I want to split this into two functions

You can separate it into two functions by using following code :

<?php

add_action('tmpl_detail_page_custom_fields_collection','custom_fields_colletion');

/*
Name : custom_fields_colletion
Desc : Return the custom fields collection for detail/single page
*/
function custom_fields_colletion()
{
global $wpdb,$post,$detail_post_type;
$detail_post_type = $post->post_type;
if(isset($_REQUEST['pid']) && $_REQUEST['pid'])
{
$cus_post_type = get_post_type($_REQUEST['pid']);
$PostTypeObject = get_post_type_object($cus_post_type);
$PostTypeLabelName = $PostTypeObject->labels->name;
$single_pos_id = $_REQUEST['pid'];
}
else
{   
$cus_post_type = get_post_type($post->ID);
$PostTypeObject = get_post_type_object($cus_post_type);
$PostTypeLabelName = $PostTypeObject->labels->name;
$single_pos_id = $post->ID;
}
$heading_type = fetch_heading_per_post_type($cus_post_type);
remove_all_actions('posts_where');
$post_query = null;
if(count($heading_type) > 0)
{ 
foreach($heading_type as $_heading_type)
 {
    $args =
    array( 'post_type' => 'custom_fields',
    'posts_per_page' => -1  ,
    'post_status' => array('publish'),
    'meta_query' => array(
       'relation' => 'AND',
        array(
            'key' => 'post_type_'.$cus_post_type.'',
            'value' => $cus_post_type,
            'compare' => '=',
            'type'=> 'text'
        ),
        array(
            'key' => 'show_on_page',
            'value' =>  array('user_side','both_side'),
            'compare' => 'IN'
        ),
        array(
            'key' => 'is_active',
            'value' =>  '1',
            'compare' => '='
        ),
        array(
            'key' => 'heading_type',
            'value' =>  $_heading_type,
            'compare' => '='
        ),
        array(
            'key' => 'show_on_detail',
            'value' =>  '1',
            'compare' => '='
        )
    ),
        'meta_key' => 'sort_order',
        'orderby' => 'meta_value_num',
        'meta_value_num'=>'sort_order',
        'order' => 'ASC'
    );
$post_query = new WP_Query($args);

$post_meta_info = $post_query;
$suc_post = get_post($single_pos_id);

        if($post_meta_info->have_posts())
          {
            echo "<div class="grid02 rc_rightcol clearfix">";
            echo "<ul class="list">";
              $i=0;
            while ($post_meta_info->have_posts()) : $post_meta_info->the_post();
                $field_type = get_post_meta($post->ID,"ctype",true);

                if($i==0)
                {
                    if($post->post_name!='post_excerpt' && $post->post_name!='post_content' && $post->post_name!='post_title' && $post->post_name!='post_images' && $post->post_name!='post_category')
                    {
                        if($_heading_type == "[#taxonomy_name#]"){
                            echo "<li><h2>";_e(ucfirst($PostTypeLabelName),DOMAIN);echo ' '; _e("Information",DOMAIN);echo "</h2></li>";
                        }else{
                            echo "<li><h2>".$_heading_type."</h2></li>";
                        }
                    }
                    $i++;
                }

                    if(get_post_meta($single_pos_id,$post->post_name,true))
                      {
                        if(get_post_meta($post->ID,"ctype",true) == 'multicheckbox')
                          {
                            $_value = "";
                            foreach(get_post_meta($single_pos_id,$post->post_name,true) as $value)
                             {
                                $_value .= $value.",";
                             }
                             echo "<li class="".$post->post_name.""><p>".$post->post_title." : </p> <p> ".substr($_value,0,-1)."</p></li>";
                          }else if($field_type =='radio' || $field_type =='select'){

                                $options = explode(',',get_post_meta($post->ID,"option_values",true));
                                $options_title = explode(',',get_post_meta($post->ID,"option_title",true));

                                for($i=0; $i<= count($options); $i++){
                                     $val = $options[$i];
                                    if(trim($val) == trim(get_post_meta($single_pos_id,$post->post_name,true))){
                                        $val_label = $options_title[$i];

                                    }
                                }

                                if($val_label ==''){ $val_label = get_post_meta($single_pos_id,$post->post_name,true); } // if title not set then display the value

                                echo "<li><p>".$post->post_title." : </p> <p> ".$val_label."</p></li>";


                          }
                        else
                         {
                             if(get_post_meta($post->ID,'ctype',true) == 'upload')
                             {
                                echo "<li class="".$post->post_name.""><p>".$post->post_title." : </p> <p> Click here to download File <a href="https://wordpress.stackexchange.com/questions/113140/.get_post_meta($single_pos_id,$post->post_name,true).">Download</a></p></li>";
                             }
                             else
                             {
                                 echo "<li class="".$post->post_name.""><p>".$post->post_title." : </p> <p> "https://wordpress.stackexchange.com/questions/113140/.get_post_meta($single_pos_id,$post->post_name,true)."</p></li>";
                             }
                         }
                      }
                    if($post->post_name == 'post_excerpt' && $suc_post->post_excerpt!='')
                     {
                        $suc_post_excerpt = $suc_post->post_excerpt;
                        ?>
                             <li>
                             <div class="row">
                                <div class="twelve columns">
                                     <div class="title_space">
                                         <div class="title-container">
                                             <h1><?php _e('Post Excerpt',DOMAIN);?></h1>
                                             <div class="clearfix"></div>
                                         </div>
                                         <?php echo $suc_post_excerpt;?>
                                     </div>
                                 </div>
                             </div>
                             </li>
                        <?php
                     }

                    if(get_post_meta($post->ID,"ctype",true) == 'geo_map')
                     {
                        $add_str = get_post_meta($single_pos_id,'address',true);
                        $geo_latitude = get_post_meta($single_pos_id,'geo_latitude',true);
                        $geo_longitude = get_post_meta($single_pos_id,'geo_longitude',true);
                        $map_view = get_post_meta($single_pos_id,'map_view',true);
                     }
            endwhile;wp_reset_query();
            echo "</ul>";
            echo "</div>";
          }
   }
}

if(isset($suc_post_con)):
do_action('templ_before_post_content');/*Add action for before the post content. */?>
     <div class="row">
        <div class="twelve columns">
             <div class="title_space">
                 <div class="title-container">
                     <h1><?php _e('Post Description', DOMAIN);?></h1>
                  </div>
                 <?php echo $suc_post_con;?>
             </div>
         </div>
     </div>
<?php do_action('templ_after_post_content'); /*Add Action for after the post content. */
endif;
}


add_action('tmpl_detail_page_gmap_collection','gmap_colletion');

/*
Name : gmap_colletion
Desc : Return the gmap collection for detail/single page
*/
function gmap_colletion()
{
global $wpdb,$post,$detail_post_type;
$detail_post_type = $post->post_type;
if(isset($_REQUEST['pid']) && $_REQUEST['pid'])
{
$cus_post_type = get_post_type($_REQUEST['pid']);
$PostTypeObject = get_post_type_object($cus_post_type);
$PostTypeLabelName = $PostTypeObject->labels->name;
$single_pos_id = $_REQUEST['pid'];
}
else
{   $cus_post_type = get_post_type($post->ID);
$PostTypeObject = get_post_type_object($cus_post_type);
$PostTypeLabelName = $PostTypeObject->labels->name;
$single_pos_id = $post->ID;
}
$heading_type = fetch_heading_per_post_type($cus_post_type);
remove_all_actions('posts_where');
$post_query = null;

if(count($heading_type) <= 0){
$args =
array( 'post_type' => 'custom_fields',
'posts_per_page' => -1  ,
'post_status' => array('publish'),
'meta_query' => array(
   'relation' => 'AND',
    array(
        'key' => 'post_type_'.$cus_post_type.'',
        'value' => $cus_post_type,
        'compare' => '=',
        'type'=> 'text'
    ),
    array(
        'key' => 'is_active',
        'value' =>  '1',
        'compare' => '='
    ),
    array(
        'key' => 'show_on_detail',
        'value' =>  '1',
        'compare' => '='
    )
),
    'meta_key' => 'sort_order',
    'orderby' => 'meta_value',
    'order' => 'ASC'
);
$post_query = new WP_Query($args);
$post_meta_info = $post_query;
$suc_post = get_post($single_pos_id);
if($post_meta_info->have_posts())
{
    $i=0;
    /*Display the post_detail gheading only one time also with if any custom field create. */
    while ($post_meta_info->have_posts()) : $post_meta_info->the_post();
        if($i==0)
        if($post->post_name != 'post_excerpt' && $post->post_name != 'post_content' && $post->post_name != 'post_title' && $post->post_name != 'post_images' && $post->post_name != 'post_category')
        {
            echo '<div class="title-container clearfix">';
            //echo '<h1>'.POST_DETAIL.'</h1>';
            $CustomFieldHeading = apply_filters('CustomFieldsHeadingTitle',POST_DETAIL);

            if(function_exists('icl_register_string')){
                icl_register_string(DOMAIN,$CustomFieldHeading,$CustomFieldHeading);
            }

            if(function_exists('icl_t')){
                $CustomFieldHeading1 = icl_t(DOMAIN,$CustomFieldHeading,$CustomFieldHeading);
            }else{
                $CustomFieldHeading1 = __($CustomFieldHeading,DOMAIN);
            }
            echo '<h3>'.$CustomFieldHeading1.'</h3>';

            echo '</div>';
            $i++;
        }
    endwhile;wp_reset_query();  //Finish this while loop for display POST_DETAIL
      ?>
<?php echo "<div class="grid02 rc_rightcol clearfix">";
        echo "<ul class="list">";
        if($_heading_type!="")
            echo "<h3>".$_heading_type."</h3>";

    while ($post_meta_info->have_posts()) : $post_meta_info->the_post();
            if(get_post_meta($single_pos_id,$post->post_name,true))
              {
                if(get_post_meta($post->ID,"ctype",true) == 'multicheckbox')
                  {
                    foreach(get_post_meta($single_pos_id,$post->post_name,true) as $value)
                     {
                        $_value .= $value.",";
                     }
                     echo "<li><p class="tevolution_field_title">".$post->post_title.": </p> <p class="tevolution_field_value"> ".substr($_value,0,-1)."</p></li>";
                  }
                else
                 {
                     echo "<li><p class="tevolution_field_title">".$post->post_title.": </p> <p class="tevolution_field_value"> "https://wordpress.stackexchange.com/questions/113140/.get_post_meta($single_pos_id,$post->post_name,true)."</p></li>";
                 }
              }
            if($post->post_name == 'post_excerpt' && $suc_post->post_excerpt!="")
             {
                $suc_post_excerpt = $suc_post->post_excerpt;
                ?>
                   <li>
                   <div class="row">
                      <div class="twelve columns">
                           <div class="title_space">
                               <div class="title-container">
                                   <h1><?php _e('Post Excerpt');?></h1>
                                   <div class="clearfix"></div>
                               </div>
                               <?php echo $suc_post_excerpt;?>
                           </div>
                       </div>
                   </div>
                   </li>
          <?php
             }

            if(get_post_meta($post->ID,"ctype",true) == 'geo_map')
             {
                $add_str = get_post_meta($single_pos_id,'address',true);
                $geo_latitude = get_post_meta($single_pos_id,'geo_latitude',true);
                $geo_longitude = get_post_meta($single_pos_id,'geo_longitude',true);
             }

    endwhile;wp_reset_query();
    echo "</ul>";
    echo "</div>";
  }
}

    $tmpdata = get_option('templatic_settings');
    $show_map='';
    if(isset($tmpdata['map_detail_page']) && $tmpdata['map_detail_page']=='yes')
        $show_map=$tmpdata['map_detail_page'];
    if(isset($add_str) && $add_str != '')
    {
    ?>
        <div class="row">
            <div class="title_space">
                <div class="title-container">
                    <h1><?php _e('Map',DOMAIN); ?></h1>
                </div>
                <p><strong><?php _e('Location : '); echo $add_str;?></strong></p>
            </div>

               <?php if($geo_latitude && $geo_longitude ):?>
                                                             <!-- Location Map-->
                <div id="location_map">
                      <div class="google_map" id="detail_google_map_id">
                        <?php include_once ('google_map_detail.php');?>
                      </div>                                 <!-- google map #end -->
                </div>

            <?php endif;?>
        </div>
    <?php }

}
?>

and you can call it using :

<!--Custom field collection do action -->
<?php do_action('tmpl_detail_page_custom_fields_collection');  ?>

<!--GMap collection do action -->
<?php do_action('tmpl_detail_page_gmap_collection');  ?>

Related Posts:

  1. clients list using wordpress
  2. echo value from ‘select’ field type into page template using cmb2?
  3. Detect meta value changes when post is updated (post_updated)
  4. Search everything (posts, pages, tags, cpt, meta)
  5. Automatically assign a custom post to a custom taxonomy based on custom field value
  6. Saving multiple Metabox contents
  7. How to add the post ID (or any other post data) to a Contact Form 7 mail?
  8. Create a post in custom post type using field in registration form after users submit form
  9. Copy custom field value to post title
  10. How to implement a Google map store locator
  11. get_post_meta not working on publishing
  12. Homepage’s content is dependent on the custom field values (set automatically), how do I get homepage to update without manually updating page?
  13. Cannot save CPT meta box
  14. How to add multiple markers on the google map, at a certain meta_key and meta_value
  15. Warning: Invalid argument supplied for foreach() [closed]
  16. ACF in wordpress
  17. How to inherit field value from parent post into in child / sub post
  18. Custom post type in Custom widget – $listItem
  19. Let users upload image(s) to the post from front end
  20. Excerpt length: get first paragraph
  21. Custom Form / Search with Custom Post Type Data
  22. How to convert Post Object Custom Field into Tags
  23. Problem with multi checkboxes value in metabox?
  24. Populate custom post type/custom fields from an external database
  25. Custom Field to post_title
  26. Function not pulling image or text from custom post type
  27. Allow authors to create article image
  28. How to grab data (titles, thumbnails and custom fields) from multiple posts to populate a new array efficiently?
  29. How to display *block number* instead *date value* on WordPress posts?
  30. Help Creating a Slideshow Custom Post Type with Custom Meta Boxes?
  31. Search multiple custom fields by using meta_query
  32. Custom Post Type – Taxonomy Dropdown Menu?
  33. How I check if the same post slug has not been used before publishing?
  34. How to sort a table of custom posts by column containing custom field
  35. Issue with saving custom post type when editor is removed
  36. How do I add a custom post type to the Featured Content in twenty fourteen theme?
  37. convert Custom Fields Option-Values to Tags/Taxonomy
  38. Custom post type loops with different page templates
  39. Multiple Content Block
  40. Automatically Insert Custom Field on Custom Post Type Publish
  41. Allow Users Access to Custom Post Type Only
  42. Display custom post types with custom date field value (before today) & order by custom date field
  43. How to have the right design for a custom post type without accessing themes
  44. WordPress custom meta field for custom post not storing data
  45. Conditional regex in add_rewrite_rule() for specific query filters & pagination
  46. How to Duplicate (multiple meta box)?
  47. List all images from a single post meta value
  48. WP_Query: include custom post type only with specific meta value
  49. Is there a way to get a file URL from the relationship ACF field?
  50. How can I dynamically add a post to a custom post type which uses a custom field?
  51. Random image from tag/custom type on sidebar
  52. Query & Order posts by custom fields
  53. Update Post Meta for a logged in user
  54. Problem querying Custom post type by custom fields
  55. How to target a specific custom post type post and its all children and grandchildren?
  56. Using custom field content as expression in IF statement [closed]
  57. ACF From & To Date Validations
  58. Query Multiple Custom Posts by Custom Fields
  59. Custom REST endpoints for a custom post type with custom fields
  60. frontend image post uploader
  61. Show fields based on taxonomy selection in editor
  62. Permalinks: custom structure for taxonomy – tags?
  63. How to Get the title of a custom field?
  64. Loop increase number
  65. How to customize work area / admin area in a custom post type without plugins?
  66. Creating custom post type with custom taxonomy and custom fields programatically
  67. hide specific div on single.php [closed]
  68. How do you output an unknown number of images in a custom post type with desired markup?
  69. Custom post type’s posts are not showing anywere but in xml sitemap
  70. Show current user posts in custom post type query
  71. posttype and custom fields on multisite
  72. Custom Fields not showing up for custom post type
  73. Displaying information from custom field on custom post type
  74. Add a class to post_class if more than one post shares same meta_value_num
  75. Add a meta field to the list of results for a custom post type
  76. Order custom posts by taxonomy, then by meta_key
  77. Custom fields for post or terms which don’t update on post update
  78. set object terms after some some time of published post – functions.php
  79. Is there a way to use ‘publicly_queryable’ => false only on specific taxonomy term?
  80. Updating a custom post status after an expiry date rather than trashing it
  81. Urgent – WordPress keeps creating posts
  82. How to add dynamic fields on wordpress custom post type page in admin section
  83. Creating an archive page or simple template to list all values of a custom field of specific post type listing
  84. ACF field check value of field on all other articles
  85. Query posts by multiple custom fields
  86. Run query on specific admin options page and send results to select field in another function
  87. get_previous_post_link and get_next_post_link of custom post type that share custom field value
  88. Automatically assign posts with custom field to taxonomy term
  89. How to sort custom post’s category by id from the theme’s function.php?
  90. Attach several custom posts to one meta field
  91. Show first posts with custom field not empty and order all by title
  92. How to add post reference field to a plugin?
  93. Query custom post type and showing its content
  94. Repeatable Custom Field for Media Upload
  95. How to store datetime from custom meta box so that it can be sorted by
  96. Add HTML before a specific div?
  97. Custom Post type easy way for editors
  98. Adding a custom field after post title (ex.Example Title [30 Second Read])
  99. Post object GUID adding http:/
  100. Query order by a numeric ACF field