# 函数 * [assert\_options](https://www.php.net/manual/zh/function.assert-options.php)— 设置/获取断言的各种标志 * [assert](https://www.php.net/manual/zh/function.assert.php)— 检查一个断言是否为 FALSE * [cli\_get\_process\_title](https://www.php.net/manual/zh/function.cli-get-process-title.php)— 返回当前进程标题 * [cli\_set\_process\_title](https://www.php.net/manual/zh/function.cli-set-process-title.php)— 设置进程标题 * [dl](https://www.php.net/manual/zh/function.dl.php)— 运行时载入一个 PHP 扩展 * [extension\_loaded](https://www.php.net/manual/zh/function.extension-loaded.php)— 检查一个扩展是否已经加载 * [gc\_collect\_cycles](https://www.php.net/manual/zh/function.gc-collect-cycles.php)— 强制收集所有现存的垃圾循环周期 * [gc\_disable](https://www.php.net/manual/zh/function.gc-disable.php)— 停用循环引用收集器 * [gc\_enable](https://www.php.net/manual/zh/function.gc-enable.php)— 激活循环引用收集器 * [gc\_enabled](https://www.php.net/manual/zh/function.gc-enabled.php)— 返回循环引用计数器的状态 * [gc\_mem\_caches](https://www.php.net/manual/zh/function.gc-mem-caches.php)—回收Zend引擎内存管理器使用的内存 * [gc\_status](https://www.php.net/manual/zh/function.gc-status.php)— 获取有关垃圾收集器的信息 * [get\_cfg\_var](https://www.php.net/manual/zh/function.get-cfg-var.php)— 获取 PHP 配置选项的值 * [get\_current\_user](https://www.php.net/manual/zh/function.get-current-user.php)— 获取当前 PHP 脚本所有者名称 * [get\_defined\_constants](https://www.php.net/manual/zh/function.get-defined-constants.php)— 返回所有常量的关联数组，键是常量名，值是常量值 * [get\_extension\_funcs](https://www.php.net/manual/zh/function.get-extension-funcs.php)— 返回模块函数名称的数组 * [get\_include\_path](https://www.php.net/manual/zh/function.get-include-path.php)— 获取当前的 include\_path 配置选项 * [get\_included\_files](https://www.php.net/manual/zh/function.get-included-files.php)— 返回被 include 和 require 文件名的 array * [get\_loaded\_extensions](https://www.php.net/manual/zh/function.get-loaded-extensions.php)— 返回所有编译并加载模块名的 array * [get\_magic\_quotes\_gpc](https://www.php.net/manual/zh/function.get-magic-quotes-gpc.php)— 获取当前 magic\_quotes\_gpc 的配置选项设置 * [get\_magic\_quotes\_runtime](https://www.php.net/manual/zh/function.get-magic-quotes-runtime.php)— 获取当前 magic\_quotes\_runtime 配置选项的激活状态 * [get\_required\_files](https://www.php.net/manual/zh/function.get-required-files.php)— 别名 get\_included\_files * [get\_resources](https://www.php.net/manual/zh/function.get-resources.php)— 返回活动资源 * [getenv](https://www.php.net/manual/zh/function.getenv.php)— 获取一个环境变量的值 * [getlastmod](https://www.php.net/manual/zh/function.getlastmod.php)— 获取页面最后修改的时间 * [getmygid](https://www.php.net/manual/zh/function.getmygid.php)— 获取当前 PHP 脚本拥有者的 GID * [getmyinode](https://www.php.net/manual/zh/function.getmyinode.php)— 获取当前脚本的索引节点（inode） * [getmypid](https://www.php.net/manual/zh/function.getmypid.php)— 获取 PHP 进程的 ID * [getmyuid](https://www.php.net/manual/zh/function.getmyuid.php)— 获取 PHP 脚本所有者的 UID * [getopt](https://www.php.net/manual/zh/function.getopt.php)— 从命令行参数列表中获取选项 * [getrusage](https://www.php.net/manual/zh/function.getrusage.php)— 获取当前资源使用状况 * [ini\_alter](https://www.php.net/manual/zh/function.ini-alter.php)— 别名 ini\_set * [ini\_get\_all](https://www.php.net/manual/zh/function.ini-get-all.php)— 获取所有配置选项 * [ini\_get](https://www.php.net/manual/zh/function.ini-get.php)— 获取一个配置选项的值 * [ini\_restore](https://www.php.net/manual/zh/function.ini-restore.php)— 恢复配置选项的值 * [ini\_set](https://www.php.net/manual/zh/function.ini-set.php)— 为一个配置选项设置值 * [magic\_quotes\_runtime](https://www.php.net/manual/zh/function.magic-quotes-runtime.php)— 别名 set\_magic\_quotes\_runtime * [main](https://www.php.net/manual/zh/function.main.php)— 虚拟的main * [memory\_get\_peak\_usage](https://www.php.net/manual/zh/function.memory-get-peak-usage.php)— 返回分配给 PHP 内存的峰值 * [memory\_get\_usage](https://www.php.net/manual/zh/function.memory-get-usage.php)— 返回分配给 PHP 的内存量 * [php\_ini\_loaded\_file](https://www.php.net/manual/zh/function.php-ini-loaded-file.php)— 取得已加载的 php.ini 文件的路径 * [php\_ini\_scanned\_files](https://www.php.net/manual/zh/function.php-ini-scanned-files.php)— 返回从额外 ini 目录里解析的 .ini 文件列表 * [php\_logo\_guid](https://www.php.net/manual/zh/function.php-logo-guid.php)— 获取 logo 的 guid * [php\_sapi\_name](https://www.php.net/manual/zh/function.php-sapi-name.php)— 返回 web 服务器和 PHP 之间的接口类型 * [php\_uname](https://www.php.net/manual/zh/function.php-uname.php)— 返回运行 PHP 的系统的有关信息 * [phpcredits](https://www.php.net/manual/zh/function.phpcredits.php)— 打印 PHP 贡献者名单 * [phpinfo](https://www.php.net/manual/zh/function.phpinfo.php)— 输出关于 PHP 配置的信息 * [phpversion](https://www.php.net/manual/zh/function.phpversion.php)— 获取当前的PHP版本 * [putenv](https://www.php.net/manual/zh/function.putenv.php)— 设置环境变量的值 * [restore\_include\_path](https://www.php.net/manual/zh/function.restore-include-path.php)— 还原 include\_path 配置选项的值 * [set\_include\_path](https://www.php.net/manual/zh/function.set-include-path.php)— 设置 include\_path 配置选项 * [set\_magic\_quotes\_runtime](https://www.php.net/manual/zh/function.set-magic-quotes-runtime.php)— 设置当前 magic\_quotes\_runtime 配置选项的激活状态 * [set\_time\_limit](https://www.php.net/manual/zh/function.set-time-limit.php)— 设置脚本最大执行时间 * [sys\_get\_temp\_dir](https://www.php.net/manual/zh/function.sys-get-temp-dir.php)— 返回用于临时文件的目录 * [version\_compare](https://www.php.net/manual/zh/function.version-compare.php)— 对比两个「PHP 规范化」的版本数字字符串 * [zend\_logo\_guid](https://www.php.net/manual/zh/function.zend-logo-guid.php)— 获取 Zend guid * [zend\_thread\_id](https://www.php.net/manual/zh/function.zend-thread-id.php)— 返回当前线程的唯一识别符 * [zend\_version](https://www.php.net/manual/zh/function.zend-version.php)— 获取当前 Zend 引擎的版本