WordPress开发手册:add_action()

函数原型

add_action( string $hook_name, callable $callback, int $priority = 10, int $accepted_args = 1 ): true

函数描述

是否弃用

未弃用

函数参数

$hook_name
string
Required

The name of the action to add the callback to.

$callback
callable
Required

The callback to be run when the action is called.

$priority
int
Optional

Used to specify the order in which the functions associated with a particular action are executed.
Lower numbers correspond with earlier execution, and functions with the same priority are executed in the order in which they were added to the action.

Default: 10

$accepted_args
int
Optional

The number of arguments the function accepts.

Default: 1

函数返回值

函数位置

函数源码

add_action( $hook, $function_to_add, $priority, $accepted_args );

源码链接

WordPress
Github

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