Core Function
View Source on Trac ↗ add_filter()
add_filter(
mixed $hook_name,
mixed $callback,
mixed $priority = 10,
mixed $accepted_args = 1
) Adds a callback function to a filter hook.
Parameters 3 required
| Name / Type | Description |
|---|---|
| $hook_name string | The name of the filter to add the callback to. Required |
| $callback callable | The callback to be run when the filter is applied. Required |
| int | $priority Optional. Used to specify the order in which the functions associated with a particular filter 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 filter. Default 10. Required |
| $accepted_args int | Optional. The number of arguments the function accepts. Default 1. |
Return Value
(true)
Always returns true.
Function Information
Since Version
0.71
Source File
wp-includes/plugin.php
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