get_field_reference

Get_field_reference().

Description

get_field_reference( (string) $field_name, $post_id );

This function will find the $field_key that is related to the $field_name. This is know as the field value reference

Parameters (2)

0. $field_name (string): The field name.
1. $post_id: The post id.

Usage

if ( !function_exists( 'get_field_reference' ) ) { 
    require_once ABSPATH . PLUGINDIR . 'advanced-custom-fields/core/api.php'; 
} 
  
// The field name. 
$field_name = ''; 
  
// The post id. 
$post_id = null; 
  
// NOTICE! Understand what this does before running. 
$result = get_field_reference($field_name, $post_id);

Defined (1)

The function is defined in the following location(s).

/core/api.php

function get_field_reference( $field_name, $post_id ) { 
     
    // cache 
    $found = false; 
    $cache = wp_cache_get( 'field_reference/post_id=' .  $post_id . '/name=' .  $field_name, 'acf', false, $found ); 
 
    if( $found ) 
    { 
        return $cache; 
    } 
     
     
    // vars 
    $return = ''; 
 
     
    // get field key 
    if( is_numeric($post_id) ) 
    { 
        $return = get_post_meta($post_id, '_' . $field_name, true);  
    } 
    elseif( strpos($post_id, 'user_') !== false ) 
    { 
        $temp_post_id = str_replace('user_', '', $post_id); 
        $return = get_user_meta($temp_post_id, '_' . $field_name, true);  
    } 
    else 
    { 
        $return = get_option('_' . $post_id . '_' . $field_name);  
    } 
     
     
    // set cache 
    wp_cache_set( 'field_reference/post_id=' .  $post_id . '/name=' .  $field_name, $return, 'acf' ); 
         
     
    // return     
    return $return; 
}