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How to Use WordPress do_shortcode

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WordPress is a versatile platform, offering features to help you create and manage your website effectively. One of these powerful features is the do_shortcode function. If you’re not familiar with it, this function allows you to execute shortcodes within your content, making it easier to embed dynamic elements into your posts and pages. In this blog, we’ll dive deep into the world of do_shortcode and explore how to make the most of it in your WordPress site.

Understanding Shortcodes

Before delving into do_shortcode, let’s grasp the concept of shortcodes. Shortcodes are small pieces of code enclosed in square brackets, like [shortcode]. They serve as placeholders that WordPress replaces with dynamic content when rendering your posts or pages. This dynamic content can be anything from images and videos to complex forms and custom widgets.

The Power of do_shortcode

The do_shortcode function is a powerful tool to have in your WordPress toolkit. It allows you to execute shortcodes within your posts, pages, widgets, or even theme templates. The primary use cases for do_shortcode include:

  • Embedding Shortcodes: You can use do_shortcode to embed shortcodes within your content. For example, if you have a shortcode for a contact form, you can use do_shortcode to insert it directly into your page.
  • Dynamically Generate Content: With do_shortcode, you can create dynamic content based on user input. For instance, you can use it to display user-specific information or personalized greetings.
  • Custom Template Development: Developers can use this to include shortcodes in custom templates or theme files, making the design more interactive.

Basic Usage of do_shortcode

Using do_shortcode is straightforward. You simply need to pass the shortcode as a parameter to the function. Here’s a basic example:

<?php
$content = "[your_shortcode_here]";
echo do_shortcode($content);
?>

Replace [your_shortcode_here] with the actual shortcode you want to execute. This code will output the result of the shortcode, replacing [your_shortcode_here] with the shortcode’s output.

Advanced do_shortcode Techniques

  • Nesting Shortcodes: You can nest shortcodes within one another, creating complex content structures. Just make sure the inner shortcode doesn’t conflict with the outer one.
  • Passing Parameters: Some shortcodes accept parameters for customization. You can pass these parameters to do_shortcode an associative array. For example:
$content = "[your_shortcode_with_parameters param1='value1' param2='value2']";
echo do_shortcode($content);
  • Conditionally Execute Shortcodes: You can use conditional statements to decide when and where to execute shortcodes. This allows for dynamic content generation based on specific criteria.
  • Using in Theme Files: Developers can include do_shortcode in their theme templates to create highly customizable and interactive designs. This can be particularly useful for adding shortcodes in header and footer sections.

In conclusion, WordPress’ do_shortcode empowers you to create dynamic, interactive content on your website. Whether you’re a beginner or an experienced developer, understanding how to use do_shortcode effectively can enhance your site’s functionality and user experience.

wordpress-fatal-error increase php memory

How to Increase PHP Memory and the Maximum Upload Limit

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Dealing with Fatal Errors in WordPress happens to everyone eventually. If you have a multimedia-rich site, then the standard configuration for WordPress will not meet your needs and at some point, you will experience one of the following errors: “Fatal error: The allowed memory size of xxxxxx bytes exhausted” and “filename.jpg exceeds the maximum upload size for this site.”

There are some solutions given for the Fatal Error. Try to follow the steps and hope that you can solve your problem.

1. Edit your wp-config.php file: 

wp-config.php is one of the most important WordPress files because it contains your base configuration details. You’ll find it in the root of your WordPress file directory. To edit the memory limit and upload limit, look for this line:

define(‘WP_MEMORY_LIMIT’, ’32M’);

Modify the second parameter by increasing it. As a PHP memory limit of 128M should be more than enough.

define(‘WP_MEMORY_LIMIT’, ‘128M’);

 

Save the file and you’re done. You may need to increase it again if you’re still getting the fatal error, but don’t go overboard or you may crash your server.

If you’re still having the memory limit fatal error in the admin area of WordPress, then you’ll need to modify a different line in your wp-config.php file. To increase the WP memory limit for the administration area look for this line and increase it:

define( ‘WP_MAX_MEMORY_LIMIT’, ‘256M’ );

 

Admin tasks require more memory, so you’ll need to set it much higher. Double the number you set for WP_Memory_Limit.

2. Edit your php.ini file:

In the event that modifying your wp-config.php file doesn’t address the problem, you’ll have to address the issue within your server settings instead of within WordPress.

If you’re using shared hosting, you will not be able to access your php.ini file, so see the next option instead. If you do have access to php.ini, you’ll most likely find it in the root folder, but the location of the file will vary by host.

To increase the PHP memory limit and upload limit, change these lines in php.ini

memory_limit = 256M
upload_max_filesize = 12M
post_max_size = 13M
file_uploads = On
max_execution_time = 180

 

Changing the value of max_execution_time will limit the amount of time for a PHP script to run. If the PHP script exceeds the set value (seconds), it will stop the script and report an error.

In many cases, the values you enter should get larger as you go down the list from lines one to three. The upload_max_filesize should be the smallest while the memory_limit should be the largest. The median should be post_max_size. Before checking to see if the error is gone, make sure to clear your browser’s cache.

3. Edit your .htaccess file:

If you don’t have access to php.ini, then your last resort is to modify your .htaccess file. Your .htaccess file starts with a dot because it is a hidden file. If you don’t see it in your root folder, check to make sure that your file manager isn’t keeping those files hidden from view.

To increase the PHP memory, you’ll add the following to your .htaccess file:

php_value memory_limit 256M
php_value upload_max_filesize 12M
php_value post_max_size 13M

If the PHP value memory limit has already been set, then increase it.

 

 

regex-custom-field regular expression

Common regular expression that can be used in custom fields

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What is Regular Expression (RegEx)?

Regular expressions are sequences of characters that are used to match a certain pattern in a String. However, most of the programming languages provide options to handle regular expressions or commonly called RegEx or regular expression. Besides, it is generally used for finding a part of a string or to validate the input string.

Commonly used RegEx patterns :

Many times we find ourselves trying to find the right RegEx to match the pattern that is required. So, here we will describe about some regular expressions that are most commonly used in our custom field.

1. Password strength validation :

We generally estimate the strength of a Password based on the numeric’s, symbols, and Uppercase alphabets. Regular Expression for strict password validation:

^(?=.*\d)(?=.*[A-Z])(?=.*[a-z])(?=.*[^\w\d\s:])([^\s]){8,16}$

This checks if the string contains one lowercase alphabet, one uppercase alphabet, one number, a symbol, and no space.

2. Email validation :

Validating email is a critical point while validating an HTML form. Since an email is a string that is separated into two parts by @ symbol. A “personal_info” and a domain, that is personal_info@domain. So, the length of the personal_info part may be up to 64 characters long and the domain name may be up to 253 characters. A regular expression for valid email :

^([a-z0-9]+(?:[._-][a-z0-9]+)*)@([a-z0-9]+(?:[.-][a-z0-9]+)*\.[a-z]{2,})$

The personal_info part contains lowercase letters, digits, and characters. The domain name [for example com, org, net, in, us, info] part contains letters, digits, hyphens, and dots as well.

3. URL validation :

URL regex validation is the best way to check if a string is a valid URL or not. Just pass the Regex in the match method to validate the URL.

https?:\/\/(www\.)?[-a-zA-Z0–9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0–9@:%_\+.~#()?&//=]*)

Moreover, the expression checks if the URL starts with HTTP or HTTPS, the symbol://, www. ,  subdomain of length (2, 256), and Domain.

4. Phone number validation :

Phone numbers look different depending on which part of the world you are from. The most common format is:

^([+]?\d{1,3}[-\s]?|)\d{3}[-\s]?\d{3}[-\s]?\d{4}$

The first half of the following expression checks the country code and the other half checks the 10 digits after that.

5. IP address validation :

IP addresses are used on the Internet to identify components connected to a network. Since most computers still use IPv4 addresses. To match an IPv4 IP address:

^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$

The following expression checks if the IP address consists of 32-bit numeric addresses or not. It is written as four decimal numbers (called octets) separated by periods and each number can be written as 0 to 255.

 

why go for user meta pro

Why you should go for User Meta Pro

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If you are looking for User Management Plugin, User Meta is the best plugin to go for. Since, it is a versatile user profile builder and user management plugin that you will find all the features in a single platform. Followings are some key points why you should go for this solution.

Work with Any Theme
User Meta works with any WordPress theme. So, if you’re using a theme from WordPress or even if you’re using a custom theme it will work great for you.

Quick Setup
The plugin is quick and easy to set up and running. Our no-code, drag and drop plugin allows you to start creating and customizing user login and profile pages within minutes as well. Besides, the supports that might be needed for a user, are provided on our website.

Fast & Simple Customization Tools
One of the easiest things you can accomplish with this plugin is customizing your form with some simple clicks because it has all the fields that are needed. However, if you want to customize your form with some styles, you can simply go to the Advance option.

Powerful Access Rules
Restrict Content add-on will help you to tailor all the users’ permission to see your content (pages/posts etc.). Moreover, you can moderate and censor your posts for different roles . And if you want to keep your premium content away from prying eyes, then you can set some of your content available only for your logged-in users too.

Regular Updates and Bug Fixes
On the Change Log page, you can see the versions and as well as the features of our plugin that are newly added or after fixing some bugs .

Ready to Translate
It has an add-on WPML Integration that allows translations of complete User Meta Pro plugin’s generated texts. It translates page ids like login, registration, and profile page. Available translations are German, French, Italian, Dutch, Russian, Spanish, Chinese, Czech and Turkish.

Email Notification
You can customize the format of the emails that will be sent from your WordPress site. It also verifies email on registration and sends email(s) after registering and updating. You can also customize lost passwords, email verification, user activation or deactivation email.

Google Security Captcha
It allows you to implement a Google security captcha into forms like registration and login forms. Re-Captcha protects your site against spam, malicious registrations and other forms of attacks where computers try to disguise themselves as a human.

Export/Import User
You will have the option to save your user data as exported CSV files and can import users on our pro version. Even you can also choose fields that you want to export. You can design your CSV file with some easy drag and drop.

Website Security
User Meta Pro allows users to register on your WordPress site without accessing the admin area. It enables fast and seamless user login without compromising the security of your website.

Developer Friendly
If you are a tinkerer, we’ve got you covered. Our code is clean and fully commented with a number of hooks and filters for extending the plugin. You can also find a Developer guide on our website..

Professional Support Team
We have an efficient dedicated support team available for your assistance. We are available via email, forum and contact form to provide you with the best support. If you face any problem, you can also write your problem in our Support Forum section. We will try to reach you and solve your problem as soon as possible.

Extensive Documentation
We provide all the documentation for every single step that you need. In addition, we also have Video documentation.