Theme Activate Hook

Question

I would like to write a function to email me the URL of the website when my theme is activated.

What is the hook initiated when the theme is activated?

Answer 1

I have that code here just name the file theme_activation_hook.php like on the website and copy this.

<?php
/**
 * Provides activation/deactivation hook for wordpress theme.
 *
 * @author Krishna Kant Sharma (http://www.krishnakantsharma.com)
 *
 * Usage:
 * ----------------------------------------------
 * Include this file in your theme code.
 * ----------------------------------------------
 * function my_theme_activate() {
 *    // code to execute on theme activation
 * }
 * wp_register_theme_activation_hook('mytheme', 'my_theme_activate');
 *
 * function my_theme_deactivate() {
 *    // code to execute on theme deactivation
 * }
 * wp_register_theme_deactivation_hook('mytheme', 'my_theme_deactivate');
 * ----------------------------------------------
 * 
 * 
 */

/**
 *
 * @desc registers a theme activation hook
 * @param string $code : Code of the theme. This can be the base folder of your theme. Eg if your theme is in folder 'mytheme' then code will be 'mytheme'
 * @param callback $function : Function to call when theme gets activated.
 */
function wp_register_theme_activation_hook($code, $function) {
    $optionKey="theme_is_activated_" . $code;
    if(!get_option($optionKey)) {
        call_user_func($function);
        update_option($optionKey , 1);
    }
}

/**
 * @desc registers deactivation hook
 * @param string $code : Code of the theme. This must match the value you provided in wp_register_theme_activation_hook function as $code
 * @param callback $function : Function to call when theme gets deactivated.
 */
function wp_register_theme_deactivation_hook($code, $function) {
    // store function in code specific global
    $GLOBALS["wp_register_theme_deactivation_hook_function" . $code]=$function;

    // create a runtime function which will delete the option set while activation of this theme and will call deactivation function provided in $function
    $fn=create_function('$theme', ' call_user_func($GLOBALS["wp_register_theme_deactivation_hook_function' . $code . '"]); delete_option("theme_is_activated_' . $code. '");');

    // add above created function to switch_theme action hook. This hook gets called when admin changes the theme.
    // Due to wordpress core implementation this hook can only be received by currently active theme (which is going to be deactivated as admin has chosen another one.
    // Your theme can perceive this hook as a deactivation hook.
    add_action("switch_theme", $fn);
}

Answer 2

I have written a code which provides a reliable activation/deactivation theme hooks. Please check it out and let me know what you guys think!

http://www.krishnakantsharma.com/2011/01/activationdeactivation-hook-for-wordpress-theme/

Answer 3

There is no specialized hook for this. I have seen couple of approaches:

• switch_theme hook with checking for your theme - Execute “Setup” Code on Activation only?
• detecting admin page after theme activation - Set options on activation Themes

I want to note that emailing yourself any information without user's consent (and running anything on activation has no opportunity to request such) can be viewed as inappropriate.

Answer 4

Place this code at the top in your functions.php

<?php if ( is_admin() && isset($_GET['activated'] ) && $pagenow == "themes.php" ) {
// do your stuff
$url = get_site_url();
// The message
$message = "a new wordpress theme is activated on $url ";

// In case any of our lines are larger than 70 characters, we should use wordwrap()
$message = wordwrap($message, 70, "\r\n");

// Send
wp_mail('mail@yourdomain.com', 'theme geactiveerd', $message);
}

?>

replace mail@yourdomain.com with your own email address.

Hope it helps.