Getting Non-printable characters were found while entering Euro Symbol

I would try using the HTML Unicode versions to see if any of them work, and in the options, you could array them against the full word instead of the symbol.

    array(
        'id' => 'before-price-label-for-example-per-month',
        'label' => ' Before Price Label :',
        'type' => 'select',
        'options' => array(
            'euro' => '€',
            'usd' => '$',
        ),
    ) ,

Just make sure the first values are unique, since they are the ones being stored in the database. The second values are just labels, so you could say '$euro; - Euro' and '$ - US Dollar' or something to that effect.

I’m a little unsure how this is being used on the front side based on your code, but if you need help with that, please amend your question.

Related Posts:

  1. Is ‘# -*- coding: utf-8 -*-‘ also a comment in Python?
  2. What is the difference between UTF-8 and Unicode?
  3. Byte and char conversion in Java
  4. What is “=C2=A0” in MIME encoded, quoted-printable text?
  5. Strange characters – despite everything being UTF-8
  6. One for the gurus: upgrade to 3.x messed up only filenames with accented chars
  7. Word press replacing unicode characters with “?”s
  8. How to set charset for wp_remote_post request?
  9. Outputting post title without encoding
  10. Apostrophes showing up as ΓÇÖ after converting from Windows to Linux
  11. WordPress content shows this character ​​
  12. Symbols such as £ end up being  in the database
  13. Fix encoding ’ [closed]
  14. How to deal with apostrophes
  15. Question mark on special chars
  16. Encoding Issue while using French in WordPress
  17. Get ?? for unicode characters
  18. WordPress theme character encoding issue
  19. character encoding problem in custom template
  20. restored old database now some characters have changed?
  21. WordPress plugin problem with encoding
  22. Post removes any text from post that’s following special characters
  23. UTF-8 Characters in URL – IE problem
  24. WordPress Dashboard Characters Messed Up
  25. How to make sure the letters ‘pez’ do not convert to a fish symbol? [closed]
  26. Problem some Persian texts show in ISO-8859-5
  27. HTML encoding issues – “” character showing up instead of ” “
  28. hashlib.md5() TypeError: Unicode-objects must be encoded before hashing
  29. Converting string to byte array in C#
  30. Does “\d” in regex mean a digit?
  31. Where does this come from: -*- coding: utf-8 -*-
  32. how to convert negative hexadecimal to decimal
  33. python encoding utf-8
  34. The origin on why ‘%20’ is used as a space in URLs
  35. Using unicode character u201c
  36. Python decoding Unicode is not supported
  37. C# Encoding a text string with line breaks
  38. Random Question Mark Icons In WordPress Text
  39. Encode text string being appended as query to URL [closed]
  40. Truncating custom fields
  41. How to stop WordPress using utf8mb4_unicode_520_ci collation?
  42. Syntax error, unexpected ‘class’ (T_CLASS) on line 1 after upgrade to php 5.6.4
  43. Character encoding issue after changing servers
  44. How can I stop TinyMCE from converting my HTML entities to characters?
  45. WordPress Database Charset/Collate
  46. do_settings_sections() doesn’t escape quotes
  47. Remove “Category Archives: title” at the top of a category page [duplicate]
  48. How to write Hebrew characters?
  49. What is wp_check_invalid_utf8?
  50. WordPress load-scripts.php encoding issue
  51. Text cut off on save
  52. Strange characters on wordpress site – Not UTF8 Issue
  53. How to diagnose and keep in check encoding issues?
  54. Unexpected = (equal sign) characters in wp mail
  55. Website dumps encoded result
  56. How do I change database charset when using `wpdb`
  57. Why does wp_redirect strip out %0A (url encoded new line character) and how do I make it stop?
  58. TinyMCE as comment editor – encoding issues
  59. HTML Entities displaying improperly as malformed escaped code
  60. Post Content, Special Characters and Filters
  61. Non latin post slug truncate
  62. Is sanitize_title_with_dashes formatting function too liberal (in terms of accepted characters)?
  63. images not showing after transfer
  64. Unicode characters displaying as ? after import using WP Clone
  65. How to use Japanese characters for a single page
  66. How do I convert a MySQL database from utf8mb4 to utf8 encoding?
  67. Special Character Appearing in my WordPress Pages Content
  68. encoded search terms with %20
  69. UTF-32be error WordPress
  70. How to distinguish between a hack and an encoding error?
  71. Uploaded image with non-english characters is named incorrectly in upload folder
  72. wp_mail encode ’ in ’ in subject
  73. Email Obfuscation: Is antispambot() Acceptable? [closed]
  74. WordPress site stopped working after simply opening header.php in the wp-admin editor
  75. ✓ Checkmark Character Encoding Issue In WordPress Editor
  76. How to Fix Mangled Thai Characters
  77. Encode URL for WhatsApp “click to chat” without loosing accented characters
  78. Encoding matter – ? instead of € after settings field callback
  79. Issue with json decode in WordPress – value is not returning consistently
  80. WordPress Dutch characters encoding problem
  81. Encoding video without exec function
  82. How Can I Concatenate A String With One Of My Custom Field Value Before Saving The Post?
  83. How are cookie values encoded?
  84. How to encode correclty an url with the char “&” for an email?
  85. Rest API encoding of double quotes
  86. How can I automatically add a post with Latin characters?
  87. Migrating a WordPress site has broken UTF8 encoding
  88. All of my wordpress sites showing †Ù¥
  89. TinyMCE HTML Encode Backslash
  90. wp-login.php ampersand in url results in 404
  91. Special characters showing in fallback font
  92. WordPress Database Charset/Collate
  93. How to pass post title (which could include &) to Gravity Form
  94. wp_insert_post and title not utf8 inserts with empty title?
  95. Non english charcters support for WP Customer Reviews
  96. Language selection for blog doesn’t exist?
  97. Modify WordPress to not replace + (plus) characters from URLs?
  98. js code not stored in database currectly
  99. WordPress v3.1 Has Character Encoding Issue With Title/Permalink?
  100. wordpress shortcode url decode non Latin character
error code: 523