## 新的全局常量

### 核心

- `PHP_OUTPUT_HANDLER_PROCESSED`
- `PHP_SBINDIR`

### cURL

- `CURL_HTTP_VERSION_3`
- `CURL_HTTP_VERSION_3ONLY`
- `CURL_TCP_KEEPCNT`
- `CURLOPT_PREREQFUNCTION`
- `CURL_PREREQFUNC_OK`
- `CURL_PREREQFUNC_ABORT`
- `CURLOPT_SERVER_RESPONSE_TIMEOUT`
- `CURLOPT_DEBUGFUNCTION`
- `CURLINFO_TEXT`
- `CURLINFO_HEADER_IN`
- `CURLINFO_DATA_IN`
- `CURLINFO_DATA_OUT`
- `CURLINFO_SSL_DATA_OUT`
- `CURLINFO_SSL_DATA_IN`
- `CURLINFO_POSTTRANSFER_TIME_T`

### Intl

- `PATTERN` (IntlDateFormatter)
- `PROPERTY_IDS_UNARY_OPERATOR` (IntlChar)
- `PROPERTY_ID_COMPAT_MATH_START`
- `PROPERTY_ID_COMPAT_MATH_CONTINUE`

### LDAP

- `LDAP_OPT_X_TLS_PROTOCOL_MAX`
- `LDAP_OPT_X_TLS_PROTOCOL_TLS1_3`

### libxml

- `LIBXML_RECOVER`
- `LIBXML_NO_XXE`。当需要执行实体替换时，此常量与 `LIBXML_NOENT` 一起使用，通知禁止加载外部实体。此常量自 libxml2 2.13 起可用。

### MySQLi

- `MYSQLI_TYPE_VECTOR`

### OpenSSL

- `X509_PURPOSE_OCSP_HELPER`
- `X509_PURPOSE_TIMESTAMP_SIGN`

### PCNTL

- `SIGCKPT` (DragonFlyBSD only)
- `SIGCKPTEXIT` (DragonFlyBSD only)
- `WEXITED`
- `WSTOPPED`
- `WNOWAIT`
- `P_ALL`
- `P_PID`
- `P_PGID`
- `P_PIDFD` (Linux only)
- `P_UID` (NetBSD/FreeBSD only)
- `P_GID` (NetBSD/FreeBSD only)
- `P_SID` (NetBSD/FreeBSD only)
- `P_JAILID` (FreeBSD only)

### PGSQL

- `PGSQL_TUPLES_CHUNK`

### POSIX

- `POSIX_SC_CHILD_MAX`
- `POSIX_SC_CLK_TCK`

### Sockets

现在如果支持，则会定义以下套接字选项：

- `SO_EXCLUSIVEADDRUSE` (Windows only)
- `SOCK_CONN_DGRAM` (NetBSD only)
- `SOCK_DCCP` (NetBSD only)
- `TCP_SYNCNT` (Linux only)
- `SO_EXCLBIND` (Solaris/Illumos only)
- `SO_NOSIGPIPE` (macOS and FreeBSD)
- `SO_LINGER_SEC` (macOS only)
- `IP_PORTRANGE` (FreeBSD/NetBSD/OpenBSD only)
- `IP_PORTRANGE_DEFAULT` (FreeBSD/NetBSD/OpenBSD only)
- `IP_PORTRANGE_HIGH` (FreeBSD/NetBSD/OpenBSD only)
- `IP_PORTRANGE_LOW` (FreeBSD/NetBSD/OpenBSD only)
- `SOCK_NONBLOCK`
- `SOCK_CLOEXEC`
- `SO_BINDTOIFINDEX`

### Sodium

- `SODIUM_CRYPTO_AEAD_AEGIS128L_KEYBYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS128L_NSECBYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS128L_NPUBBYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS128L_ABYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS256_KEYBYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS256_NSECBYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS256_NPUBBYTES`
- `SODIUM_CRYPTO_AEAD_AEGIS256_ABYTES`

### Tokenizer

- `T_PUBLIC_SET`
- `T_PROTECTED_SET`
- `T_PRIVATE_SET`

### XML

- `XML_OPTION_PARSE_HUGE` 允许使用 xml_parse() 和 xml_parse_into_struct() 解析大输入。

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