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: / usr / local / psa / admin / plib / modules / monitoring / vendor / laminas / laminas-i18n / src / Validator /
Filename : Alpha.php
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<?php

namespace PleskMonitoring\Laminas\I18n\Validator;

use PleskMonitoring\Laminas\I18n\Filter\Alpha as AlphaFilter;
use function is_string;
class Alpha extends Alnum
{
    public const INVALID = 'alphaInvalid';
    public const NOT_ALPHA = 'notAlpha';
    public const STRING_EMPTY = 'alphaStringEmpty';
    /**
     * Alphabetic filter used for validation
     *
     * @var AlphaFilter|null
     */
    protected static $filter;
    /**
     * Validation failure message template definitions
     *
     * @var string[]
     */
    protected $messageTemplates = [self::INVALID => 'Invalid type given. String expected', self::NOT_ALPHA => 'The input contains non alphabetic characters', self::STRING_EMPTY => 'The input is an empty string'];
    /**
     * Options for this validator
     *
     * @var array<string, mixed>
     */
    protected $options = ['allowWhiteSpace' => \false];
    /**
     * Returns true if and only if $value contains only alphabetic characters
     *
     * @param mixed $value
     * @return bool
     */
    public function isValid($value)
    {
        if (!is_string($value)) {
            $this->error(self::INVALID);
            return \false;
        }
        $this->setValue($value);
        if ('' === $value) {
            $this->error(self::STRING_EMPTY);
            return \false;
        }
        if (null === static::$filter) {
            static::$filter = new AlphaFilter();
        }
        static::$filter->setAllowWhiteSpace($this->getAllowWhiteSpace());
        if ($value !== static::$filter->filter($value)) {
            $this->error(self::NOT_ALPHA);
            return \false;
        }
        return \true;
    }
}