Php 简明教程
PHP - Function References
PHP 在内置函数方面非常丰富。以下列出各种重要函数类别。这里还有其他一些没有涉及的函数类别。
PHP is very rich in terms of Built-in functions. Here is the list of various important function categories. There are various other function categories which are not covered here.
选择一个类别，以查看与该类别相关的所有函数的列表。
Select a category to see a list of all the functions related to that category.