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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
4108 | /** |
4109 | * Fires when the given function is being used incorrectly. |
4110 | * |
4111 | * @since 3.1.0 |
4112 | * |
4113 | * @param string $function The function that was called. |
4114 | * @param string $message A message explaining what has been done incorrectly. |
4115 | * @param string $version The version of WordPress where the message was added. |
4116 | */ |
4117 | do_action( 'doing_it_wrong_run', $function, $message, $version ); |
4118 |
|
4119 | /** |
4120 | * Filters whether to trigger an error for _doing_it_wrong() calls. |
4121 | * |
4122 | * @since 3.1.0 |
4123 | * |
4124 | * @param bool $trigger Whether to trigger the error for _doing_it_wrong() calls. Default true. |
4125 | */ |
4126 | if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) { |