IMHO: it's not. dinsdag 9 september 14
84. 44 1 <?php 2 3 namespace Foo; 4 5 function bar($namespace) { 6 print "This is " . __FUNCTION__ . ", and called from namespace ". $namespace. "\n"; 7 } 8 9 namespace Another\Name; 10 11 use function Foo\bar; 12 13 bar(__NAMESPACE__); // Calls the Foo\bar() method Use function dinsdag 9 september 14
85. 44 1 <?php 2 3 namespace Foo; 4 5 function bar($namespace) { 6 print "This is " . __FUNCTION__ . ", and called from namespace ". $namespace. "\n"; 7 } 8 9 namespace Another\Name; 10 11 use function Foo\bar; 12 13 bar(__NAMESPACE__); // Calls the Foo\bar() method Use function This is Foo\bar, and called from namespace Another\Name dinsdag 9 september 14
86. 45 1 <?php 2 3 namespace Foo; 4 5 function bar($namespace) { 6 print "This is " . __FUNCTION__ . ", and called from namespace ". $namespace. "\n"; 7 } 8 9 namespace Another\Name; 10 11 use function Foo\bar as foobar; 12 13 foobar(__NAMESPACE__); // Calls the Foo\bar() method Use function with aliasing dinsdag 9 september 14
87. 45 1 <?php 2 3 namespace Foo; 4 5 function bar($namespace) { 6 print "This is " . __FUNCTION__ . ", and called from namespace ". $namespace. "\n"; 7 } 8 9 namespace Another\Name; 10 11 use function Foo\bar as foobar; 12 13 foobar(__NAMESPACE__); // Calls the Foo\bar() method Use function with aliasing This is Foo\bar, and called from namespace Another\Name dinsdag 9 september 14
88. 46 ➡ You can still define the same functions and use them in your own namespace ➡ Could break things easily dinsdag 9 september 14
89. 47 1 <?php 2 3 namespace Foo; 4 5 function bar($namespace) { 6 print "This is " . __FUNCTION__ . ", and called from namespace ". $namespace. "\n"; 7 } 8 9 namespace Another\Name; 10 11 use function Foo\bar; 12 13 // Can be defined without any problems 14 function bar() { 15 print "Bar!"; 16 } 17 18 bar(__NAMESPACE__); // Calls the Foo\bar() method 19 20 \Another\Name\bar(); // Calls our own bar() method Multiple function defines dinsdag 9 september 14
90. 47 1 <?php 2 3 namespace Foo; 4 5 function bar($namespace) { 6 print "This is " . __FUNCTION__ . ", and called from namespace ". $namespace. "\n"; 7 } 8 9 namespace Another\Name; 10 11 use function Foo\bar; 12 13 // Can be defined without any problems 14 function bar() { 15 print "Bar!"; 16 } 17 18 bar(__NAMESPACE__); // Calls the Foo\bar() method 19 20 \Another\Name\bar(); // Calls our own bar() method Multiple function defines This is Foo\bar, and called from namespace Another\Name Bar! dinsdag 9 september 14
91. ➡ Just like regular functions, it automatically falls back to the global namespace when the function is not found. ➡ RFC says otherwise 48 dinsdag 9 september 14
92. 49 1 <?php 2 3 // Foo namespace 4 namespace Foo { 5 6 function strlen($str) 7 { 8 return "The length of the string is: " . \strlen($str) . "\n"; 9 } 10 11 } 12 13 14 // Another\Name namespace 15 namespace Another\Name { 16 17 use function Foo\strlen; 18 19 print strlen(__NAMESPACE__); // Calls \Foo\strlen() function 20 21 } Fallbacks dinsdag 9 september 14
93. 50 1 <?php 2 3 // Foo namespace 4 namespace Foo { 5 6 function strlen($str) 7 { 8 return "The length of the string is: " . \strlen($str) . "\n"; 9 } 10 11 } 12 13 14 // Another\Name namespace 15 namespace Another\Name { 16 17 print strlen(__NAMESPACE__); // Falls back to the global strlen() function 18 19 } Fallbacks dinsdag 9 september 14
94. 51 1 <?php 2 3 // Global namespace 4 namespace { 5 6 function strlength($str) 7 { 8 return "Hi there. This is the global strlength() function: " . strlen($str) . "\n"; 9 } 10 11 } 12 13 // Foo namespace 14 namespace Foo { 15 16 function strlength($str) 17 { 18 return "The length of the string is: " . \strlen($str) . "\n"; 19 } 20 21 } 22 23 24 // Another\Name namespace 25 namespace Another\Name { 26 27 print strlength(__NAMESPACE__); // Falls back to the the \strlength() method 28 29 } Automatic fallback to global namespace dinsdag 9 september 14
95. GMP Overloading 52 dinsdag 9 september 14
96. 53 ➡ New concept in PHP: Operator overloading ➡ Only GMP extension ➡ More to follow, most likely dinsdag 9 september 14
97. 1 <?php 2 3 $a = 1 + 2; 4 var_dump($a); // int(3) 5 6 $a = 1 + 1.1; 7 var_dump($a); // float(2.1) 8 9 $a = "foo" + 1; 10 var_dump($a); // int(1) 11 12 $a = 1 + "foo"; 13 var_dump($a); // int(1) 14 15 $a = new Color("yellow") + new Color("blue"); 16 var_dump($a); // Color("green") ??? 54 PHP "acts" differently based on operands given dinsdag 9 september 14
98. 1 <?php 2 3 $a = gmp_init(1) + gmp_init(5); 4 var_dump($a); 55 object(GMP)#3 (1) { ["num"]=> string(1) "6" } GMP "overloads" the operators dinsdag 9 september 14
99. 1 <?php 2 3 $a = gmp_init(1) + 2; 4 var_dump($a); 56 object(GMP)#3 (1) { ["num"]=> string(1) "3" } GMP "overloads" the operators dinsdag 9 september 14
100. 1 <?php 2 3 $a = gmp_init(1) + 2; 4 var_dump($a); // GMP(3) 5 6 $a = 8 + gmp_init(1); 7 var_dump($a); // GMP(9) 8 9 $a = 8.6 + gmp_init(1); 10 var_dump($a); // Unable to convert variable to GMP 11 12 $a = true + gmp_init(1); 13 var_dump($a); // GMP(2) 14 15 $a = false + gmp_init(1); 16 var_dump($a); // GMP(1) 57 GMP can convert only INT and BOOL, not FLOAT :( dinsdag 9 september 14
101. 58 ➡ GMP operator overloading is not meant to start userland overloading (opr_add, coerce etc) ➡ It's just to make GMP usage easier dinsdag 9 september 14
102. 1 $result = gmp_mod( 2 gmp_add( 3 gmp_mul($c0, gmp_mul($ms0, gmp_invert($ms0, $n0))), 4 gmp_add( 5 gmp_mul($c1, gmp_mul($ms1, gmp_invert($ms1, $n1))), 6 gmp_mul($c2, gmp_mul($ms2, gmp_invert($ms2, $n2))) 7 ) 8 ), 9 gmp_mul($n0, gmp_mul($n1, $n2)) 10 ); 11 12 $result = ( 13 $c0 * $ms0 * gmp_invert($ms0, $n0) 14 + $c1 * $ms1 * gmp_invert($ms1, $n1) 15 + $c2 * $ms2 * gmp_invert($ms2, $n2) 16 ) % ($n0 * $n1 * $n2); 59 Clearer way to deal with GMP numbers https://wiki.php.net/rfc/operator_overloading_gmp dinsdag 9 september 14
103. __debuginfo 60 dinsdag 9 september 14
104. 61 ➡ New magic method ➡ Allows to control the output of var_dump() dinsdag 9 september 14
105. 1 <?php 2 3 class Foo { 4 protected $file; 5 6 function __construct($path = null) { 7 if ($path != null) { 8 $this->file = fopen($path, "r"); 9 } 10 } 11 12 } 13 14 $foo = new Foo("/etc/passwd"); 15 print_r($foo); 62 Simple class with file resource Foo Object ( [file:protected] => Resource id #5 ) dinsdag 9 september 14
106. 1 class Foo { 2 protected $file; 3 4 function __construct($path = null) { 5 if ($path != null) { 6 $this->file = fopen($path, "r"); 7 } 8 } 9 10 function __debuginfo() { 11 $debuginfo = array(); 12 13 $debuginfo['opened'] = $this->file ? "true" : "false"; 14 15 if ($this->file) { 16 $debuginfo['file'] = stream_get_meta_data($this->file); 17 } 18 return $debuginfo; 19 } 20 21 } 22 23 $foo = new Foo("/etc/passwd"); 24 print_r($foo); 25 26 $bar = new Foo(); 27 print_r($bar); 63 Simple class with file resource and __debuginfo dinsdag 9 september 14
107. 1 class Foo { 2 protected $file; 3 4 function __construct($path = null) { 5 if ($path != null) { 6 $this->file = fopen($path, "r"); 7 } 8 } 9 10 function __debuginfo() { 11 $debuginfo = array(); 12 13 $debuginfo['opened'] = $this->file ? "true" : "false"; 14 15 if ($this->file) { 16 $debuginfo['file'] = stream_get_meta_data($this->file); 17 } 18 return $debuginfo; 19 } 20 21 } 22 23 $foo = new Foo("/etc/passwd"); 24 print_r($foo); 25 26 $bar = new Foo(); 27 print_r($bar); 63 Simple class with file resource and __debuginfo Foo Object ( [opened] => true [file] => Array ( [wrapper_type] => plainfile [stream_type] => STDIO [mode] => r [unread_bytes] => 0 [seekable] => 1 [uri] => /etc/passwd [timed_out] => [blocked] => 1 [eof] => ) ) Foo Object ( [opened] => false ) dinsdag 9 september 14
108. SSL Peer verification 64 dinsdag 9 september 14
109. 65 ➡ https://wiki.php.net/rfc/operator_overloading_gmp ➡ http://php.net/manual/en/migration56.php ➡ http://php.net/manual/en/migration56.new-features.php ➡ https://wiki.php.net/rfc/const_scalar_exprs ➡ https://wiki.php.net/rfc/variadics Further reading materials: ➡ http://phpdancer.blogspot.nl/p/php-wallpapers.html dinsdag 9 september 14
110. 66 Find me on twitter: @jaytaph Find me for development and training: www.noxlogic.nl Find me on email: jthijssen@noxlogic.nl Find me for blogs: www.adayinthelifeof.nl Thanks for your attention https://joind.in/event/view/2584 Please leave feedback at dinsdag 9 september 14