Why does a variable work on the front page but return NULL on all other pages?

Hi @orbit82:

Searching through the code in WordPress v3.0.4 I was unable to find any references to a global $sidebar_id so I am assuming that either your theme is setting it on the front page or a plugin you are using is setting it. Can you verify?

What’s more, I would definitely echo @prettyboymp’s comment that you should look to use the conditional tags like is_single() and is_archive(); is there a reason they won’t work for you? Here’s a reference on the WordPress Codex for what conditional tags are available in WordPress:

Related Posts:

  1. Error: “Cannot modify the return value” c#
  2. Python conditional assignment operator
  3. C++ identifier is undefined
  4. What is the PHP syntax to check “is not null” or an empty string?
  5. ISO C90 forbids mixed declarations and code in C
  6. Which variable size to use (db, dw, dd) with x86 assembly?
  7. Why SQL Server throws Arithmetic overflow error converting int to data type numeric?
  8. Character constant too long for its type
  9. What is the meaning of @_ in Perl?
  10. What is the meaning of @_ in Perl?
  11. Passing a variable to get_template_part
  12. What are all the Properties of the WordPress Post Object?
  13. Passing variables from header.php to template and vice verca
  14. When to use global $post and other global variables?
  15. WordPress variables and memory
  16. How to create custom variables in the wp-config
  17. Set cookie using GET variable
  18. {{ Double Curly Brace }} data.____ Variable Source in WP_Playlist Template
  19. What is the best way to store custom variables
  20. Setting Cookie Using a Variable from the URL
  21. WordPress filtering utm_ GET variables from url unless logged in as admin, not sure why?
  22. Using variable in two functions
  23. What is the $current_screen global variable?
  24. Print string to footer using wp_footer option
  25. How to pass data around?
  26. How do I pass variables into short-code enabled Post Snippets in WordPress 3.0?
  27. Replacing string with a variable in php
  28. Variable scope producing undefined variable notices in included files
  29. Use to track referrals
  30. Can you keep session data for visitors?
  31. Changing static text in a theme into variable content that also respects language. Easiest way
  32. Result of API Request to global variable?
  33. Best way to pass variables around a WordPress site?
  34. How do I share variables between two functions?
  35. What is the use of $content_width?
  36. Passing a variable from a FOREACH loop in a link
  37. What does the Global Variable $s represent?
  38. Get current page id, title, url, etc
  39. keep a variable for all pages in memory from the url
  40. Retrieve custom variable
  41. Pushing Category and Publish Date to Google Analytics
  42. Trying to create an edit page link?
  43. Cron Job variable not accessible
  44. No access to global variables?
  45. How to access a variable on all page?
  46. Not passing correct value to get_post_ancestors?
  47. Help me edit a variable with php
  48. SFTP define in wp-config.php
  49. Preventing Duplicating Posts from Widgets
  50. saving variables after redirect
  51. WP CLI – Pass Query / URL Variable to Cron?
  52. Use a select box to change a php variable
  53. Can’t access a variable defined in another template despite using GLOBAL
  54. How to pass a variable for key/value pairs in an argument?
  55. Where and how to define variables for URLs etc
  56. How to get variable from function.php to loop file
  57. Pass variable to next page
  58. passing javascript variable into php wordpress
  59. Remove # from a Variable [closed]
  60. How to pass post title (which could include &) to Gravity Form
  61. Variables posting twice
  62. Passing variables trough 2 pages
  63. update_option using variable name
  64. assign the returned value of wordpress function to a variable?
  65. Pass var into wp function instead of direct string text
  66. How do I echo saved data outside the function?
  67. Having problems accessing $_GET values
  68. How to pass variable to functions.php?
  69. Creating a Variable Product
  70. C++ — expected primary-expression before ‘ ‘
  71. Non-static variable cannot be referenced from a static context
  72. Printing variables in Python 3.4
  73. How to modify a global variable within a function in bash?
  74. C++ Global variable declaration
  75. WordPress get_template_part pass variable
  76. wp_localize_script with boolean and init
  77. Passing variables to new page
  78. How does the $post_type global variable work?
  79. Locating Global Variables
  80. How to put a variable in a instance in the widget
  81. How to modify a global variable in a function and use it on another function?
  82. Get custom post type’s fields in a while loop as variables
  83. Creating WordPress Shortcode with Variable
  84. category__not_in and id values from variable
  85. Function that replaces the image in the absence of the post meta
  86. Undefined variable error in new function
  87. Passing variable from child theme function to parent theme filter
  88. Is it possible to pass variables to WordPress externally?
  89. Do I Need to Prefix Variables Inside Functions?
  90. get_term_by with a variable
  91. How to send a php var to jQuery Ajax call with two different file
  92. Best way to use variables in multiple functions?
  93. How to access custom class methods from any include without using global
  94. Get specific value from variable to use in query
  95. How do I create settings only used by my theme? [closed]
  96. Editing Global Variables from Inside Functions
  97. Variable undefined but it is defined
  98. WordPress loop: Display if posts exist
  99. Need help, Passing variables with get_post_meta
  100. Dynamic header and footer template inclusion: footer script not included
techhipbettruvabetnorabahisbahis forumutaraftarium24eduseduedusedueduedusedusedueduedus