Shortcode

— source: https://wp-tutorials.tech/add-functionality/access-a-rest-api-from-wordpress/

<?php
 
// If this file is called directly, abort.
defined('WPINC') || die();
 
function do_shortcode_MONSHORTCODE($atts) {
    $html = '<div id="#info_societaire">';
    if (is_admin()) {
        // ...
    } elseif (wp_doing_ajax()) {
        // ...
    } else {
        // Parse the shortcode's options.
        $args = shortcode_atts(
            array(
                // 'ipsum' => '',
                // 'paragraphs' => FIS_DEFAULT_IPSUM_PARAGRAPHS,
                'debug' => false,
            ),
            $atts
        );
 
        if ( !is_user_logged_in() ) 
            return "";
 
        //$html.="id: ".get_current_user_id();
        $numper = get_user_meta( get_current_user_id(), 'meta_name', true);
 
        if ( empty($numper) ) 
            return "meta non trouvée";
 
 
        $url = 'https://site.com/api/?numper='.$numper;
 
        // Create a Curl Handle.
        $curl = curl_init();
        // Standard PHP/Curl options for a simple GET request.
        curl_setopt_array($curl, [
            CURLOPT_URL            => $url,
            CURLOPT_SSL_CIPHER_LIST => 'DEFAULT@SECLEVEL=1',
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_ENCODING => "",
            CURLOPT_MAXREDIRS => 10,
            CURLOPT_TIMEOUT => 30,
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => "GET",
        ]);
        // Execute the request.
        $json_response = curl_exec($curl);
        $err = curl_error($curl);
 
        // Close the Curl Handle.
        curl_close($curl);
 
        if ($err) {
            $html .= '';
        } elseif (empty($json_response)) {
            // No data returned from the server.
            $html .= '';
        } elseif (boolval($args['debug'])) {
            // Render the raw JSON response.
            $html .= '<pre>';
            $html .= sprintf("HTTP_RESPONSE=%d\n", $response_code);
            $html .= sprintf("%s", $json_response);
            $html .= '</pre>';
        } elseif (empty($data = json_decode($json_response))) {
            $html .= sprintf(
                '<p><strong>ERROR:</strong> Failed to process the JSON response.</p><pre>%s</pre>',
                esc_html($json_response)
            );
        } else {
            if( !isset($data->result) or $data->result != 'OK' )
                $html.="<p>Données indisponible</p>";
            else{
                $html.="";
            }
        }
    }
    $html.="</div>";
    return $html;
}
add_shortcode('MONSHORTCODE', 'do_shortcode_MONSHORTCODE');

Exécuter le shortcode dans un template

<?php echo do_shortcode("[shortcode]"); ?>