How To Guides on Programming and Web Development - CodexWorld

The default image is used as a profile picture when a user signs up on the website. This default image is displayed as a profile picture until the user changes their profile picture. Generally, the same image is used as a default profile picture for all users. If you want to separate the default image for each user, it needs to be changed dynamically. In this code snippet, we will show you how to create a default profile image dynamically from the first and last names in PHP.

Use array_unique() function to remove duplicate values from an array in PHP. You can remove duplicate values with case/space insensitively from an array using PHP array_map() function. Remove space from all strings in an array using the trim callback method with the array_map() function. Convert array values to lowercase using the strtolower callback method with the array_map() function.

jQuery UI Slider plugin provides an easy way to convert an HTML element into a slider. The user can select a numeric value with jQuery UI slider handle. The value can be selected by dragging the slider handle or moving the mouse or arrow keys. There are various options are available to integrate single or range sliders using jQuery UI. We can set custom step values in jQuery UI Slider and make dynamic steps.

When a text input field is used to attach a datepicker, the user can clear the selected value in the input field. But, if a non-editable HTML element or read-only input field is used, the selected datepicker value is not possible to clear manually. Use the onClose event of the datepicker() object to add a reset button in jQuery UI datepicker and clear the selected value.

Generally, the HTML form is submitted to the script URL specified in the action attribute of the form tag. You can also handle the form submission process using jQuery. The jQuery submit() method is very useful to handle the form submission process. In this example code snippet, we will show you how to submit an HTML form via Ajax using jQuery.

Use the diff() method of the DateTime class to create a DateInterval object that calculates the difference between two date/time objects in time using PHP. The PHP strtotime() function can be used to get the time difference between two dates (DateTimes) in minutes. example code snippet helps to you get the difference in minutes between two dates with PHP.

The Microsoft SQL Server Drivers for PHP allow you to integrate and connect with the SQL server in the PHP applications. Follow the step-by-step guide to install SQL server PHP driver in PHP and enable PDO support for PHP. Download SQL Server Driver for PHP and place the dll library file in the PHP extension directory.

The order of an array elements can sort by key using foreach() loop, but it will be a complicated process, and execution time is high. PHP array_multisort() function provides an easy way to sort a multidimensional array by key value. Use array_column() and array_multisort() function to sort multi-dimensional arrays by key in PHP.

The string used for an API key or token should be unique and secure. PHP random_bytes() function generates pseudo-random bytes that are cryptographically secure. Use random_bytes() and bin2hex() function to generate unique and strong API keys in PHP. Example code to create a random and secure string with PHP which is useful for API key/token.