Extend ext/openssl test for openssl_digest()

Cover the hex and binary output branches, data with NUL bytes and the
unknown algorithm warning.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Author: adapik

ext/openssl/tests/openssl_digest_basic.phpt

@@ -10,7 +10,34 @@ $method2 = "sha1";
 
 var_dump(openssl_digest($data, $method));
 var_dump(openssl_digest($data, $method2));
+
+echo "Hex output\n";
+var_dump(openssl_digest('abc', 'sha256'));
+var_dump(openssl_digest('abc', 'sha256', false));
+
+echo "Binary output\n";
+$raw = openssl_digest('abc', 'sha256', true);
+var_dump(strlen($raw));
+var_dump(bin2hex($raw));
+
+echo "Data with NUL bytes\n";
+var_dump(openssl_digest("a\0b", 'sha256'));
+
+echo "Unknown algorithm\n";
+var_dump(openssl_digest('abc', 'unknown'));
 ?>
---EXPECT--
+--EXPECTF--
 string(32) "f0045b6c41d9ec835cb8948c7fec4955"
 string(40) "aa6e750fef05c2414c18860ad31f2c35e79bf3dc"
+Hex output
+string(64) "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
+string(64) "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
+Binary output
+int(32)
+string(64) "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
+Data with NUL bytes
+string(64) "59b271ae1bbcb1d31d41929817f4b16fb439eb4f31520b5ad1d5ce98920a7138"
+Unknown algorithm
+
+Warning: openssl_digest(): Unknown digest algorithm in %s on line %d
+bool(false)