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<?php
namespace Mbright\Validation\Rule\Sanitize;
use Mbright\Validation\Rule\AbstractStringCase;
class Strlen extends AbstractStringCase implements SanitizeRuleInterface
{
/** @var int */
protected $len;
/** @var string */
protected $padString;
protected $padType;
/**
* @param int $len The string length.
* @param string $pad_string Pad using this string.
* @param int $pad_type A `STR_PAD_*` constant.
*/
public function __construct(int $len, string $padString = ' ', int $padType = STR_PAD_RIGHT)
$this->len = $len;
$this->padString = $padString;
$this->padType = $padType;
}
* Sanitizes a string to an exact length by padding or chopping it.
*
* @param object $subject The subject to be filtered.
* @param string $field The subject field name.
* @return bool True if the value was sanitized, false if not.
public function __invoke($subject, string $field): bool
$value = $subject->$field;
if (!is_scalar($value)) {
return false;
if ($this->strlen($value) < $this->len) {
$subject->$field = $this->strpad($value, $this->len, $this->padString, $this->padType);
if ($this->strlen($value) > $this->len) {
$subject->$field = $this->substr($value, 0, $this->len);
return true;
MarcusFulbright /
Validate
