Overriding function parent theme in child theme - wordpress

Question

I have some functions to override in my child theme but keep on getting Cannot redeclare langs_content().
I used quite a few resources to troubleshoot and something that shoud be straight forward I can't work it out
<?php
function enqueue_parent_theme_style() {
wp_enqueue_style( 'parent-style', get_template_directory_uri().'/style.css' );
}
add_action( 'wp_enqueue_scripts', 'enqueue_parent_theme_style' );
function enqueue_child_theme_style() {
wp_enqueue_style( 'child-style', get_stylesheet_directory_uri().'/style.css' );
}
//require_once( get_stylesheet_directory() . '/functions.php');
add_action( 'wp_enqueue_scripts', 'enqueue_child_theme_style', 100 );
if ( ! function_exists( 'langs_content' ) ) {
/*
* My Awesome function is awesome
*
*/
function langs_content( $atts, $content = null ) // shortcode lang
{
$lang = the_lang();
extract( shortcode_atts( array(), $atts ) );
$langs_content = '';
if(in_array($lang, $atts))
{
$langs_content .= do_shortcode($content);
}
return $langs_content;
}
add_shortcode('lang', 'langs_content');
}
?>

Answer 1

Really simple ! Remove the shortcode from init hook then add your new one ;-)
Like this :
/******
* Inside parent functions.php (don't touch this!)
******/
function test_shortcode() {
return "Hello World from parent theme";
}
add_shortcode('test_shortcode', 'test_shortcode');
/******
* Inside child functions.php
******/
function child_test_shortcode()
{
return "Hello World from child theme";
}
function remove_parent_theme_shortcodes()
{
remove_shortcode('test_shortcode');
// Add our new function with the same shortcode
add_shortcode('test_shortcode', 'child_test_shortcode');
}
// Remove the shortcode with init hook
add_action('init', 'remove_parent_theme_shortcodes');