I already tried to Google how to do this, but I still can't figure it out. How do I create a simple hook inside PHP? Here is what I've tried so far:
wrapper.php (application starts here)
<?php require 'core.php'; ?>
<?php require 'view.php'; ?>
core.php
<?php
$hooks['hook_head'] = array();
//supposed to insert action in $hooks
function addHook($hookName, $funct){
global $hooks;
array_push($hooks[$hookName], $funct);
}
//supposed to execute specific hook
function executeHook($hookname){
global $hooks;
foreach($hooks[$hookname] as $funct){
call_user_func( $funct );
}
}
//supposed to execute action in $hooks when array key = hook_head
function hook_head(){
global $hooks;
if (array_key_exists('hook_head', $hooks)) {
executeHook( 'hook_head' );
}
}
//supposed to execute action in $hooks when array key == hook_footer
function hook_footer(){
global $hooks;
if (array_key_exists('hook_footer', $hooks)) {
executeHook( 'hook_footer' );
}
}
?>
view.php
<!DOCTYPE HTML>
<html>
<head>
<?php hook_head(); ?>
</head>
<body>
<hr />
<?php
//add action to hook start here
$test = function(){ echo "test succeds"; };
addHook('hook_head', $test);
?>
<?php hook_footer(); ?>
</body>
</html>
The code works fine if I insert an action inside $hooks['hook_head'], before I call hook_head(). What I actually am trying to do though, is insert the action after I called hook_head(). How do I do this?
