<?php
$names = ['Alice', 'Bob', 'Charlie', 'Alice', 'Dave', 'Alice'];
class Name {
public $name;
public $id;
public function __construct($name, $id = 0) {
$this->name = $name;
$this->id = $id;
}
}
function is_similar($a, $b) {
return $a->name == $b->name;
}
function contains(array $list, $item, callable $comparitor) {
foreach ($list as $test) {
if ($comparitor($item, $test)) {
return true;
}
}
return false;
}
function partial($func, $arg1) {
$func_args = func_get_args();
$args = array_slice($func_args, 1);
return function() use($func, $args) {
$full_args = array_merge($args, func_get_args());
return call_user_func_array($func, $full_args);
};
}
// Transform strings -> objects
$mappedNames = array_map(function($name) { return new Name($name); }, $names);
// Deduplicate list
$reduction = function(callable $comparitor, array $carry, $item) {
if (contains($carry, $item, $comparitor)) {
return $carry;
}
return array_merge($carry, array($item));
};
$reducedNames = array_reduce($mappedNames, partial($reduction, "is_similar"), []);
$idNames = array_map(function($item, $id) {
return new Name($item->name, $id);
}, $reducedNames, range(1, count($reducedNames)));
var_dump($idNames);
- Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- array(4) {
[0]=>
object(Name)#9 (2) {
["name"]=>
string(5) "Alice"
["id"]=>
int(1)
}
[1]=>
object(Name)#10 (2) {
["name"]=>
string(3) "Bob"
["id"]=>
int(2)
}
[2]=>
object(Name)#11 (2) {
["name"]=>
string(7) "Charlie"
["id"]=>
int(3)
}
[3]=>
object(Name)#12 (2) {
["name"]=>
string(4) "Dave"
["id"]=>
int(4)
}
}
- Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/um2Ge on line 3
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/um2Ge on line 3
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/um2Ge on line 3
Process exited with code 255.
preferences:
259.39 ms | 401 KiB | 460 Q