# 函数参考 [影响 PHP 行为的扩展](Ying%20Xiang%20PHPXing%20Wei%20De%20Kuo%20Zhan.html) [音频格式操作](Yin%20Pin%20Ge%20Shi%20Cao%20Zuo.html) [身份认证服务](Shen%20Fen%20Ren%20Zheng%20Fu%20Wu.html) [针对命令行的扩展](Zhen%20Dui%20Ming%20Ling%20Xing%20De%20Kuo%20Zhan.html) [压缩与归档扩展](Ya%20Suo%20Yu%20Gui%20Dang%20Kuo%20Zhan.html) [信用卡处理](Xin%20Yong%20Qia%20Chu%20Li.html) [加密扩展](Jia%20Mi%20Kuo%20Zhan.html) [数据库扩展](Shu%20Ju%20Ku%20Kuo%20Zhan.html) [日期与时间相关扩展](Ri%20Qi%20Yu%20Shi%20Jian%20Xiang%20Guan%20Kuo%20Zhan.html) [文件系统相关扩展](Wen%20Jian%20Xi%20Tong%20Xiang%20Guan%20Kuo%20Zhan.html) [国际化与字符编码支持](Guo%20Ji%20Hua%20Yu%20Zi%20Fu%20Bian%20Ma%20Zhi%20Chi.html) [图像生成和处理](Tu%20Xiang%20Sheng%20Cheng%20He%20Chu%20Li.html) [邮件相关扩展](You%20Jian%20Xiang%20Guan%20Kuo%20Zhan.html) [数学扩展](Shu%20Xue%20Kuo%20Zhan.html) [非文本内容的 MIME 输出](Fei%20Wen%20Ben%20Nei%20Rong%20De%20MIMEShu%20Chu.html) [进程控制扩展](Jin%20Cheng%20Kong%20Zhi%20Kuo%20Zhan.html) [其它基本扩展](Qi%20Ta%20Ji%20Ben%20Kuo%20Zhan.html) [其它服务](Qi%20Ta%20Fu%20Wu.html) [搜索引擎扩展](Sou%20Suo%20Yin%20Qing%20Kuo%20Zhan.html) [针对服务器的扩展](Zhen%20Dui%20Fu%20Wu%20Qi%20De%20Kuo%20Zhan.html) [Session 扩展](SessionKuo%20Zhan.html) [文本处理](Wen%20Ben%20Chu%20Li.html) [变量与类型相关扩展](Bian%20Liang%20Yu%20Lei%20Xing%20Xiang%20Guan%20Kuo%20Zhan.html) [Web 服务](WebFu%20Wu.html) [Windows 专用扩展](WindowsZhuan%20Yong%20Kuo%20Zhan.html) [XML 操作](XMLCao%20Zuo.html) [图形用户界面(GUI) 扩展](Tu%20Xing%20Yong%20Hu%20Jie%20Mian%20GUIKuo%20Zhan.html)