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I am learning plugin dev and modified this example snippet. I don't get why $myvar is empty in the my_plugin_action_handler function's scope.

<?php
/**
 * Plugin Name: TEST Plugin
 */

global $myvar;
$myvar = false;



function myplugin_activate() {
    global $myvar;
    
    $myvar = true;
    error_log($myvar); // this will be 'whatever'
}

function my_plugin_action_handler(){
    global $myvar;
    if($myvar){
        error_log("Var true");
    }
}

register_activation_hook( __FILE__, 'myplugin_activate' );
add_action('admin_notices', 'my_plugin_action_handler');

本文标签: pluginsSet and access global variable