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![A classic PHP pattern: $saved = []; foreach($items as $item) { if ($item->size > 5) { $saved[] = $item; } } $display_titles = []; foreach($saved as $item) { $display_titles[] = ucfirst($item->title); } foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-21-2048.jpg)
![array_map // array_map ( callable $callback , array $array1 [, array $... ] ) $start = [1, 2, 3, 4, 5]; $end = array_map(function ($i) { return $i * 2; }, $start); // [2, 4, 6, 8, 10] @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-26-2048.jpg)
![array_map makes this code... $start = [1, 2, 3, 4, 5]; $end = []; foreach($start as $i) { $end[] = $i * 2; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-27-2048.jpg)
![Into this $start = [1, 2, 3, 4, 5]; $end = array_map(function ($i) { return $i * 2; }, $start); @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-28-2048.jpg)
![array_filter // array_filter ( array $array [, callable $callback [, int $flag = 0 ]] ) $start = [1, 2, 3, 4, 5, 6]; $even = array_filter($start, function ($i) { return $i % 2 === 0; }); // [2, 4, 6] @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-29-2048.jpg)
![array_filter makes this code... $start = [1, 2, 3, 4, 5, 6]; $even = []; foreach($start as $i) { if ($i % 2 === 0) { $even[] = $i; } } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-30-2048.jpg)
![Into this $start = [1, 2, 3, 4, 5, 6]; $even = array_filter($start, function ($i) { return $i % 2 === 0; }); @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-31-2048.jpg)
![All forms can be used with array_map, etc $names = ['David', 'Megan', 'Sierra']; array_map('hello', $names); array_map($hello, $names); array_map('Namer::hello', $names); array_map(['Namer', 'hello'], $names); $namer = new Namer; array_map([$namer, 'hello'], $names); @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-37-2048.jpg)
![Remember this? $saved = []; foreach($items as $item) { if ($item->size > 5) { $saved[] = $item; } } $display_titles = []; foreach($saved as $item) { $display_titles[] = ucfirst($item->title); } foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-46-2048.jpg)
![Let's transform filter in for foreach $saved = array_filter($items, function($i) { return $item->size > 5; }); $display_titles = []; foreach($saved as $item) { $display_titles[] = ucfirst($item->title); } foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-47-2048.jpg)
![Without FP $posts = Posts::all(); $goodPosts = []; foreach($posts as $post) { if ($post->score > 500) { $goodPosts[] = $post; } } $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-59-2048.jpg)
![Refactor 1 - filter out posts $goodPosts = Posts::all() ->filter(function($post) { return $post->score > 500 }); $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-60-2048.jpg)
![Refactor 2 - collect good comments on good posts $goodComments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->map(function($p) { return $post->comments; }) ->flatten() ->filter(function($c) { return $c->score > 100; }); $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-62-2048.jpg)
![Refactor 2 - collect good comments on good posts (again) $goodComments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }); $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-64-2048.jpg)
![Refactor 3 - create new set with a map $scoredGoodCommments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }) ->map(function($c) { return [ 'score' => $c->score, 'fluency' => FluentScorer::score($c->content), 'comment' => $c, 'post' => $c->post, ]; }); @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-65-2048.jpg)
![Did it get better? (original) $posts = Posts::all(); $goodPosts = []; foreach($posts as $post) { if ($post->score > 500) { $goodPosts[] = $post; } } $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-66-2048.jpg)
![Did it get better? (final) $scoredGoodCommments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }) ->map(function($c) { return [ 'score' => $c->score, 'fluency' => FluentScorer::score($c->content), 'comment' => $c, 'post' => $c->post, ]; }); @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-67-2048.jpg)
![Again Did it get better? (original) $posts = Posts::all(); $goodPosts = []; foreach($posts as $post) { if ($post->score > 500) { $goodPosts[] = $post; } } $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-74-2048.jpg)
![Did it get better? (final) $scoredGoodCommments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }) ->map(function($c) { return [ 'score' => $c->score, 'fluency' => FluentScorer::score($c->content), 'comment' => $c, 'post' => $c->post, ]; }); @davidbhayes from ThoughtfulCode.com](https://image.slidesharecdn.com/banishingloops-180815232719/75/Banishing-Loops-with-Functional-Programming-in-PHP-75-2048.jpg)
Uploaded byDavid Hayes
Banishing Loops with Functional Programming in PHP
The document discusses the principles and benefits of functional programming in PHP, highlighting practical substitutions for traditional code structures. It emphasizes the use of pure functions, array manipulation functions like array_map and array_filter, and the advantages of chains and pipelines for improved readability. The author contrasts legacy procedural code with modern functional approaches, advocating for clearer and more maintainable code structures.
Banishing Loops with Functional Programming in PHP
- 1. Banishing Loops with Functional PHP @davidbhayes @davidbhayesfrom ThoughtfulCode.com
- 2. Goals To understand... 1. whatfunctional programming is 2. practical substitutions we can make in our code using it 3. why it can be beneficial to make these changes @davidbhayes from ThoughtfulCode.com
- 3. In the beginning,there was code. And that was all... @davidbhayes from ThoughtfulCode.com
- 4. As time goeson, we learn that maintaining code is hard @davidbhayes from ThoughtfulCode.com
- 5. To ponder... Why is maintaining codehard? @davidbhayes from ThoughtfulCode.com
- 6. Today, there arebasically Three Paradigms @davidbhayes from ThoughtfulCode.com
- 7. Procedural Code • Youtell the computer exactly what to do • You might have "functions" which contain your common procedures @davidbhayes from ThoughtfulCode.com
- 8. OO Code • Youuse the inherent human understanding of objects to make code more comprehensible • In PHP, you use classes to define blueprint for instances of objects @davidbhayes from ThoughtfulCode.com
- 9. Functional Code • Mathematical-functionshave magic powers, pure functions are more unitary than procedures • All pure functions are stateless and create only their own output @davidbhayes from ThoughtfulCode.com
- 10. Functional Programming in abit more depth @davidbhayes from ThoughtfulCode.com
- 11. Pure functions... Read onlytheir inputs @davidbhayes from ThoughtfulCode.com
- 12. Pure functions... Affect onlytheir outputs @davidbhayes from ThoughtfulCode.com
- 13. Only touching inputsand outputs means • No DB changes • No files created • No reading of global state (like time) @davidbhayes from ThoughtfulCode.com
- 14. It also means... •Functions are completely idempotent • Functions can be composed • Rerunning a function for debugging requires only knowing its name and parameters @davidbhayes from ThoughtfulCode.com
- 15. Functional programming languages •Haskell • Elm • Clojure • Scala (sort of) • JavaScript (sort of) @davidbhayes from ThoughtfulCode.com
- 16. Now, Lets TalkAbout PHP @davidbhayes from ThoughtfulCode.com
- 17. Most "classic" or"legacy" PHP is procedural @davidbhayes from ThoughtfulCode.com
- 18. Most modern PHPcode is object-oriented with procedural processes inside @davidbhayes from ThoughtfulCode.com
- 19. I love foreach @davidbhayesfrom ThoughtfulCode.com
- 20. foreach is fundamentally procedural (yes,even inside an object method) @davidbhayes from ThoughtfulCode.com
- 21. A classic PHPpattern: $saved = []; foreach($items as $item) { if ($item->size > 5) { $saved[] = $item; } } $display_titles = []; foreach($saved as $item) { $display_titles[] = ucfirst($item->title); } foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com
- 22. How Does Functional Help? @davidbhayesfrom ThoughtfulCode.com
- 23. What's map? Transform eachentity in a list using a given function @davidbhayes from ThoughtfulCode.com
- 24. What's filter? Keep itemsin a list if a function return true when run on an item @davidbhayes from ThoughtfulCode.com
- 25. Getting Practical FP inPHP @davidbhayes from ThoughtfulCode.com
- 26. array_map // array_map (callable $callback , array $array1 [, array $... ] ) $start = [1, 2, 3, 4, 5]; $end = array_map(function ($i) { return $i * 2; }, $start); // [2, 4, 6, 8, 10] @davidbhayes from ThoughtfulCode.com
- 27. array_map makes thiscode... $start = [1, 2, 3, 4, 5]; $end = []; foreach($start as $i) { $end[] = $i * 2; } @davidbhayes from ThoughtfulCode.com
- 28. Into this $start =[1, 2, 3, 4, 5]; $end = array_map(function ($i) { return $i * 2; }, $start); @davidbhayes from ThoughtfulCode.com
- 29. array_filter // array_filter (array $array [, callable $callback [, int $flag = 0 ]] ) $start = [1, 2, 3, 4, 5, 6]; $even = array_filter($start, function ($i) { return $i % 2 === 0; }); // [2, 4, 6] @davidbhayes from ThoughtfulCode.com
- 30. array_filter makes thiscode... $start = [1, 2, 3, 4, 5, 6]; $even = []; foreach($start as $i) { if ($i % 2 === 0) { $even[] = $i; } } @davidbhayes from ThoughtfulCode.com
- 31. Into this $start =[1, 2, 3, 4, 5, 6]; $even = array_filter($start, function ($i) { return $i % 2 === 0; }); @davidbhayes from ThoughtfulCode.com
- 32. Let's Talk about Callables @davidbhayesfrom ThoughtfulCode.com
- 33. Simple function declarationsare global function hello($name) { return 'Hello, '.$name; } Called like... echo hello('David'); @davidbhayes from ThoughtfulCode.com
- 34. Anonymous functions canbe saved to variables $hello = function($name) { return 'Hello, '.$name; } Called like... echo $hello('David'); @davidbhayes from ThoughtfulCode.com
- 35. Classes can havestatic methods class Namer { public static function hello($name) { return 'Hello, '.$name; } } Called like... echo Namer::hello('David'); @davidbhayes from ThoughtfulCode.com
- 36. Objects can havemethods class Namer { public function hello($name) { return 'Hello, '.$name; } } Called like... $namer = new Namer; echo $namer->hello('David'); @davidbhayes from ThoughtfulCode.com
- 37. All forms canbe used with array_map, etc $names = ['David', 'Megan', 'Sierra']; array_map('hello', $names); array_map($hello, $names); array_map('Namer::hello', $names); array_map(['Namer', 'hello'], $names); $namer = new Namer; array_map([$namer, 'hello'], $names); @davidbhayes from ThoughtfulCode.com
- 38. Let's Talk aboutuse @davidbhayes from ThoughtfulCode.com
- 39. Variable Scoping @davidbhayes fromThoughtfulCode.com
- 40. This does notwork! $nonlocal = 7; $greaterThan = function($number) { return $number > $nonlocal; } $greaterThan(1); @davidbhayes from ThoughtfulCode.com
- 41. This also doesnot work! global $nonlocal = 7; $greaterThan = function($number) { return $number > $nonlocal; } $greaterThan(1); @davidbhayes from ThoughtfulCode.com
- 42. This does work! global$nonlocal = 7; $greaterThan = function($number) { global $nonlocal; return $number > $nonlocal; } $greaterThan(1); @davidbhayes from ThoughtfulCode.com
- 43. But this isbetter! $nonlocal = 7; $greaterThan = function($number) use ($nonlocal) { return $number > $nonlocal; } $greaterThan(1); @davidbhayes from ThoughtfulCode.com
- 44. Why this matters $nonlocal= 7; $greaterThan = function($number) use ($nonlocal) { return $number > $nonlocal; } array_filter($array, $greaterThan); @davidbhayes from ThoughtfulCode.com
- 45. Or else $nonlocal =7; array_filter($array, function($number) use ($nonlocal) { return $number > $nonlocal; }); @davidbhayes from ThoughtfulCode.com
- 46. Remember this? $saved =[]; foreach($items as $item) { if ($item->size > 5) { $saved[] = $item; } } $display_titles = []; foreach($saved as $item) { $display_titles[] = ucfirst($item->title); } foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com
- 47. Let's transform filter infor foreach $saved = array_filter($items, function($i) { return $item->size > 5; }); $display_titles = []; foreach($saved as $item) { $display_titles[] = ucfirst($item->title); } foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com
- 48. Let's transform map forcapitalizing $saved = array_filter($items, function($i) { return $i->size > 5; }); $display_titles = array_map(function($item) { return ucfirst($item->title); }, $saved); // somewhere else foreach($display_titles as $title) { echo '<h1>'.$title.'</h1>'; } @davidbhayes from ThoughtfulCode.com
- 49. Hassles with that •Temporary variables at every step • Argument order on array_filter and array_map is inconsistent @davidbhayes from ThoughtfulCode.com
- 50. But maybe wecan solve that... @davidbhayes from ThoughtfulCode.com
- 51. Collection Libraries @davidbhayes fromThoughtfulCode.com
- 52. Collections allow usto streamline filter, map, etc @davidbhayes from ThoughtfulCode.com
- 53. Why collection pipelines? @davidbhayes fromThoughtfulCode.com
- 54. Easier to read-- we read left to right in English array_map(array_filter()) executes inside out @davidbhayes from ThoughtfulCode.com
- 55. Skip argument orderissues Which one's the array? @davidbhayes from ThoughtfulCode.com
- 56. No need fortemps with fluent interface ->chaining()->methods()->is()->cool(); @davidbhayes from ThoughtfulCode.com
- 57. Your ORM may alreadyhave one... @davidbhayes from ThoughtfulCode.com
- 58. Using a LaravelCollection We have a Reddit-like site: • Posts have scores • Comments have scores • We have a 'fluency scorer' • We have a hypothesis that good posts get higher scoring and more fluent comments @davidbhayes from ThoughtfulCode.com
- 59. Without FP $posts =Posts::all(); $goodPosts = []; foreach($posts as $post) { if ($post->score > 500) { $goodPosts[] = $post; } } $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com
- 60. Refactor 1 -filter out posts $goodPosts = Posts::all() ->filter(function($post) { return $post->score > 500 }); $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com
- 61. Quick Explanation • flattenwill take nested arrays and de-nest them • PHP doesn't have an native array_flatten, but you can make one @davidbhayes from ThoughtfulCode.com
- 62. Refactor 2 -collect good comments on good posts $goodComments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->map(function($p) { return $post->comments; }) ->flatten() ->filter(function($c) { return $c->score > 100; }); $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com
- 63. Quick Simplification • flatMapis a shortcut for map then flatten @davidbhayes from ThoughtfulCode.com
- 64. Refactor 2 -collect good comments on good posts (again) $goodComments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }); $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com
- 65. Refactor 3 -create new set with a map $scoredGoodCommments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }) ->map(function($c) { return [ 'score' => $c->score, 'fluency' => FluentScorer::score($c->content), 'comment' => $c, 'post' => $c->post, ]; }); @davidbhayes from ThoughtfulCode.com
- 66. Did it getbetter? (original) $posts = Posts::all(); $goodPosts = []; foreach($posts as $post) { if ($post->score > 500) { $goodPosts[] = $post; } } $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com
- 67. Did it getbetter? (final) $scoredGoodCommments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }) ->map(function($c) { return [ 'score' => $c->score, 'fluency' => FluentScorer::score($c->content), 'comment' => $c, 'post' => $c->post, ]; }); @davidbhayes from ThoughtfulCode.com
- 68. What makes codehard to maintain? • Short-lived variables are clutter • Disguised intent via foreach • Deeply nested conditionals @davidbhayes from ThoughtfulCode.com
- 69. Does FP help? Localand temporary $variables are reduced, especially with pipelines @davidbhayes from ThoughtfulCode.com
- 70. Does FP help? Replacingforeaches with map and filter makes it clearer what each does @davidbhayes from ThoughtfulCode.com
- 71. Does FP help? Nestingis minimized by small, single purpose functions @davidbhayes from ThoughtfulCode.com
- 72. "A program cannot changeuntil it is alive in a programmer's head." —Jessica Kerr on Ruby Rogues (via @johnkary) @davidbhayes from ThoughtfulCode.com
- 73. Localizing control andcomplexity makes it easier for you to jump in between meetings, children, life, etc @davidbhayes from ThoughtfulCode.com
- 74. Again Did it getbetter? (original) $posts = Posts::all(); $goodPosts = []; foreach($posts as $post) { if ($post->score > 500) { $goodPosts[] = $post; } } $goodComments = []; foreach($goodPosts as $post) { $comments = $post->comments; foreach($comments as $c) { if ($c->score > 100) { $goodComments[] = $c; } } } $scoredGoodComments = []; foreach($goodComments as $c) { $local['score'] = $c->score; $local['fluency'] = FluentScorer::score($c->content); $local['comment'] = $c; $local['post'] = $c->post; $scoredGoodComments[] = $local; } @davidbhayes from ThoughtfulCode.com
- 75. Did it getbetter? (final) $scoredGoodCommments = Posts::all() ->filter(function($post) { return $post->score > 500 }) ->flatMap(function($p) { return $post->comments; }) ->filter(function($c) { return $c->score > 100; }) ->map(function($c) { return [ 'score' => $c->score, 'fluency' => FluentScorer::score($c->content), 'comment' => $c, 'post' => $c->post, ]; }); @davidbhayes from ThoughtfulCode.com
- 76. Thank You!I've been@davidbhayes I run a site called WPShout and another called Thoughtful Code @davidbhayes from ThoughtfulCode.com