command.php

<?php

# Check Exist WP-CLI
if (! class_exists('WP_CLI')) {
    return;
}

/**
 * Wordpress Code Reference.
 *
 * ## OPTIONS
 *
 * [<search>]
 * : Search Keyword.
 *
 * [--function=<name>]
 * : Search Function name in WordPress Code Reference.
 *
 * [--class=<name>]
 * : Search Class name in WordPress Code Reference.
 *
 * [--hook=<name>]
 * : Search Hook name in WordPress Code Reference.
 *
 * [--method=<name>]
 * : Search Method name in WordPress Code Reference.
 *
 * [--clear]
 * : clear WordPress Reference Cache.
 *
 * [--browser]
 * : Show WordPress Code Reference in browser.
 *
 * ## EXAMPLES
 *
 *      # Search between WordPress function or class and show document.
 *      $ wp reference absint
 *
 *      # Search in WordPress Code.
 *      $ wp reference get_userdata
 *
 *      # Search only in WordPress functions.
 *      $ wp reference --function=wp_insert_user
 *
 *      # Search only in WordPress class.
 *      $ wp reference --class=wp_user
 *
 *      # Search only in WordPress hook.
 *      $ wp reference --hook=admin_footer
 *
 *      # search only in WordPress method.
 *      $ wp reference --method=get_row
 *
 *      # Remove All WordPress Reference Cache.
 *      $ wp reference --clear
 *      Success: Cache cleared.
 *
 *      # Show code reference in web browser
 *      $ wp reference --browser
 *
 * @when before_wp_load
 */
\WP_CLI::add_command('reference', function ($args, $assoc_args) {
    # init Reference Class
    $reference = new Reference_Command();

    # Clear Cache
    if (isset($assoc_args['clear'])) {
        $reference->runClearCache();
        # Show in browser
    } elseif (isset($assoc_args['browser'])) {
        $reference->runBrowser();
        # Search
    } else {
        //Prepare Word
        $word = '';
        if (isset($args[0])) {
            $word = $args[0];
        }

        //Show Loading
        WP_CLI_Helper::pl_wait_start();

        //Custom Search
        $list          = array('function', 'class', 'hook', 'method');
        $custom_search = false;
        foreach ($list as $action) {
            if (isset($assoc_args[$action])) {
                $word = $assoc_args[$action];
                $reference->runSearch($word, array('source' => true, 'allowed_filter' => $action));
                $custom_search = true;
                break;
            }
        }

        //Common Search
        if (! $custom_search) {
            $reference->runSearch($word, array('source' => true));
        }
    }
});