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PHP 手册
函数参考
变量与类型相关扩展
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数据过滤器
简介
安装/配置
需求
安装
运行时配置
资源类型
过滤器类型
验证过滤器
清理过滤器
其它过滤器
过滤器 flag
预定义常量
示例
验证
清理
过滤器函数
filter_has_var
— 检测是否存在指定类型的变量
filter_id
— 返回与某个特定名称的过滤器相关联的id
filter_input_array
— 获取一系列外部变量,并且可以通过过滤器处理它们
filter_input
— 通过名称获取特定的外部变量,并且可以通过过滤器处理它
filter_list
— 返回所支持的过滤器列表
filter_var_array
— 获取多个变量并且过滤它们
filter_var
— 使用特定的过滤器过滤一个变量
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