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<?php
declare(strict_types=1);
namespace Doctrine\Inflector\Rules;
use Doctrine\Inflector\WordInflector;
use function array_keys;
use function array_values;
use function implode;
use function preg_match;
use function strtolower;
use function substr;
class Irregular implements WordInflector
{
/** @var Rule[] */
private $rules;
/** @var string|null */
private $regex;
public function __construct(Rule ...$rules)
foreach ($rules as $rule) {
$this->rules[$rule->getFrom()] = $rule;
}
/**
* @return Rule[]
*/
public function getFlippedRules() : iterable
foreach ($this->rules as $rule) {
yield new Rule($rule->getTo(), $rule->getFrom());
public function getRules() : iterable
yield from array_values($this->rules);
public function inflect(string $word) : string
if (preg_match('/(.*)\\b(' . $this->getRegex() . ')$/i', $word, $regs)) {
return $regs[1] . $word[0] . substr($this->rules[strtolower($regs[2])]->getTo(), 1);
return $word;
private function getRegex() : string
if ($this->regex === null) {
$this->regex = '(?:' . implode('|', array_keys($this->rules)) . ')';
return $this->regex;
doctrine /
inflector
