doublesharp

<h4>Validated Field Add-On</h4>
The Validated Field add-on for <a href="https://wordpress.org/extend/plugins/advanced-custom-fields/" rel="ugc">Advanced Custom Fields</a> 
provides a wrapper for other input types which allows you to provide client side input masking using the jQuery 
<a href="http://digitalbush.com/projects/masked-input-plugin/" rel="nofollow ugc">Masked Input Plugin</a>, server side validation using either PHP regular expressions 
or PHP code, the option of ensuring a field’s uniqueness for all posts by <code>post_type</code> and <code>meta_key</code>, <code>post_type</code>, or site wide, or a 
single post by meta_key, as well as marking a field as read-only. Edit your fields in the ACF Field Group editor and update code using the ACE.js 
IDE with autocomplete and syntax validation.
<h4>Features</h4>
<ol>
<li>Input Masking – easily set masks on text inputs to ensure data is properly formatted.</li>
<li>Server-Side Validation – validate the inputs using server side PHP code or regular expressions.</li>
<li>Uniqueness – ensure that the value being updated is not already in use.</li>
<li>Repeater Fields – validated fields within a <a href="http://www.advancedcustomfields.com/add-ons/repeater-field/" rel="nofollow ugc">Repeater Field</a>.</li>
<li>Read Only – specify a field as read-only allowing it to be displayed but not updated.</li>
<li>WordPress Multi Language – compatible with multilingual sites using the WPML plugin.</li>
<li>Conditional Logic – show and hide validated fields based on the values of other “switch” fields.</li>
</ol>
<h4>Compatibility</h4>
Requires <a href="https://wordpress.org/extend/plugins/advanced-custom-fields/" rel="ugc">Advanced Custom Fields</a> version 4.0 or greater.

Advanced Custom Fields: Validated Field

Adding my one star to inform people that this plugin is no longer working

Doesn't work in ACF Pro 5.6.2

The Validated Field add-on for Advanced Custom Fields provides input masking and server-side validation of other field types.

Nick Lugovskoy

HTML Regex Replace use find&replace mechanism based on regexp 
for your posts/pages. Plugin finds html or text using regular 
expressions and replaces it with predefined ‘New string’. 
Unlimited replacement rules. You can specify any amount of short codes, and no buttons!
For example:
<pre><code>(c) -> Copyright
[me] -> My Full Name
</code></pre>
Short code ‘(c)’ will be replaced with ‘Copyright’ and ‘[me]’ with ‘My Full Name’.
More than that you can fix html code or remove unwanted automatically inserted html 
(for example, chrome-auto-translate-plugin-dialog inserted by Auto-Translate 
chrome plugin).
<h4>Support Forum</h4>
Please use plugin support blog <a href="http://wp-regrep.blogspot.com/" title="HTML Regex Replace blog" rel="nofollow ugc">HERE</a> 
for help.

HTML Regex Replace

Replace any html you write in editor (Visual or HTML) with pre-defined string. Use Regexp to define patterns for replacement.

Advanced Custom Fields: Validated Field vs HTML Regex Replace