21 lines
416 B
PHP
21 lines
416 B
PHP
<?php
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declare(strict_types=1);
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namespace App\Support\Pdf;
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final class PdfByteValidator
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{
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public static function isValid(string $bytes): bool
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{
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if ($bytes === '' || ! str_starts_with($bytes, '%PDF-')) {
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return false;
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}
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$trimmedBytes = rtrim($bytes);
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return str_contains($trimmedBytes, 'startxref')
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&& str_ends_with($trimmedBytes, '%%EOF');
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}
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}
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