plugin activation error handling

  • Hi !

    I could not find the answer to my newbie question in the codex so I ask here.

    Within a plugin activation function, how to tell wordpress whether the plugin could be activated or not and if not how to display an error message whithin the wordpres plugin management page ?

    thanks

Viewing 5 replies - 1 through 5 (of 5 total)

  • I am looking for this information as well and it would be most welcome. If I find something on other sites I will post it here as well.

    Yeah, I have the same dilemma ?? I’ve been digging around but had no luck!

    I am looking for the same thing, especially a way to detect a Network Activate and stop users from activating my plugin that way, anyone have any ideas?

    Hi,

    I also cannot find a way to tell wordpress whether the plugin could be activated.

    However I am about to release a new version of myEASYbackup and added the following code at the beginning of the main script:

    if(is_admin() && version_compare(PHP_VERSION, '5', '<')) {

	/**
	 * @since 1.0.5.6
	 */
	function myeasy_min_reqs() {

		echo '<div class="error">'
				. '<h3>' . __( 'Warning! It is not possible to activate this plugin as it requires PHP5 and on this server the PHP version installed is: ', MEBAK_LOCALE )
					. '<b>'.PHP_VERSION.'</b></h3>'
				. '<h3><a href="https://www.php.net/releases/#v4" target="_blank">' . __( 'PHP4 was discontinued by the PHP development team on December, 31 2007 !!', MEBAK_LOCALE ) .'</a>'
					. '</h3>'
				. '<p>' . __( 'For security reasons we <b>warmly suggest</b> that you contact your hosting provider and ask to update your account to PHP5.', MEBAK_LOCALE )
					. '</p>'
				. '<p>' . __( 'If they refuse for whatever reason we suggest to <b>change provider as soon as possible</b>.', MEBAK_LOCALE )
					. '</p>'
			.'</div>'
		;

		$plugins = get_option('active_plugins');
		$out = array();
		foreach($plugins as $key => $val) {

			if($val != 'myeasybackup/myeasybackup.php') {

				$out[$key] = $val;
			}
		}

		update_option('active_plugins', $out);
	}
	add_action('admin_head', 'myeasy_min_reqs');

	return;
}

    Now, every time the plugin is activated, it will show a warning message and automatically deactivate itself.

    Maybe not an elegant solution but it works.

    Sorry, I forgot some explanations.

    The new version of my plugin requires PHP5 so,

    If we are within the admin panel and the code is running on a previous PHP version:
    if(is_admin() && version_compare(PHP_VERSION, '5', '<')) {

    I loop into the active plugins array:
    foreach($plugins as $key => $val) {

    if its not my plugin:
    if($val != 'myeasybackup/myeasybackup.php') {

    I copy the plugin in the output array:
    $out[$key] = $val;

    then its simply matter to update the active_plugins option:
    update_option('active_plugins', $out);

    Hope it helps and, if you find a better solution, please share it!

Viewing 5 replies - 1 through 5 (of 5 total)
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