How create a test function on WordPress -


i want create custom functions on wordpress ? test function bellow 

function test() {      echo "welcome"; }

and how can convert function wordpress , how can call function?

put in functions.php in theme. can call function anywhere in theme. can have function called on events adding action hook.

for example call function whenever save post:

add_action( 'save_post', 'test' );

see list of action hooks.


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