Created
February 12, 2023 13:23
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Este es un ejemplo sencillo de programación funcional y tuberías con php
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| <?php | |
| function pipe(...$functions): callable { | |
| return function($value) use ($functions) { | |
| foreach($functions as $function) { | |
| $value = $function($value); | |
| } | |
| return $value; | |
| }; | |
| } | |
| function map(callable $function): callable { | |
| return function(array $values) use ($function) { | |
| return array_map(function($item) use ($function) { | |
| return $function($item); | |
| }, $values); | |
| }; | |
| } | |
| function splitBy(string $string): callable { | |
| return function(string $value) use($string): array { | |
| return explode($string, $value); | |
| }; | |
| } | |
| function reverseArr(): callable { | |
| return function(array $value): array { | |
| return array_reverse($value); | |
| }; | |
| } | |
| function takeFirst(): callable { | |
| return function(array $value): ?string { | |
| return $value[0] ?? null; | |
| }; | |
| } | |
| function takeElement(int $offset): callable { | |
| return function(array $value) use($offset): ?string { | |
| return $value[$offset] ?? null; | |
| }; | |
| } | |
| function dateFormat(string $format): callable { | |
| return function(string $value) use($format): ?string { | |
| return date($format, strtotime($value)); | |
| }; | |
| } | |
| function enquote(): callable { | |
| return function(string $value) { | |
| return "'{$value}'"; | |
| }; | |
| } | |
| $formatter = pipe( | |
| splitBy(' '), | |
| reverseArr(), | |
| takeFirst(), | |
| ); | |
| $input = ['prueba uno a las 09:12:22', 'prueba dos a las 10:00:00']; | |
| $result = pipe( | |
| map($formatter), | |
| map(enquote()) | |
| )($input); | |
| print_r($result); |
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