---
layout: default
title: WP_CLI::warning()
description: "Display warning message prefixed with &quot;Warning: &quot;."
---

<small><a href="/docs/">Docs</a> &raquo; <a href="/docs/internal-api/">Internal API</a> &raquo; Output</small>

## WP_CLI::warning()

Display warning message prefixed with &quot;Warning: &quot;.

***

### Usage

    WP_CLI::warning( $message )

<div>
<strong>$message</strong> (string) Message to write to STDERR.<br />
<strong>@return</strong> (null) <br />
</div>


***

### Notes

Warning message is written to STDERR.

Use instead of `WP_CLI::debug()` when script execution should be permitted
to continue.


    # `wp plugin activate` skips activation when plugin is network active.
    $status = $this->get_status( $plugin->file );
    // Network-active is the highest level of activation status
    if ( 'active-network' === $status ) {
    	WP_CLI::warning( "Plugin '{$plugin->name}' is already network active." );
    	continue;
    }
    


*Internal API documentation is generated from the WP-CLI codebase on every release. To suggest improvements, please submit a pull request.*


***

### Related

<ul>



<li><strong><a href="/docs/internal-api/wp-cli-utils-format-items/">WP_CLI\Utils\format_items()</a></strong> - Render a collection of items as an ASCII table, JSON, CSV, YAML, list of ids, or count.</li>


<li><strong><a href="/docs/internal-api/wp-cli-utils-make-progress-bar/">WP_CLI\Utils\make_progress_bar()</a></strong> - Create a progress bar to display percent completion of a given operation.</li>


<li><strong><a href="/docs/internal-api/wp-cli-colorize/">WP_CLI::colorize()</a></strong> - Colorize a string for output.</li>


<li><strong><a href="/docs/internal-api/wp-cli-line/">WP_CLI::line()</a></strong> - Display informational message without prefix, and ignore `--quiet`.</li>


<li><strong><a href="/docs/internal-api/wp-cli-log/">WP_CLI::log()</a></strong> - Display informational message without prefix.</li>


<li><strong><a href="/docs/internal-api/wp-cli-success/">WP_CLI::success()</a></strong> - Display success message prefixed with &quot;Success: &quot;.</li>


<li><strong><a href="/docs/internal-api/wp-cli-debug/">WP_CLI::debug()</a></strong> - Display debug message prefixed with &quot;Debug: &quot; when `--debug` is used.</li>


<li><strong><a href="/docs/internal-api/wp-cli-error/">WP_CLI::error()</a></strong> - Display error message prefixed with &quot;Error: &quot; and exit script.</li>


<li><strong><a href="/docs/internal-api/wp-cli-halt/">WP_CLI::halt()</a></strong> - Halt script execution with a specific return code.</li>


<li><strong><a href="/docs/internal-api/wp-cli-error-multi-line/">WP_CLI::error_multi_line()</a></strong> - Display a multi-line error message in a red box. Doesn't exit script.</li>



</ul>


