I wanted to add in theme customizer textarea where user can add footer copyright text. Usually those sections contains link such are site url or email url. So I had problem how to output text with links as all I get was html tags convert into text signs. So instead getting this:
Copyright 2018, Valeka.net | Email: support@valeka.net
I get this:
Copyright 2018, Valeka.net | Email: <a href="mailto:support@valeka.net">support@valeka.net </a>
And here is how I solve problem. First you would see part of code from functions.php file. Note that for sanitize_callback I used wp_kses_post. That means that only html tags that would be applied trough post/page text editor can be used here.
function basic_customize_register( $wp_customize ) {
//Copyright -----------------------------------------------------
$wp_customize->add_section('copyright_options', array(
'title' => __('Copyright', 'valeka'),
'priority' => 121,
));
$wp_customize->add_setting('copyright', array( 'default' => '', 'type' => 'theme_mod', 'sanitize_callback' => 'wp_kses_post', 'transport' => 'refresh'));
$wp_customize->add_control( 'copyright', array(
'settings' => 'copyright',
'label' => 'Enter Copyright Text',
'section' => 'copyright_options',
'type' => 'textarea'
));
}
add_action( 'customize_register', 'basic_customize_register' );
This is how it looks when we use saved html text in footer.php file. Just simple display variable with echo.
<?php
$copyright = get_theme_mod('copyright');
if(!isset($copyright) || !empty($copyright)) { ?>
<div class="copyright">
<?php echo($copyright); ?>
</div>
<?php } ?>
More info about customizer sanitization you can find on divpusher.com.