Why does re-using this function not work? [closed]

Function “works” once because before first call of is_service_class(), function is_personal not exists and whole this block is executed

if ( ! function_exists( 'is_personal' ) ) { 
    // declaration and use of function
}

In next call of is_service_class() is_personal is declared and the entire block is skipped. Inside the condition if ( !function_exists( 'is_personal' ) ) leave only the declaration: 

if ( !function_exists( 'is_personal' ) ) { 

    function is_personal() {
        return ( is_post_type_archive('pk-personal') || is_singular( 'pk-personal' ) || is_page( array( 6814, 'personal-family', 'Personal & Family Services' ) ) ) ? true : false ;
    }
}
if ( is_personal() ) {
    echo 'personal-service'; 
}

Similary is with is_business().

I would suggest this form:

if ( !function_exists( 'is_service_class' ) ) {

    function is_service_class () {

        if ( is_personal() ) {
            echo 'personal-service'; 
        } 
        if ( is_business() ) {
            echo 'business-service'; 
        } 
    }
}

if ( !function_exists( 'is_personal' ) ) { 

    function is_personal() {
        return ( is_post_type_archive('pk-personal') || is_singular( 'pk-personal' ) 
            || is_page( array( 6814, 'personal-family', 'Personal & Family Services' ) ) ) ? true : false ;
    }
}
if ( !function_exists( 'is_business' ) ) {

    function is_business() {
        return ( is_post_type_archive('pk-business')  || is_singular( 'pk-business' ) 
            || is_page( array( 6821, 'business-services', 'Business Services' ) ) ) ? true : false ;
    }
}

Related Posts:

  1. Import WordPress XML File from Within Functions.php
  2. Define custom Page Template without its own .php file
  3. Does hooking into the same action multiple times drain memory?
  4. Extract image from content and set it as the featured image
  5. Issue with get_theme_mod returning a blank value instead of the saved value
  6. Show modified time if post is actually modified
  7. why doesnt is_home() work in functions.php
  8. How to create thumbnails for PDF uploads?
  9. Help me to understand wp_header() and wp_footer() functions
  10. How can I tell if I’m on a login page? [duplicate]
  11. In WooCommerce I need to modify the thankyou.php page [closed]
  12. How can I add an extra WooCommerce hook
  13. Remove Page Title from Static Frontpage
  14. How to override WordPress registration and insert an auto-generated username?
  15. Adding extra SVGs to TwentyNineteen child theme using class TwentyNineteen_SVG_Icons
  16. How do I change parameters without changing the core
  17. Is it possible to be more page/post specific with admin_enqueue_script?
  18. Issue adding text after short description on product pages Woocommerce [closed]
  19. Customize “the_posts_pagination” and put list instead div
  20. Increment price for Woocommerce Minicart [closed]
  21. Post thumbnail relative link and HTML modify
  22. How to preserve edits to Name or Slug of term when using wp_update_term on save?
  23. Accepted arguments value in hook functions
  24. Which action hook to use for function?
  25. Change size and crop medium_large images
  26. Gravity Forms – Using a Form to Pre-populate A Gravity Form [closed]
  27. Running a script before absolutely everything
  28. How to display post content instead of excerpt
  29. Add function to every post?
  30. Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘greenday_head’ not found or invalid function name
  31. Modify a function without editing template
  32. Problem only while using require_once() within functions.php
  33. Which action does wp_update_user triggers?
  34. How can I get my Script to work on the Login page?
  35. Trigger a custom function when option are saved in admin area
  36. Execute a ultimate member action when user role is updated
  37. Add other social networks to TwentyNineteen_SVG_Icons class in child theme?
  38. How to use wp_trash_post (or wp_delete_post) for deleting a (or all) post(s) from custom post type?
  39. What did I do wrong in my functions code, that will not change the “Get New Password” text to “Send It”?
  40. Get User Login Data (date, time… )
  41. Registration Hooks don’t appear to be working
  42. jQuery does not work
  43. Pass parameter to hooked function using custom page template
  44. Override the WordPress core function wp_referer_field
  45. How to return hook data when multiple parameters are present?
  46. Hook into a function without a hook?
  47. What is the text that appears beside the page titles in the list of pages in the WP admin?
  48. How to edit the Tags within the image file URLs?
  49. Is my code correct to enqueue CSS on a specific page?
  50. Can’t properly set the_title add_filter to show short_URL
  51. Control the srcset much more (not all sizes in it each time)
  52. How to add_filter html template to middle of content
  53. Filter yoast canonical add_action priority [closed]
  54. How do I hook into the container of wp_nav_menu?
  55. Remove links from the_content when using filters wp_trim_excerpt
  56. Is there a way to prevent a function/method from being called outside a specific hook?
  57. Auto log in hook is requiring a page refresh
  58. Function not working inside of a function in functions.php
  59. Adding code before post title with the_title produces weird results
  60. Add back in child theme what the parent theme removed with remove_action
  61. Writing a function to detect an event
  62. This code works, but the way I integrated it is breaking the media uploader. How can I integrate it properly?
  63. WordPress wraps span tags into p tags
  64. Changing where my author box is printed
  65. Add Adsense code between job listings – wp job manager plugin
  66. update_post_meta is Updating with two page id
  67. Replace admin header logo with an image
  68. How to conditionally add a widget via a hook in functions.php
  69. How to place a div inside a function that creates a div
  70. Filter for replacing the WP_query object for a given category
  71. How to add or delete default value theme options while activate and deactivate theme
  72. WordPress comment processing . Default unapproved comments detection before posting
  73. Warning at top of website & top menu gone
  74. Does hook have an effect on increasing the page load?
  75. Save_post – Warning: Cannot modify header information
  76. Populate acf-field, depending on block name
  77. How to use WP conditional tag in a functions.php with OCEANWP Theme?
  78. custom error message for empty username and password using authenticate filter not working
  79. How Do I Unhook This Parent Theme Function?
  80. Get post_author email for Zapier Integration
  81. How to add custom column into custom post, when field is select
  82. How can I stop the hook from breaking the login/logout function?
  83. WordPress hooks to call a function inside a construct
  84. WordPress undefined function error on using add_action() in functions.php
  85. How to echo the translated custom field?
  86. Function the_content
  87. save_post hook – headers already sent?
  88. Add custom fields after post/page title
  89. Force resize for all video content
  90. Unhook the comment form in Buddypress
  91. Why wp_ajax hooks doesn’t work?
  92. How can I append and prepend something to all post hyperlinks without using ::before or ::after? PHP hook solution?
  93. Why functions metaboxes is causing White Screen in Admin [closed]
  94. How to hook wp_mail to add a custom email as BCC for each sent email?
  95. image_size with respect to aspect ratios
  96. delete_term is not working properly with add_action()
  97. Get category of post inside save_post hook
  98. Create section wit form
  99. Log in and out using custom pages, no logout confirmation and redirects for logging in and out 2023
  100. Copy and Modified WooCommerce function is_coupon_valid [closed]
techhipbettruvabetnorabahisbahis forumutaraftarium24eduedusedusedueduseduseduseduedusedus