php.ini 配置详细选项(2)
配置每个处理程序最多开几个 Postgres 连接，包括持续连接。
sybase.allow_persistent boolean
配置是否允许 Sybase 数据库持续连接 (persistent connections)，会影响 sybase_pconnect() 函数。
sybase.max_persistent integer
配置每个处理程序最多保持几个 Sybase 持续连接。
sybase.max_links integer
配置每个处理程序最多开几个 Sybase 连接，包括持续连接。
sybct.allow_persistent boolean
配置是否允许 Sybase-CT 数据库持续连接 (persistent connections)，默认值是打开的。
sybct.max_persistent integer
配置每个处理程序最多保持几个 Sybase-CT 持续连接。默认值为 -1 表示无限制。
sybct.max_links integer
配置每个处理程序最多开几个 Sybase-CT 连接，包括持续连接。默认值为 -1，表示没有限制。
sybct.min_server_severity integer
配置 Sybase-CT 服务器错误报告的最少笔数。默认值为 10。
sybct.min_client_severity integer
配置 Sybase-CT 客户端错误报告的最少笔数。默认值为 10。
sybct.login_timeout integer
配置 Sybase-CT 最久可以使用的登入时间。默认值为 1 分钟。
sybct.timeout integer
配置 Sybase-CT 的 query 操作时间限制。默认值为无限制。
sybct.hostname string
配置 Sybase-CT 可连接机器名称。默认值不设限
ifx.allow_persistent boolean
配置是否允许 Informix 数据库持续连接 (persistent connections)，会影响 ifx_pconnect() 函数。
ifx.max_persistent integer
配置每个处理程序最多保持几个 Informix 持续连接。
ifx.max_links integer
配置每个处理程序最多开几个 Informix 连接，包括持续连接。
ifx.default_host string
配置 Informix 默认连接的服务器名称，供 ifx_connect() 或 ifx_pconnect() 函数使用。
ifx.default_user string
配置 Informix 默认连接的用户帐号，供 ifx_connect() 或 ifx_pconnect() 函数使用。
ifx.default_password string
配置 Informix 默认连接的用户密码，供 ifx_connect() 或 ifx_pconnect() 函数使用。
ifx.blobinfile boolean
配置 Informix 长位类模式，0 表在内存；1 表在文件中。亦可以在 PHP 程序中使用 ifx_blobinfile_mode() 函数来修改。
ifx.textasvarchar boolean
配置 Informix 文字模式默认值，0 表返回 blob 的代码；1 表返回 varchar 字符串。亦可在 PHP 程序中使用 ifx_textasvarchar() 函数来修改配置。
ifx.byteasvarchar boolean
配置 Informix 位组模式默认值，0 表返回 blob 的代码；1 表返回 varchar 字符串。亦可在 PHP 程序中使用 ifx_byteasvarchar() 来修改配置。
ifx.charasvarchar boolean
配置 Informix 返回字符串的字尾空格是否要自动去除。
ifx.nullformat boolean
配置 NULL 字段的返回方式，true 表示返回字符串 NULL，false 表格返回字符串 ""。亦可在 PHP 程序中以 ifx_nullformat() 修改。
bcmath.scale integer
配置 BC 高精确度函数库的小数点位数。
browscap string
配置浏览器的开文件能力名。
uodbc.default_db string
配置 ODBC 默认连接的数据库名称，供 odbc_connect() 或 odbc_pconnect() 函数使用。
uodbc.default_user string
配置 ODBC 默认连接的用户帐号，供 odbc_connect() 或 odbc_pconnect() 函数使用。
uodbc.default_pw string
配置 ODBC 默认连接的用户密码，供 odbc_connect() 或 odbc_pconnect() 函数使用。
uodbc.allow_persistent boolean
配置是否允许 ODBC 数据库持续连接 (persistent connections)，会影响 odbc_pconnect() 函数。
uodbc.max_persistent integer
配置每个处理程序最多保持几个 ODBC 持续连接。
uodbc.max_links integer
配置每个处理程序最多开几个 ODBC 连接，包括持续连接。
以下和 session 有关的配置值，都在 PHP 4.x 以上的版本方支持。在 php.ini 的配置文件中。
session.save_handler
定义 session 储存资料的文件名称。默认值为 files。
session.save_path
定义 session 储存资料的文件路径。默认值为 /tmp。
session.name
配置 session 所使用的 cookie 名称。默认值为 PHPSESSID。
session.auto_start
配置 session 是否自动打开。默认值为 0 (否)。
session.lifetime
配置 cookie 送到浏览器后的保存时间，单位为秒。默认值为 0，表示直到浏览器关闭。
session.serialize_handler
定义连续/解连续资料的标头，本功能只有 WDDX 模块或 PHP 内部使用。默认值为 php。
session.gc_probability
配置每笔要求回应时的废物蒐集 (gc, garbage collection) 处理机率。默认值为 1。
session.gc_maxlifetime
配置废物被清除前的存活秒数。
session.extern_referer_check
决定参照到客户端的 Session 代码是否要删除。有时在安全或其它考虑时，会配置不删除。默认值为 0。
session.entropy_file
配置 session 代码建立时，使用外部高熵值资源或文件来建立，例如 UNIX 系统上的 /dev/random 或 /dev/urandom。
session.entropy_length
配置 session 从高熵值资源读取的位组数。默认值为 0。
session.use_cookies
配置是否要将 session 变成 cookie 存在用户端。默认值为 1，表是打开本功能。
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