Missing argument 2 for function in wordpress

Question

I create a function in wordpress function.php, but I get an error:

Argument 2 missing for get_appcara_child () in C: \ wamp \ www \ appcara \ wp-content \ themes \ appkara \ functions.php on line 617

The function gives the correct output, but I do not know why it displays this warning.

My .php function

add_action( 'init', 'get_appcara_child',2 ); function get_appcara_child($post,$parent) { echo $post; echo $parent; } 

Call on page .php

 $child= get_appcara_child($post->ID , $post->post_parent); 

Answer 1

Format:

 add_action( HOOK, CALLBACK, PRIORITY, NUMBER OF PARAMETERS ); 

You set priority 2 , and it should be parameters ( $post,$parent ). Correction:

 add_action( 'init', 'get_appcara_child', 10, 2 ); 

PS: 10 is the default priority.

Answer 2

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